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Theorem List for Metamath Proof Explorer - 34901-35000   *Has distinct variable group(s)
TypeLabelDescription
Statement

Theoremcdlemg2klem 34901* cdleme42keg 34792 with simpler hypotheses. TODO: FIX COMMENT. (Contributed by NM, 22-Apr-2013.)
𝐵 = (Base‘𝐾)    &    = (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑈 = ((𝑝 𝑞) 𝑊)    &   𝐷 = ((𝑡 𝑈) (𝑞 ((𝑝 𝑡) 𝑊)))    &   𝐸 = ((𝑝 𝑞) (𝐷 ((𝑠 𝑡) 𝑊)))    &   𝐺 = (𝑥𝐵 ↦ if((𝑝𝑞 ∧ ¬ 𝑥 𝑊), (𝑧𝐵𝑠𝐴 ((¬ 𝑠 𝑊 ∧ (𝑠 (𝑥 𝑊)) = 𝑥) → 𝑧 = (if(𝑠 (𝑝 𝑞), (𝑦𝐵𝑡𝐴 ((¬ 𝑡 𝑊 ∧ ¬ 𝑡 (𝑝 𝑞)) → 𝑦 = 𝐸)), 𝑠 / 𝑡𝐷) (𝑥 𝑊)))), 𝑥))    &   𝑉 = ((𝑃 𝑄) 𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ 𝐹𝑇) → ((𝐹𝑃) (𝐹𝑄)) = ((𝐹𝑃) 𝑉))

Theoremcdlemg2idN 34902 Version of cdleme31id 34700 with simpler hypotheses. TODO: Fix comment. (Contributed by NM, 21-Apr-2013.) (New usage is discouraged.)
= (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝐵 = (Base‘𝐾)       ((((𝐾 ∈ HL ∧ 𝑊𝐻𝐹𝑇) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ ((𝐹𝑃) = 𝑄𝑋𝐵) ∧ 𝑃 = 𝑄) → (𝐹𝑋) = 𝑋)

Theoremcdlemg3a 34903 Part of proof of Lemma G in [Crawley] p. 116, line 19. Show p q = p u. TODO: reformat cdleme0cp 34519 to match this, then replace with cdleme0cp 34519. (Contributed by NM, 19-Apr-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑈 = ((𝑃 𝑄) 𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ 𝑄𝐴) → (𝑃 𝑄) = (𝑃 𝑈))

Theoremcdlemg2jOLDN 34904 TODO: Replace this with ltrnj 34436. (Contributed by NM, 22-Apr-2013.) (New usage is discouraged.)
𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &    = (le‘𝐾)    &    = (join‘𝐾)    &   𝐴 = (Atoms‘𝐾)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ 𝐹𝑇) → (𝐹‘(𝑃 𝑄)) = ((𝐹𝑃) (𝐹𝑄)))

Theoremcdlemg2fv 34905 Value of a translation in terms of an associated atom. cdleme48fvg 34806 with simpler hypotheses. TODO: Use ltrnj 34436 to vastly simplify. (Contributed by NM, 23-Apr-2013.)
𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &    = (le‘𝐾)    &    = (join‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &    = (meet‘𝐾)    &   𝐵 = (Base‘𝐾)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑋𝐵 ∧ ¬ 𝑋 𝑊)) ∧ (𝐹𝑇 ∧ (𝑃 (𝑋 𝑊)) = 𝑋)) → (𝐹𝑋) = ((𝐹𝑃) (𝑋 𝑊)))

Theoremcdlemg2fv2 34906 Value of a translation in terms of an associated atom. TODO: FIX COMMENT. TODO: Is this useful elsewhere e.g. around cdlemeg46fjv 34829 that use more complex proofs? TODO: Use ltrnj 34436 to vastly simplify. (Contributed by NM, 23-Apr-2013.)
𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &    = (le‘𝐾)    &    = (join‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &    = (meet‘𝐾)    &   𝑈 = ((𝑃 𝑄) 𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊)) ∧ 𝐹𝑇) → (𝐹‘(𝑅 𝑈)) = ((𝐹𝑅) 𝑈))

Theoremcdlemg2k 34907 cdleme42keg 34792 with simpler hypotheses. TODO: FIX COMMENT. TODO: derive from cdlemg3a 34903, cdlemg2fv2 34906, cdlemg2jOLDN 34904, ltrnel 34443? (Contributed by NM, 22-Apr-2013.)
𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &    = (le‘𝐾)    &    = (join‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &    = (meet‘𝐾)    &   𝑈 = ((𝑃 𝑄) 𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ 𝐹𝑇) → ((𝐹𝑃) (𝐹𝑄)) = ((𝐹𝑃) 𝑈))

Theoremcdlemg2kq 34908 cdlemg2k 34907 with 𝑃 and 𝑄 swapped. TODO: FIX COMMENT. (Contributed by NM, 15-May-2013.)
𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &    = (le‘𝐾)    &    = (join‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &    = (meet‘𝐾)    &   𝑈 = ((𝑃 𝑄) 𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ 𝐹𝑇) → ((𝐹𝑃) (𝐹𝑄)) = ((𝐹𝑄) 𝑈))

Theoremcdlemg2l 34909 TODO: FIX COMMENT. (Contributed by NM, 23-Apr-2013.)
𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &    = (le‘𝐾)    &    = (join‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &    = (meet‘𝐾)    &   𝑈 = ((𝑃 𝑄) 𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇)) → ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) = ((𝐹‘(𝐺𝑃)) 𝑈))

Theoremcdlemg2m 34910 TODO: FIX COMMENT. (Contributed by NM, 25-Apr-2013.)
𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &    = (le‘𝐾)    &    = (join‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &    = (meet‘𝐾)    &   𝑈 = ((𝑃 𝑄) 𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ 𝐹𝑇) → (((𝐹𝑃) (𝐹𝑄)) 𝑊) = 𝑈)

Theoremcdlemg5 34911* TODO: Is there a simpler more direct proof, that could be placed earlier e.g. near lhpexle 34309? TODO: The hypothesis is unused. FIX COMMENT. (Contributed by NM, 26-Apr-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊)) → ∃𝑞𝐴 (𝑃𝑞 ∧ ¬ 𝑞 𝑊))

Theoremcdlemb3 34912* Given two atoms not under the fiducial co-atom 𝑊, there is a third. Lemma B in [Crawley] p. 112. TODO: Is there a simpler more direct proof, that could be placed earlier e.g. near lhpexle 34309? Then replace cdlemb2 34345 with it. This is a more general version of cdlemb2 34345 without 𝑃𝑄 condition. (Contributed by NM, 27-Apr-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) → ∃𝑟𝐴𝑟 𝑊 ∧ ¬ 𝑟 (𝑃 𝑄)))

Theoremcdlemg7fvbwN 34913 Properties of a translation of an element not under 𝑊. TODO: Fix comment. Can this be simplified? Perhaps derived from cdleme48bw 34808? Done with a *ltrn* theorem? (Contributed by NM, 28-Apr-2013.) (New usage is discouraged.)
= (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝐵 = (Base‘𝐾)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑋𝐵 ∧ ¬ 𝑋 𝑊) ∧ 𝐹𝑇) → ((𝐹𝑋) ∈ 𝐵 ∧ ¬ (𝐹𝑋) 𝑊))

Theoremcdlemg4a 34914 TODO: FIX COMMENT If fg(p) = p, then tr f = tr g. (Contributed by NM, 23-Apr-2013.)
= (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ 𝐹𝑇𝐺𝑇) ∧ (𝐹‘(𝐺𝑃)) = 𝑃) → (𝑅𝐹) = (𝑅𝐺))

Theoremcdlemg4b1 34915 TODO: FIX COMMENT. (Contributed by NM, 24-Apr-2013.)
= (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)    &    = (join‘𝐾)    &   𝑉 = (𝑅𝐺)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ 𝐺𝑇) → (𝑃 𝑉) = (𝑃 (𝐺𝑃)))

Theoremcdlemg4b2 34916 TODO: FIX COMMENT. (Contributed by NM, 24-Apr-2013.)
= (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)    &    = (join‘𝐾)    &   𝑉 = (𝑅𝐺)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ 𝐺𝑇) → ((𝐺𝑃) 𝑉) = (𝑃 (𝐺𝑃)))

Theoremcdlemg4b12 34917 TODO: FIX COMMENT. (Contributed by NM, 24-Apr-2013.)
= (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)    &    = (join‘𝐾)    &   𝑉 = (𝑅𝐺)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ 𝐺𝑇) → ((𝐺𝑃) 𝑉) = (𝑃 𝑉))

Theoremcdlemg4c 34918 TODO: FIX COMMENT. (Contributed by NM, 24-Apr-2013.)
= (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)    &    = (join‘𝐾)    &   𝑉 = (𝑅𝐺)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐺𝑇) ∧ ¬ 𝑄 (𝑃 𝑉)) → ¬ (𝐺𝑄) (𝑃 𝑉))

Theoremcdlemg4d 34919 TODO: FIX COMMENT. (Contributed by NM, 25-Apr-2013.)
= (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)    &    = (join‘𝐾)    &   𝑉 = (𝑅𝐺)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇 ∧ ¬ 𝑄 (𝑃 𝑉) ∧ (𝐹‘(𝐺𝑃)) = 𝑃)) → ¬ (𝐺𝑄) ((𝐺𝑃) (𝐹‘(𝐺𝑃))))

Theoremcdlemg4e 34920 TODO: FIX COMMENT. (Contributed by NM, 25-Apr-2013.)
= (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)    &    = (join‘𝐾)    &   𝑉 = (𝑅𝐺)    &    = (meet‘𝐾)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇 ∧ ¬ 𝑄 (𝑃 𝑉) ∧ (𝐹‘(𝐺𝑃)) = 𝑃)) → (𝐹‘(𝐺𝑄)) = (((𝐺𝑄) (𝑅𝐹)) ((𝐹‘(𝐺𝑃)) (((𝐺𝑃) (𝐺𝑄)) 𝑊))))

Theoremcdlemg4f 34921 TODO: FIX COMMENT. (Contributed by NM, 25-Apr-2013.)
= (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)    &    = (join‘𝐾)    &   𝑉 = (𝑅𝐺)    &    = (meet‘𝐾)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇 ∧ ¬ 𝑄 (𝑃 𝑉) ∧ (𝐹‘(𝐺𝑃)) = 𝑃)) → (𝐹‘(𝐺𝑄)) = ((𝑄 𝑉) (𝑃 ((𝑃 𝑄) 𝑊))))

Theoremcdlemg4g 34922 TODO: FIX COMMENT. (Contributed by NM, 25-Apr-2013.)
= (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)    &    = (join‘𝐾)    &   𝑉 = (𝑅𝐺)    &    = (meet‘𝐾)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇 ∧ ¬ 𝑄 (𝑃 𝑉) ∧ (𝐹‘(𝐺𝑃)) = 𝑃)) → (𝐹‘(𝐺𝑄)) = ((𝑄 𝑉) (𝑃 𝑄)))

Theoremcdlemg4 34923 TODO: FIX COMMENT. (Contributed by NM, 25-Apr-2013.)
= (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)    &    = (join‘𝐾)    &   𝑉 = (𝑅𝐺)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇 ∧ ¬ 𝑄 (𝑃 𝑉) ∧ (𝐹‘(𝐺𝑃)) = 𝑃)) → (𝐹‘(𝐺𝑄)) = 𝑄)

Theoremcdlemg6a 34924* TODO: FIX COMMENT. TODO: replace with cdlemg4 34923. (Contributed by NM, 27-Apr-2013.)
= (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)    &    = (join‘𝐾)    &   𝑉 = (𝑅𝐺)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑟𝐴 ∧ ¬ 𝑟 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇 ∧ ¬ 𝑟 (𝑃 𝑉) ∧ (𝐹‘(𝐺𝑃)) = 𝑃)) → (𝐹‘(𝐺𝑟)) = 𝑟)

Theoremcdlemg6b 34925* TODO: FIX COMMENT. TODO: replace with cdlemg4 34923. (Contributed by NM, 27-Apr-2013.)
= (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)    &    = (join‘𝐾)    &   𝑉 = (𝑅𝐺)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑟𝐴 ∧ ¬ 𝑟 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇 ∧ ¬ 𝑄 (𝑟 𝑉) ∧ (𝐹‘(𝐺𝑟)) = 𝑟)) → (𝐹‘(𝐺𝑄)) = 𝑄)

Theoremcdlemg6c 34926* TODO: FIX COMMENT. (Contributed by NM, 27-Apr-2013.)
= (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)    &    = (join‘𝐾)    &   𝑉 = (𝑅𝐺)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇𝑄 (𝑃 𝑉) ∧ (𝐹‘(𝐺𝑃)) = 𝑃)) → (((𝑟𝐴 ∧ ¬ 𝑟 𝑊) ∧ ¬ 𝑟 (𝑃 𝑉)) → (𝐹‘(𝐺𝑄)) = 𝑄))

Theoremcdlemg6d 34927* TODO: FIX COMMENT. (Contributed by NM, 27-Apr-2013.)
= (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)    &    = (join‘𝐾)    &   𝑉 = (𝑅𝐺)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇𝑄 (𝑃 𝑉) ∧ (𝐹‘(𝐺𝑃)) = 𝑃)) → (((𝑟𝐴 ∧ ¬ 𝑟 𝑊) ∧ ¬ 𝑟 (𝑃 (𝐺𝑃))) → (𝐹‘(𝐺𝑄)) = 𝑄))

Theoremcdlemg6e 34928 TODO: FIX COMMENT. (Contributed by NM, 27-Apr-2013.)
= (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)    &    = (join‘𝐾)    &   𝑉 = (𝑅𝐺)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇𝑄 (𝑃 𝑉) ∧ (𝐹‘(𝐺𝑃)) = 𝑃)) → (𝐹‘(𝐺𝑄)) = 𝑄)

Theoremcdlemg6 34929 TODO: FIX COMMENT. (Contributed by NM, 27-Apr-2013.)
= (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇 ∧ (𝐹‘(𝐺𝑃)) = 𝑃)) → (𝐹‘(𝐺𝑄)) = 𝑄)

Theoremcdlemg7fvN 34930 Value of a translation composition in terms of an associated atom. (Contributed by NM, 28-Apr-2013.) (New usage is discouraged.)
𝐵 = (Base‘𝐾)    &    = (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑋𝐵 ∧ ¬ 𝑋 𝑊)) ∧ (𝐹𝑇𝐺𝑇 ∧ (𝑃 (𝑋 𝑊)) = 𝑋)) → (𝐹‘(𝐺𝑋)) = ((𝐹‘(𝐺𝑃)) (𝑋 𝑊)))

Theoremcdlemg7aN 34931 TODO: FIX COMMENT. (Contributed by NM, 28-Apr-2013.) (New usage is discouraged.)
𝐵 = (Base‘𝐾)    &    = (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑋𝐵 ∧ ¬ 𝑋 𝑊)) ∧ (𝐹𝑇𝐺𝑇 ∧ (𝐹‘(𝐺𝑃)) = 𝑃)) → (𝐹‘(𝐺𝑋)) = 𝑋)

Theoremcdlemg7N 34932 TODO: FIX COMMENT. (Contributed by NM, 28-Apr-2013.) (New usage is discouraged.)
𝐵 = (Base‘𝐾)    &    = (le‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ 𝑋𝐵) ∧ (𝐹𝑇𝐺𝑇 ∧ (𝐹‘(𝐺𝑃)) = 𝑃)) → (𝐹‘(𝐺𝑋)) = 𝑋)

Theoremcdlemg8a 34933 TODO: FIX COMMENT. (Contributed by NM, 29-Apr-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇 ∧ (𝐹‘(𝐺𝑃)) = 𝑃)) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg8b 34934 TODO: FIX COMMENT. (Contributed by NM, 29-Apr-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇 ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) = (𝑃 𝑄) ∧ (𝐹‘(𝐺𝑃)) ≠ 𝑃)) → (𝑃 (𝐹‘(𝐺𝑃))) = (𝑃 𝑄))

Theoremcdlemg8c 34935 TODO: FIX COMMENT. (Contributed by NM, 29-Apr-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇 ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) = (𝑃 𝑄) ∧ (𝐹‘(𝐺𝑃)) ≠ 𝑃)) → (𝑄 (𝐹‘(𝐺𝑄))) = (𝑃 𝑄))

Theoremcdlemg8d 34936 TODO: FIX COMMENT. (Contributed by NM, 29-Apr-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇 ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) = (𝑃 𝑄) ∧ (𝐹‘(𝐺𝑃)) ≠ 𝑃)) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg8 34937 TODO: FIX COMMENT. (Contributed by NM, 29-Apr-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇 ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) = (𝑃 𝑄))) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg9a 34938 TODO: FIX COMMENT. (Contributed by NM, 1-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑈 = ((𝑃 𝑄) 𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇𝑃𝑄 ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄))) → ((𝑃 𝑈) ((𝐹‘(𝐺𝑃)) 𝑈)) ((𝐺𝑃) 𝑈))

Theoremcdlemg9b 34939 The triples 𝑃, (𝐹‘(𝐺𝑃)), (𝐹𝑃)⟩ and 𝑄, (𝐹‘(𝐺𝑄)), (𝐹𝑄)⟩ are centrally perspective. TODO: FIX COMMENT. (Contributed by NM, 1-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇𝑃𝑄 ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄))) → ((𝑃 𝑄) ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄)))) ((𝐺𝑃) (𝐺𝑄)))

Theoremcdlemg9 34940 The triples 𝑃, (𝐹‘(𝐺𝑃)), (𝐹𝑃)⟩ and 𝑄, (𝐹‘(𝐺𝑄)), (𝐹𝑄)⟩ are axially perspective by dalaw 34190. Part of Lemma G of [Crawley] p. 116, last 2 lines. TODO: FIX COMMENT. (Contributed by NM, 1-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇𝑃𝑄 ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄))) → ((𝑃 (𝐹‘(𝐺𝑃))) (𝑄 (𝐹‘(𝐺𝑄)))) ((((𝐹‘(𝐺𝑃)) (𝐺𝑃)) ((𝐹‘(𝐺𝑄)) (𝐺𝑄))) (((𝐺𝑃) 𝑃) ((𝐺𝑄) 𝑄))))

Theoremcdlemg10b 34941 TODO: FIX COMMENT. TODO: Can this be moved up as a stand-alone theorem in ltrn* area? (Contributed by NM, 4-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ 𝐹𝑇) → (((𝐹𝑃) (𝐹𝑄)) 𝑊) = ((𝑃 𝑄) 𝑊))

Theoremcdlemg10bALTN 34942 TODO: FIX COMMENT. TODO: Can this be moved up as a stand-alone theorem in ltrn* area? TODO: Compare this proof to cdlemg2m 34910 and pick best, if moved to ltrn* area. (Contributed by NM, 4-May-2013.) (New usage is discouraged.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻𝐹𝑇) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) → (((𝐹𝑃) (𝐹𝑄)) 𝑊) = ((𝑃 𝑄) 𝑊))

Theoremcdlemg11a 34943 TODO: FIX COMMENT. (Contributed by NM, 4-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇 ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄))) → (𝐹‘(𝐺𝑃)) ≠ 𝑃)

Theoremcdlemg11aq 34944 TODO: FIX COMMENT. TODO: can proof using this be restructured to use cdlemg11a 34943? (Contributed by NM, 4-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇 ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄))) → (𝐹‘(𝐺𝑄)) ≠ 𝑄)

Theoremcdlemg10c 34945 TODO: FIX COMMENT. TODO: Can this be moved up as a stand-alone theorem in trl* area? (Contributed by NM, 4-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇)) → ((𝑅𝐹) ((𝐺𝑃) (𝐺𝑄)) ↔ (𝑅𝐹) (𝑃 𝑄)))

Theoremcdlemg10a 34946 TODO: FIX COMMENT. (Contributed by NM, 3-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ (((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄) ∧ ¬ (𝑅𝐹) (𝑃 𝑄) ∧ ¬ (𝑅𝐺) (𝑃 𝑄))) → ((𝑃 (𝐹‘(𝐺𝑃))) (𝑄 (𝐹‘(𝐺𝑄)))) ((𝑅𝐹) (𝑅𝐺)))

Theoremcdlemg10 34947 TODO: FIX COMMENT. (Contributed by NM, 4-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ (((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄) ∧ ¬ (𝑅𝐹) (𝑃 𝑄) ∧ ¬ (𝑅𝐺) (𝑃 𝑄))) → ((𝑃 (𝐹‘(𝐺𝑃))) (𝑄 (𝐹‘(𝐺𝑄)))) 𝑊)

Theoremcdlemg11b 34948 TODO: FIX COMMENT. (Contributed by NM, 5-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ 𝑄𝐴) ∧ (𝐺𝑇𝑃𝑄 ∧ ¬ (𝑅𝐺) (𝑃 𝑄))) → (𝑃 𝑄) ≠ ((𝐺𝑃) (𝐺𝑄)))

Theoremcdlemg12a 34949 TODO: FIX COMMENT. (Contributed by NM, 5-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑈 = ((𝑃 𝑄) 𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇𝑃𝑄 ∧ (𝑃 𝑈) ≠ ((𝐺𝑃) 𝑈))) → ((𝑃 𝑈) ((𝐺𝑃) 𝑈)) ((𝐹‘(𝐺𝑃)) 𝑈))

Theoremcdlemg12b 34950 The triples 𝑃, (𝐹𝑃), (𝐹‘(𝐺𝑃))⟩ and 𝑄, (𝐹𝑄), (𝐹‘(𝐺𝑄))⟩ are centrally perspective. TODO: FIX COMMENT. (Contributed by NM, 5-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇𝑃𝑄 ∧ ¬ (𝑅𝐺) (𝑃 𝑄))) → ((𝑃 𝑄) ((𝐺𝑃) (𝐺𝑄))) ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))))

Theoremcdlemg12c 34951 The triples 𝑃, (𝐹𝑃), (𝐹‘(𝐺𝑃))⟩ and 𝑄, (𝐹𝑄), (𝐹‘(𝐺𝑄))⟩ are axially perspective by dalaw 34190. TODO: FIX COMMENT. (Contributed by NM, 5-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇𝑃𝑄 ∧ ¬ (𝑅𝐺) (𝑃 𝑄))) → ((𝑃 (𝐺𝑃)) (𝑄 (𝐺𝑄))) ((((𝐺𝑃) (𝐹‘(𝐺𝑃))) ((𝐺𝑄) (𝐹‘(𝐺𝑄)))) (((𝐹‘(𝐺𝑃)) 𝑃) ((𝐹‘(𝐺𝑄)) 𝑄))))

Theoremcdlemg12d 34952 TODO: FIX COMMENT. (Contributed by NM, 5-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇) ∧ (𝑃𝑄 ∧ ¬ (𝑅𝐹) (𝑃 𝑄) ∧ ¬ (𝑅𝐺) (𝑃 𝑄))) → (𝑅𝐺) ((𝑅𝐹) (((𝐹‘(𝐺𝑃)) 𝑃) ((𝐹‘(𝐺𝑄)) 𝑄))))

Theoremcdlemg12e 34953 TODO: FIX COMMENT. (Contributed by NM, 6-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)    &    0 = (0.‘𝐾)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ (¬ (𝑅𝐹) (𝑃 𝑄) ∧ ¬ (𝑅𝐺) (𝑃 𝑄) ∧ (𝑅𝐹) ≠ (𝑅𝐺))) → (((𝐹‘(𝐺𝑃)) 𝑃) ((𝐹‘(𝐺𝑄)) 𝑄)) ≠ 0 )

Theoremcdlemg12f 34954 TODO: FIX COMMENT. (Contributed by NM, 6-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ ((¬ (𝑅𝐹) (𝑃 𝑄) ∧ ¬ (𝑅𝐺) (𝑃 𝑄)) ∧ (𝑅𝐹) ≠ (𝑅𝐺) ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄))) → ((𝑃 (𝐹‘(𝐺𝑃))) (𝑄 (𝐹‘(𝐺𝑄)))) ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊))

Theoremcdlemg12g 34955 TODO: FIX COMMENT. TODO: Combine with cdlemg12f 34954. (Contributed by NM, 6-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ ((¬ (𝑅𝐹) (𝑃 𝑄) ∧ ¬ (𝑅𝐺) (𝑃 𝑄)) ∧ (𝑅𝐹) ≠ (𝑅𝐺) ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄))) → ((𝑃 (𝐹‘(𝐺𝑃))) (𝑄 (𝐹‘(𝐺𝑄)))) = ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊))

Theoremcdlemg12 34956 TODO: FIX COMMENT. (Contributed by NM, 6-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ ((¬ (𝑅𝐹) (𝑃 𝑄) ∧ ¬ (𝑅𝐺) (𝑃 𝑄)) ∧ (𝑅𝐹) ≠ (𝑅𝐺) ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄))) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg13a 34957 TODO: FIX COMMENT. (Contributed by NM, 6-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇) ∧ ((𝐹𝑃) ≠ 𝑃 ∧ (𝑅𝐹) = (𝑅𝐺) ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄))) → (𝑃 (𝐹‘(𝐺𝑃))) = ((𝐺𝑃) (𝐹‘(𝐺𝑃))))

Theoremcdlemg13 34958 TODO: FIX COMMENT. (Contributed by NM, 6-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇) ∧ ((𝐹𝑃) ≠ 𝑃 ∧ (𝑅𝐹) = (𝑅𝐺) ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄))) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg14f 34959 TODO: FIX COMMENT. (Contributed by NM, 6-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇 ∧ (𝐹𝑃) = 𝑃)) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg14g 34960 TODO: FIX COMMENT. (Contributed by NM, 22-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇 ∧ (𝐺𝑃) = 𝑃)) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg15a 34961 Eliminate the (𝐹𝑃) ≠ 𝑃 condition from cdlemg13 34958. TODO: FIX COMMENT. (Contributed by NM, 6-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇) ∧ ((𝑅𝐹) = (𝑅𝐺) ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄))) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg15 34962 Eliminate the ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄) condition from cdlemg13 34958. TODO: FIX COMMENT. (Contributed by NM, 25-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇) ∧ (𝑅𝐹) = (𝑅𝐺)) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg16 34963 Part of proof of Lemma G of [Crawley] p. 116; 2nd line p. 117, which says that (our) cdlemg10 34947 "implies (2)" (of p. 116). No details are provided by the authors, so there may be a shorter proof; but ours requires the 14 lemmas, one using Desargues' law dalaw 34190, in order to make this inference. This final step eliminates the (𝑅𝐹) ≠ (𝑅𝐺) condition from cdlemg12 34956. TODO: FIX COMMENT. TODO: should we also eliminate 𝑃𝑄 here (or earlier)? Do it if we don't need to add it in for something else later. (Contributed by NM, 6-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ (¬ (𝑅𝐹) (𝑃 𝑄) ∧ ¬ (𝑅𝐺) (𝑃 𝑄) ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄))) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg16ALTN 34964 This version of cdlemg16 34963 uses cdlemg15a 34961 instead of cdlemg15 34962, in case cdlemg15 34962 ends up not being needed. TODO: FIX COMMENT. (Contributed by NM, 6-May-2013.) (New usage is discouraged.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻 ∧ (𝐹𝑇𝐺𝑇)) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝑃𝑄) ∧ (((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄) ∧ ¬ (𝑅𝐹) (𝑃 𝑄) ∧ ¬ (𝑅𝐺) (𝑃 𝑄))) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg16z 34965 Eliminate ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄) condition from cdlemg16 34963. TODO: would it help to also eliminate 𝑃𝑄 here or later? (Contributed by NM, 25-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ (¬ (𝑅𝐹) (𝑃 𝑄) ∧ ¬ (𝑅𝐺) (𝑃 𝑄))) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg16zz 34966 Eliminate 𝑃𝑄 from cdlemg16z 34965. TODO: Use this only if needed. (Contributed by NM, 26-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇 ∧ ¬ (𝑅𝐹) (𝑃 𝑄) ∧ ¬ (𝑅𝐺) (𝑃 𝑄))) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg17a 34967 TODO: FIX COMMENT. (Contributed by NM, 8-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐺𝑇 ∧ (𝑅𝐺) (𝑃 𝑄))) → (𝐺𝑃) (𝑃 𝑄))

Theoremcdlemg17b 34968* Part of proof of Lemma G in [Crawley] p. 117, 4th line. Whenever (in their terminology) p q/0 (i.e. the sublattice from 0 to p q) contains precisely three atoms and g is not the identity, g(p) = q. See also comments under cdleme0nex 34595. (Contributed by NM, 8-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐺𝑇𝑃𝑄) ∧ ((𝐺𝑃) ≠ 𝑃 ∧ (𝑅𝐺) (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → (𝐺𝑃) = 𝑄)

Theoremcdlemg17dN 34969* TODO: fix comment. (Contributed by NM, 9-May-2013.) (New usage is discouraged.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻𝐺𝑇) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝑃𝑄) ∧ ((𝑅𝐺) (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)) ∧ (𝐺𝑃) ≠ 𝑃)) → (𝑅𝐺) = ((𝑃 𝑄) 𝑊))

Theoremcdlemg17dALTN 34970 Same as cdlemg17dN 34969 with fewer antecedents but longer proof TODO: fix comment. (Contributed by NM, 9-May-2013.) (New usage is discouraged.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻𝐺𝑇) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ 𝑄𝐴𝑃𝑄) ∧ ((𝑅𝐺) (𝑃 𝑄) ∧ (𝐺𝑃) ≠ 𝑃)) → (𝑅𝐺) = ((𝑃 𝑄) 𝑊))

Theoremcdlemg17e 34971* TODO: fix comment. (Contributed by NM, 8-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ ((𝐺𝑃) ≠ 𝑃 ∧ (𝑅𝐺) (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → ((𝐹𝑃) (𝐹𝑄)) = ((𝐹𝑃) (𝑅𝐺)))

Theoremcdlemg17f 34972* TODO: fix comment. (Contributed by NM, 8-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ ((𝐺𝑃) ≠ 𝑃 ∧ (𝑅𝐺) (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → ((𝐹𝑃) (𝐹𝑄)) = ((𝐹𝑃) (𝐺‘(𝐹𝑃))))

Theoremcdlemg17g 34973* TODO: fix comment. (Contributed by NM, 9-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ ((𝐺𝑃) ≠ 𝑃 ∧ (𝑅𝐺) (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → (𝐺‘(𝐹𝑃)) ((𝐹𝑃) (𝐹𝑄)))

Theoremcdlemg17h 34974* TODO: fix comment. (Contributed by NM, 10-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ ((𝑆𝐴 ∧ ¬ 𝑆 𝑊) ∧ (𝐹𝑇𝐺𝑇) ∧ (𝑃𝑄𝑆 ((𝐹𝑃) (𝐹𝑄)))) ∧ ((𝐺𝑃) ≠ 𝑃 ∧ (𝑅𝐺) (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → (𝑆 = (𝐹𝑃) ∨ 𝑆 = (𝐹𝑄)))

Theoremcdlemg17i 34975* TODO: fix comment. (Contributed by NM, 10-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ ((𝐺𝑃) ≠ 𝑃 ∧ (𝑅𝐺) (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → (𝐺‘(𝐹𝑃)) = (𝐹𝑄))

Theoremcdlemg17ir 34976* TODO: fix comment. (Contributed by NM, 13-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ ((𝐺𝑃) ≠ 𝑃 ∧ (𝑅𝐺) (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → (𝐹‘(𝐺𝑃)) = (𝐹𝑄))

Theoremcdlemg17j 34977* TODO: fix comment. (Contributed by NM, 11-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ ((𝐺𝑃) ≠ 𝑃 ∧ (𝑅𝐺) (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → (𝐺‘(𝐹𝑃)) = (𝐹‘(𝐺𝑃)))

Theoremcdlemg17pq 34978* Utility theorem for swapping 𝑃 and 𝑄. TODO: fix comment. (Contributed by NM, 11-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ ((𝐺𝑃) ≠ 𝑃 ∧ (𝑅𝐺) (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑄𝑃) ∧ ((𝐺𝑄) ≠ 𝑄 ∧ (𝑅𝐺) (𝑄 𝑃) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑄 𝑟) = (𝑃 𝑟)))))

Theoremcdlemg17bq 34979* cdlemg17b 34968 with 𝑃 and 𝑄 swapped. Antecedent 𝐹 ∈ (𝑇𝑊) is redundant for easier use. TODO: should we have redundant antecedent for cdlemg17b 34968 also? (Contributed by NM, 13-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ ((𝐺𝑃) ≠ 𝑃 ∧ (𝑅𝐺) (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → (𝐺𝑄) = 𝑃)

Theoremcdlemg17iqN 34980* cdlemg17i 34975 with 𝑃 and 𝑄 swapped. (Contributed by NM, 13-May-2013.) (New usage is discouraged.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻 ∧ (𝐹𝑇𝐺𝑇)) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝑃𝑄) ∧ ((𝑅𝐺) (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)) ∧ (𝐺𝑃) ≠ 𝑃)) → (𝐺‘(𝐹𝑄)) = (𝐹𝑃))

Theoremcdlemg17irq 34981* cdlemg17ir 34976 with 𝑃 and 𝑄 swapped. (Contributed by NM, 13-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ ((𝐺𝑃) ≠ 𝑃 ∧ (𝑅𝐺) (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → (𝐹‘(𝐺𝑄)) = (𝐹𝑃))

Theoremcdlemg17jq 34982* cdlemg17j 34977 with 𝑃 and 𝑄 swapped. (Contributed by NM, 13-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ ((𝐺𝑃) ≠ 𝑃 ∧ (𝑅𝐺) (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → (𝐺‘(𝐹𝑄)) = (𝐹‘(𝐺𝑄)))

Theoremcdlemg17 34983* Part of Lemma G of [Crawley] p. 117, lines 7 and 8. We show an argument whose value at 𝐺 equals itself. TODO: fix comment. (Contributed by NM, 12-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ ((𝐺𝑃) ≠ 𝑃 ∧ (𝑅𝐺) (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → (𝐺‘((𝑃 (𝐹‘(𝐺𝑃))) (𝑄 (𝐹‘(𝐺𝑄))))) = ((𝑃 (𝐹‘(𝐺𝑃))) (𝑄 (𝐹‘(𝐺𝑄)))))

Theoremcdlemg18a 34984 Show two lines are different. TODO: fix comment. (Contributed by NM, 14-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴𝐹𝑇) ∧ (𝑃𝑄 ∧ ((𝐹𝑄) (𝐹𝑃)) ≠ (𝑃 𝑄))) → (𝑃 (𝐹𝑄)) ≠ (𝑄 (𝐹𝑃)))

Theoremcdlemg18b 34985 Lemma for cdlemg18c 34986. TODO: fix comment. (Contributed by NM, 15-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)    &   𝑈 = ((𝑃 𝑄) 𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝑃𝑄 ∧ (𝐹𝑃) ≠ 𝑄 ∧ ((𝐹𝑄) (𝐹𝑃)) ≠ (𝑃 𝑄))) → ¬ 𝑃 (𝑈 (𝐹𝑄)))

Theoremcdlemg18c 34986 Show two lines intersect at an atom. TODO: fix comment. (Contributed by NM, 15-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)    &   𝑈 = ((𝑃 𝑄) 𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝑃𝑄 ∧ (𝐹𝑃) ≠ 𝑄 ∧ ((𝐹𝑄) (𝐹𝑃)) ≠ (𝑃 𝑄))) → ((𝑃 (𝐹𝑄)) (𝑄 (𝐹𝑃))) ∈ 𝐴)

Theoremcdlemg18d 34987* Show two lines intersect at an atom. TODO: fix comment. (Contributed by NM, 15-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ ((𝐹𝑇𝐺𝑇) ∧ 𝑃𝑄 ∧ (𝐺𝑃) ≠ 𝑃) ∧ ((𝑅𝐺) (𝑃 𝑄) ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → ((𝑃 (𝐹‘(𝐺𝑃))) (𝑄 (𝐹‘(𝐺𝑄)))) ∈ 𝐴)

Theoremcdlemg18 34988* Show two lines intersect at an atom. TODO: fix comment. (Contributed by NM, 15-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ ((𝐹𝑇𝐺𝑇) ∧ 𝑃𝑄 ∧ (𝐺𝑃) ≠ 𝑃) ∧ ((𝑅𝐺) (𝑃 𝑄) ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → ((𝑃 (𝐹‘(𝐺𝑃))) (𝑄 (𝐹‘(𝐺𝑄)))) 𝑊)

Theoremcdlemg19a 34989* Show two lines intersect at an atom. TODO: fix comment. (Contributed by NM, 15-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ ((𝐹𝑇𝐺𝑇) ∧ 𝑃𝑄 ∧ (𝐺𝑃) ≠ 𝑃) ∧ ((𝑅𝐺) (𝑃 𝑄) ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → ((𝑃 (𝐹‘(𝐺𝑃))) (𝑄 (𝐹‘(𝐺𝑄)))) = ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊))

Theoremcdlemg19 34990* Show two lines intersect at an atom. TODO: fix comment. (Contributed by NM, 15-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ ((𝐹𝑇𝐺𝑇) ∧ 𝑃𝑄 ∧ (𝐺𝑃) ≠ 𝑃) ∧ ((𝑅𝐺) (𝑃 𝑄) ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg20 34991* Show two lines intersect at an atom. TODO: fix comment. (Contributed by NM, 23-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ ((𝑅𝐺) (𝑃 𝑄) ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg21 34992* Version of cdlemg19 with (𝑅𝐹) (𝑃 𝑄) instead of (𝑅𝐺) (𝑃 𝑄) as a condition. (Contributed by NM, 23-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ ((𝐹𝑇𝐺𝑇) ∧ 𝑃𝑄 ∧ (𝐹𝑃) ≠ 𝑃) ∧ ((𝑅𝐹) (𝑃 𝑄) ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg22 34993* cdlemg21 34992 with (𝐹𝑃) ≠ 𝑃 condition removed. (Contributed by NM, 23-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ ((𝑅𝐹) (𝑃 𝑄) ∧ ((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg24 34994* Combine cdlemg16z 34965 and cdlemg22 34993. TODO: Fix comment. (Contributed by NM, 24-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ (𝐹𝑇𝐺𝑇𝑃𝑄) ∧ (((𝐹‘(𝐺𝑃)) (𝐹‘(𝐺𝑄))) ≠ (𝑃 𝑄) ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg37 34995* Use cdlemg8 34937 to eliminate the ≠ (𝑃 𝑄) condition of cdlemg24 34994. (Contributed by NM, 31-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇𝑃𝑄 ∧ ¬ ∃𝑟𝐴𝑟 𝑊 ∧ (𝑃 𝑟) = (𝑄 𝑟)))) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊))

Theoremcdlemg25zz 34996 cdlemg16zz 34966 restated for easier studying. TODO: Discard this after everything is figured out. (Contributed by NM, 26-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑧𝐴 ∧ ¬ 𝑧 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇 ∧ ¬ (𝑅𝐹) (𝑃 𝑧) ∧ ¬ (𝑅𝐺) (𝑃 𝑧))) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑧 (𝐹‘(𝐺𝑧))) 𝑊))

Theoremcdlemg26zz 34997 cdlemg16zz 34966 restated for easier studying. TODO: Discard this after everything is figured out. (Contributed by NM, 26-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ ((𝑄𝐴 ∧ ¬ 𝑄 𝑊) ∧ (𝑧𝐴 ∧ ¬ 𝑧 𝑊) ∧ 𝐹𝑇) ∧ (𝐺𝑇 ∧ ¬ (𝑅𝐹) (𝑄 𝑧) ∧ ¬ (𝑅𝐺) (𝑄 𝑧))) → ((𝑄 (𝐹‘(𝐺𝑄))) 𝑊) = ((𝑧 (𝐹‘(𝐺𝑧))) 𝑊))

Theoremcdlemg27a 34998 For use with case when (𝑃 𝑣) (𝑄 (𝑅𝐹)) or (𝑃 𝑣) (𝑄 (𝑅𝐹)) is zero, letting us establish ¬ 𝑧 𝑊𝑧 (𝑃 𝑣) via 4atex 34380. TODO: Fix comment. (Contributed by NM, 28-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑣𝐴𝑣 𝑊)) ∧ (𝑧𝐴𝐹𝑇) ∧ (𝑣 ≠ (𝑅𝐹) ∧ 𝑧 (𝑃 𝑣) ∧ (𝐹𝑃) ≠ 𝑃)) → ¬ (𝑅𝐹) (𝑃 𝑧))

Theoremcdlemg28a 34999 Part of proof of Lemma G of [Crawley] p. 116. First equality of the equation of line 14 on p. 117. (Contributed by NM, 29-May-2013.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)       ((((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑣𝐴𝑣 𝑊)) ∧ ((𝑧𝐴 ∧ ¬ 𝑧 𝑊) ∧ 𝐹𝑇𝐺𝑇) ∧ ((𝑣 ≠ (𝑅𝐹) ∧ 𝑣 ≠ (𝑅𝐺)) ∧ 𝑧 (𝑃 𝑣) ∧ ((𝐹𝑃) ≠ 𝑃 ∧ (𝐺𝑃) ≠ 𝑃))) → ((𝑃 (𝐹‘(𝐺𝑃))) 𝑊) = ((𝑧 (𝐹‘(𝐺𝑧))) 𝑊))

Theoremcdlemg31b0N 35000 TODO: Fix comment. (Contributed by NM, 30-May-2013.) (New usage is discouraged.)
= (le‘𝐾)    &    = (join‘𝐾)    &    = (meet‘𝐾)    &   𝐴 = (Atoms‘𝐾)    &   𝐻 = (LHyp‘𝐾)    &   𝑇 = ((LTrn‘𝐾)‘𝑊)    &   𝑅 = ((trL‘𝐾)‘𝑊)    &   𝑁 = ((𝑃 𝑣) (𝑄 (𝑅𝐹)))       (((𝐾 ∈ HL ∧ 𝑊𝐻𝐹𝑇) ∧ ((𝑃𝐴 ∧ ¬ 𝑃 𝑊) ∧ (𝑄𝐴 ∧ ¬ 𝑄 𝑊)) ∧ ((𝑣𝐴𝑣 𝑊) ∧ 𝑣 ≠ (𝑅𝐹) ∧ (𝐹𝑃) ≠ 𝑃)) → (𝑁𝐴𝑁 = (0.‘𝐾)))

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144 14301-14400 145 14401-14500 146 14501-14600 147 14601-14700 148 14701-14800 149 14801-14900 150 14901-15000 151 15001-15100 152 15101-15200 153 15201-15300 154 15301-15400 155 15401-15500 156 15501-15600 157 15601-15700 158 15701-15800 159 15801-15900 160 15901-16000 161 16001-16100 162 16101-16200 163 16201-16300 164 16301-16400 165 16401-16500 166 16501-16600 167 16601-16700 168 16701-16800 169 16801-16900 170 16901-17000 171 17001-17100 172 17101-17200 173 17201-17300 174 17301-17400 175 17401-17500 176 17501-17600 177 17601-17700 178 17701-17800 179 17801-17900 180 17901-18000 181 18001-18100 182 18101-18200 183 18201-18300 184 18301-18400 185 18401-18500 186 18501-18600 187 18601-18700 188 18701-18800 189 18801-18900 190 18901-19000 191 19001-19100 192 19101-19200 193 19201-19300 194 19301-19400 195 19401-19500 196 19501-19600 197 19601-19700 198 19701-19800 199 19801-19900 200 19901-20000 201 20001-20100 202 20101-20200 203 20201-20300 204 20301-20400 205 20401-20500 206 20501-20600 207 20601-20700 208 20701-20800 209 20801-20900 210 20901-21000 211 21001-21100 212 21101-21200 213 21201-21300 214 21301-21400 215 21401-21500 216 21501-21600 217 21601-21700 218 21701-21800 219 21801-21900 220 21901-22000 221 22001-22100 222 22101-22200 223 22201-22300 224 22301-22400 225 22401-22500 226 22501-22600 227 22601-22700 228 22701-22800 229 22801-22900 230 22901-23000 231 23001-23100 232 23101-23200 233 23201-23300 234 23301-23400 235 23401-23500 236 23501-23600 237 23601-23700 238 23701-23800 239 23801-23900 240 23901-24000 241 24001-24100 242 24101-24200 243 24201-24300 244 24301-24400 245 24401-24500 246 24501-24600 247 24601-24700 248 24701-24800 249 24801-24900 250 24901-25000 251 25001-25100 252 25101-25200 253 25201-25300 254 25301-25400 255 25401-25500 256 25501-25600 257 25601-25700 258 25701-25800 259 25801-25900 260 25901-26000 261 26001-26100 262 26101-26200 263 26201-26300 264 26301-26400 265 26401-26500 266 26501-26600 267 26601-26700 268 26701-26800 269 26801-26900 270 26901-27000 271 27001-27100 272 27101-27200 273 27201-27300 274 27301-27400 275 27401-27500 276 27501-27600 277 27601-27700 278 27701-27800 279 27801-27900 280 27901-28000 281 28001-28100 282 28101-28200 283 28201-28300 284 28301-28400 285 28401-28500 286 28501-28600 287 28601-28700 288 28701-28800 289 28801-28900 290 28901-29000 291 29001-29100 292 29101-29200 293 29201-29300 294 29301-29400 295 29401-29500 296 29501-29600 297 29601-29700 298 29701-29800 299 29801-29900 300 29901-30000 301 30001-30100 302 30101-30200 303 30201-30300 304 30301-30400 305 30401-30500 306 30501-30600 307 30601-30700 308 30701-30800 309 30801-30900 310 30901-31000 311 31001-31100 312 31101-31200 313 31201-31300 314 31301-31400 315 31401-31500 316 31501-31600 317 31601-31700 318 31701-31800 319 31801-31900 320 31901-32000 321 32001-32100 322 32101-32200 323 32201-32300 324 32301-32400 325 32401-32500 326 32501-32600 327 32601-32700 328 32701-32800 329 32801-32900 330 32901-33000 331 33001-33100 332 33101-33200 333 33201-33300 334 33301-33400 335 33401-33500 336 33501-33600 337 33601-33700 338 33701-33800 339 33801-33900 340 33901-34000 341 34001-34100 342 34101-34200 343 34201-34300 344 34301-34400 345 34401-34500 346 34501-34600 347 34601-34700 348 34701-34800 349 34801-34900 350 34901-35000 351 35001-35100 352 35101-35200 353 35201-35300 354 35301-35400 355 35401-35500 356 35501-35600 357 35601-35700 358 35701-35800 359 35801-35900 360 35901-36000 361 36001-36100 362 36101-36200 363 36201-36300 364 36301-36400 365 36401-36500 366 36501-36600 367 36601-36700 368 36701-36800 369 36801-36900 370 36901-37000 371 37001-37100 372 37101-37200 373 37201-37300 374 37301-37400 375 37401-37500 376 37501-37600 377 37601-37700 378 37701-37800 379 37801-37900 380 37901-38000 381 38001-38100 382 38101-38200 383 38201-38300 384 38301-38400 385 38401-38500 386 38501-38600 387 38601-38700 388 38701-38800 389 38801-38900 390 38901-39000 391 39001-39100 392 39101-39200 393 39201-39300 394 39301-39400 395 39401-39500 396 39501-39600 397 39601-39700 398 39701-39800 399 39801-39900 400 39901-40000 401 40001-40100 402 40101-40200 403 40201-40300 404 40301-40400 405 40401-40500 406 40501-40600 407 40601-40700 408 40701-40800 409 40801-40900 410 40901-41000 411 41001-41100 412 41101-41200 413 41201-41300 414 41301-41400 415 41401-41500 416 41501-41600 417 41601-41700 418 41701-41800 419 41801-41900 420 41901-42000 421 42001-42100 422 42101-42200 423 42201-42300 424 42301-42360
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