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Mirrors > Home > MPE Home > Th. List > lmisfree | Structured version Visualization version GIF version |
Description: A module has a basis iff it is isomorphic to a free module. In settings where isomorphic objects are not distinguished, it is common to define "free module" as any module with a basis; thus for instance lbsex 18986 might be described as "every vector space is free." (Contributed by Stefan O'Rear, 26-Feb-2015.) |
Ref | Expression |
---|---|
lmisfree.j | ⊢ 𝐽 = (LBasis‘𝑊) |
lmisfree.f | ⊢ 𝐹 = (Scalar‘𝑊) |
Ref | Expression |
---|---|
lmisfree | ⊢ (𝑊 ∈ LMod → (𝐽 ≠ ∅ ↔ ∃𝑘 𝑊 ≃𝑚 (𝐹 freeLMod 𝑘))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | n0 3890 | . . 3 ⊢ (𝐽 ≠ ∅ ↔ ∃𝑗 𝑗 ∈ 𝐽) | |
2 | vex 3176 | . . . . . . . 8 ⊢ 𝑗 ∈ V | |
3 | 2 | enref 7874 | . . . . . . 7 ⊢ 𝑗 ≈ 𝑗 |
4 | lmisfree.f | . . . . . . . 8 ⊢ 𝐹 = (Scalar‘𝑊) | |
5 | lmisfree.j | . . . . . . . 8 ⊢ 𝐽 = (LBasis‘𝑊) | |
6 | 4, 5 | lbslcic 19999 | . . . . . . 7 ⊢ ((𝑊 ∈ LMod ∧ 𝑗 ∈ 𝐽 ∧ 𝑗 ≈ 𝑗) → 𝑊 ≃𝑚 (𝐹 freeLMod 𝑗)) |
7 | 3, 6 | mp3an3 1405 | . . . . . 6 ⊢ ((𝑊 ∈ LMod ∧ 𝑗 ∈ 𝐽) → 𝑊 ≃𝑚 (𝐹 freeLMod 𝑗)) |
8 | oveq2 6557 | . . . . . . . 8 ⊢ (𝑘 = 𝑗 → (𝐹 freeLMod 𝑘) = (𝐹 freeLMod 𝑗)) | |
9 | 8 | breq2d 4595 | . . . . . . 7 ⊢ (𝑘 = 𝑗 → (𝑊 ≃𝑚 (𝐹 freeLMod 𝑘) ↔ 𝑊 ≃𝑚 (𝐹 freeLMod 𝑗))) |
10 | 2, 9 | spcev 3273 | . . . . . 6 ⊢ (𝑊 ≃𝑚 (𝐹 freeLMod 𝑗) → ∃𝑘 𝑊 ≃𝑚 (𝐹 freeLMod 𝑘)) |
11 | 7, 10 | syl 17 | . . . . 5 ⊢ ((𝑊 ∈ LMod ∧ 𝑗 ∈ 𝐽) → ∃𝑘 𝑊 ≃𝑚 (𝐹 freeLMod 𝑘)) |
12 | 11 | ex 449 | . . . 4 ⊢ (𝑊 ∈ LMod → (𝑗 ∈ 𝐽 → ∃𝑘 𝑊 ≃𝑚 (𝐹 freeLMod 𝑘))) |
13 | 12 | exlimdv 1848 | . . 3 ⊢ (𝑊 ∈ LMod → (∃𝑗 𝑗 ∈ 𝐽 → ∃𝑘 𝑊 ≃𝑚 (𝐹 freeLMod 𝑘))) |
14 | 1, 13 | syl5bi 231 | . 2 ⊢ (𝑊 ∈ LMod → (𝐽 ≠ ∅ → ∃𝑘 𝑊 ≃𝑚 (𝐹 freeLMod 𝑘))) |
15 | lmicsym 18893 | . . . 4 ⊢ (𝑊 ≃𝑚 (𝐹 freeLMod 𝑘) → (𝐹 freeLMod 𝑘) ≃𝑚 𝑊) | |
16 | lmiclcl 18891 | . . . . 5 ⊢ (𝑊 ≃𝑚 (𝐹 freeLMod 𝑘) → 𝑊 ∈ LMod) | |
17 | 4 | lmodring 18694 | . . . . . . 7 ⊢ (𝑊 ∈ LMod → 𝐹 ∈ Ring) |
18 | vex 3176 | . . . . . . 7 ⊢ 𝑘 ∈ V | |
19 | eqid 2610 | . . . . . . . 8 ⊢ (𝐹 freeLMod 𝑘) = (𝐹 freeLMod 𝑘) | |
20 | eqid 2610 | . . . . . . . 8 ⊢ (𝐹 unitVec 𝑘) = (𝐹 unitVec 𝑘) | |
21 | eqid 2610 | . . . . . . . 8 ⊢ (LBasis‘(𝐹 freeLMod 𝑘)) = (LBasis‘(𝐹 freeLMod 𝑘)) | |
22 | 19, 20, 21 | frlmlbs 19955 | . . . . . . 7 ⊢ ((𝐹 ∈ Ring ∧ 𝑘 ∈ V) → ran (𝐹 unitVec 𝑘) ∈ (LBasis‘(𝐹 freeLMod 𝑘))) |
23 | 17, 18, 22 | sylancl 693 | . . . . . 6 ⊢ (𝑊 ∈ LMod → ran (𝐹 unitVec 𝑘) ∈ (LBasis‘(𝐹 freeLMod 𝑘))) |
24 | ne0i 3880 | . . . . . 6 ⊢ (ran (𝐹 unitVec 𝑘) ∈ (LBasis‘(𝐹 freeLMod 𝑘)) → (LBasis‘(𝐹 freeLMod 𝑘)) ≠ ∅) | |
25 | 23, 24 | syl 17 | . . . . 5 ⊢ (𝑊 ∈ LMod → (LBasis‘(𝐹 freeLMod 𝑘)) ≠ ∅) |
26 | 16, 25 | syl 17 | . . . 4 ⊢ (𝑊 ≃𝑚 (𝐹 freeLMod 𝑘) → (LBasis‘(𝐹 freeLMod 𝑘)) ≠ ∅) |
27 | 21, 5 | lmiclbs 19995 | . . . 4 ⊢ ((𝐹 freeLMod 𝑘) ≃𝑚 𝑊 → ((LBasis‘(𝐹 freeLMod 𝑘)) ≠ ∅ → 𝐽 ≠ ∅)) |
28 | 15, 26, 27 | sylc 63 | . . 3 ⊢ (𝑊 ≃𝑚 (𝐹 freeLMod 𝑘) → 𝐽 ≠ ∅) |
29 | 28 | exlimiv 1845 | . 2 ⊢ (∃𝑘 𝑊 ≃𝑚 (𝐹 freeLMod 𝑘) → 𝐽 ≠ ∅) |
30 | 14, 29 | impbid1 214 | 1 ⊢ (𝑊 ∈ LMod → (𝐽 ≠ ∅ ↔ ∃𝑘 𝑊 ≃𝑚 (𝐹 freeLMod 𝑘))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 195 ∧ wa 383 = wceq 1475 ∃wex 1695 ∈ wcel 1977 ≠ wne 2780 Vcvv 3173 ∅c0 3874 class class class wbr 4583 ran crn 5039 ‘cfv 5804 (class class class)co 6549 ≈ cen 7838 Scalarcsca 15771 Ringcrg 18370 LModclmod 18686 ≃𝑚 clmic 18842 LBasisclbs 18895 freeLMod cfrlm 19909 unitVec cuvc 19940 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-rep 4699 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-inf2 8421 ax-cnex 9871 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 ax-pre-lttrn 9890 ax-pre-ltadd 9891 ax-pre-mulgt0 9892 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-reu 2903 df-rmo 2904 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-int 4411 df-iun 4457 df-iin 4458 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-se 4998 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-pred 5597 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-isom 5813 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-of 6795 df-om 6958 df-1st 7059 df-2nd 7060 df-supp 7183 df-wrecs 7294 df-recs 7355 df-rdg 7393 df-1o 7447 df-oadd 7451 df-er 7629 df-map 7746 df-ixp 7795 df-en 7842 df-dom 7843 df-sdom 7844 df-fin 7845 df-fsupp 8159 df-sup 8231 df-oi 8298 df-card 8648 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 df-sub 10147 df-neg 10148 df-nn 10898 df-2 10956 df-3 10957 df-4 10958 df-5 10959 df-6 10960 df-7 10961 df-8 10962 df-9 10963 df-n0 11170 df-z 11255 df-dec 11370 df-uz 11564 df-fz 12198 df-fzo 12335 df-seq 12664 df-hash 12980 df-struct 15697 df-ndx 15698 df-slot 15699 df-base 15700 df-sets 15701 df-ress 15702 df-plusg 15781 df-mulr 15782 df-sca 15784 df-vsca 15785 df-ip 15786 df-tset 15787 df-ple 15788 df-ds 15791 df-hom 15793 df-cco 15794 df-0g 15925 df-gsum 15926 df-prds 15931 df-pws 15933 df-mre 16069 df-mrc 16070 df-acs 16072 df-mgm 17065 df-sgrp 17107 df-mnd 17118 df-mhm 17158 df-submnd 17159 df-grp 17248 df-minusg 17249 df-sbg 17250 df-mulg 17364 df-subg 17414 df-ghm 17481 df-cntz 17573 df-cmn 18018 df-abl 18019 df-mgp 18313 df-ur 18325 df-ring 18372 df-subrg 18601 df-lmod 18688 df-lss 18754 df-lsp 18793 df-lmhm 18843 df-lmim 18844 df-lmic 18845 df-lbs 18896 df-sra 18993 df-rgmod 18994 df-nzr 19079 df-dsmm 19895 df-frlm 19910 df-uvc 19941 df-lindf 19964 df-linds 19965 |
This theorem is referenced by: lvecisfrlm 20001 |
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