Theorem ogrpinvOLD 29046

Description: In an ordered group, the ordering is compatible with group inverse. (Contributed by Thierry Arnoux, 30-Jan-2018.) (New usage is discouraged.) (Proof modification is discouraged.)

Hypotheses

Ref	Expression
ogrpsub.0	⊢ 𝐵 = (Base‘𝐺)
ogrpsub.1	⊢ ≤ = (le‘𝐺)
ogrpinv.2	⊢ 𝐼 = (invg‘𝐺)
ogrpinv.3	⊢ 0 = (0g‘𝐺)

Assertion

Ref	Expression
ogrpinvOLD	⊢ ((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵 ∧ 0 ≤ 𝑋) → (𝐼‘𝑋) ≤ 0 )

Proof of Theorem ogrpinvOLD

Step	Hyp	Ref	Expression
1		isogrp 29033	. . . . 5 ⊢ (𝐺 ∈ oGrp ↔ (𝐺 ∈ Grp ∧ 𝐺 ∈ oMnd))
2	1	simprbi 479	. . . 4 ⊢ (𝐺 ∈ oGrp → 𝐺 ∈ oMnd)
3	2	3ad2ant1 1075	. . 3 ⊢ ((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵 ∧ 0 ≤ 𝑋) → 𝐺 ∈ oMnd)
4	1	simplbi 475	. . . . 5 ⊢ (𝐺 ∈ oGrp → 𝐺 ∈ Grp)
5	4	3ad2ant1 1075	. . . 4 ⊢ ((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵 ∧ 0 ≤ 𝑋) → 𝐺 ∈ Grp)
6		ogrpsub.0	. . . . 5 ⊢ 𝐵 = (Base‘𝐺)
7		ogrpinv.3	. . . . 5 ⊢ 0 = (0g‘𝐺)
8	6, 7	grpidcl 17273	. . . 4 ⊢ (𝐺 ∈ Grp → 0 ∈ 𝐵)
9	5, 8	syl 17	. . 3 ⊢ ((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵 ∧ 0 ≤ 𝑋) → 0 ∈ 𝐵)
10		simp2 1055	. . 3 ⊢ ((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵 ∧ 0 ≤ 𝑋) → 𝑋 ∈ 𝐵)
11		ogrpinv.2	. . . . 5 ⊢ 𝐼 = (invg‘𝐺)
12	6, 11	grpinvcl 17290	. . . 4 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵) → (𝐼‘𝑋) ∈ 𝐵)
13	5, 10, 12	syl2anc 691	. . 3 ⊢ ((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵 ∧ 0 ≤ 𝑋) → (𝐼‘𝑋) ∈ 𝐵)
14		simp3 1056	. . 3 ⊢ ((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵 ∧ 0 ≤ 𝑋) → 0 ≤ 𝑋)
15		ogrpsub.1	. . . 4 ⊢ ≤ = (le‘𝐺)
16		eqid 2610	. . . 4 ⊢ (+g‘𝐺) = (+g‘𝐺)
17	6, 15, 16	omndadd 29037	. . 3 ⊢ ((𝐺 ∈ oMnd ∧ ( 0 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵 ∧ (𝐼‘𝑋) ∈ 𝐵) ∧ 0 ≤ 𝑋) → ( 0 (+g‘𝐺)(𝐼‘𝑋)) ≤ (𝑋(+g‘𝐺)(𝐼‘𝑋)))
18	3, 9, 10, 13, 14, 17	syl131anc 1331	. 2 ⊢ ((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵 ∧ 0 ≤ 𝑋) → ( 0 (+g‘𝐺)(𝐼‘𝑋)) ≤ (𝑋(+g‘𝐺)(𝐼‘𝑋)))
19	6, 16, 7	grplid 17275	. . 3 ⊢ ((𝐺 ∈ Grp ∧ (𝐼‘𝑋) ∈ 𝐵) → ( 0 (+g‘𝐺)(𝐼‘𝑋)) = (𝐼‘𝑋))
20	5, 13, 19	syl2anc 691	. 2 ⊢ ((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵 ∧ 0 ≤ 𝑋) → ( 0 (+g‘𝐺)(𝐼‘𝑋)) = (𝐼‘𝑋))
21	6, 16, 7, 11	grprinv 17292	. . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵) → (𝑋(+g‘𝐺)(𝐼‘𝑋)) = 0 )
22	5, 10, 21	syl2anc 691	. 2 ⊢ ((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵 ∧ 0 ≤ 𝑋) → (𝑋(+g‘𝐺)(𝐼‘𝑋)) = 0 )
23	18, 20, 22	3brtr3d 4614	1 ⊢ ((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵 ∧ 0 ≤ 𝑋) → (𝐼‘𝑋) ≤ 0 )

Syntax hints:   → wi 4   ∧ w3a 1031   = wceq 1475   ∈ wcel 1977   class class class wbr 4583  ‘cfv 5804  (class class class)co 6549  Basecbs 15695  +_gcplusg 15768  lecple 15775  0_gc0g 15923  Grpcgrp 17245  inv_gcminusg 17246  oMndcomnd 29028  oGrpcogrp 29029

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

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  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-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-nul 3875  df-if 4037  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-id 4953  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-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-riota 6511  df-ov 6552  df-0g 15925  df-mgm 17065  df-sgrp 17107  df-mnd 17118  df-grp 17248  df-minusg 17249  df-omnd 29030  df-ogrp 29031

This theorem is referenced by: (None)