Theorem ogrpinv0lt 30718

Description: In an ordered group, the ordering is compatible with group inverse. (Contributed by Thierry Arnoux, 3-Sep-2018.)

Hypotheses

Ref	Expression
ogrpinvlt.0	⊢ 𝐵 = (Base‘𝐺)
ogrpinvlt.1	⊢ < = (lt‘𝐺)
ogrpinvlt.2	⊢ 𝐼 = (invg‘𝐺)
ogrpinv0lt.3	⊢ 0 = (0g‘𝐺)

Assertion

Ref	Expression
ogrpinv0lt	⊢ ((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) → ( 0 < 𝑋 ↔ (𝐼‘𝑋) < 0 ))

Proof of Theorem ogrpinv0lt

Step	Hyp	Ref	Expression
1		simpll 765	. . . 4 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ 0 < 𝑋) → 𝐺 ∈ oGrp)
2		ogrpgrp 30699	. . . . . 6 ⊢ (𝐺 ∈ oGrp → 𝐺 ∈ Grp)
3	1, 2	syl 17	. . . . 5 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ 0 < 𝑋) → 𝐺 ∈ Grp)
4		ogrpinvlt.0	. . . . . 6 ⊢ 𝐵 = (Base‘𝐺)
5		ogrpinv0lt.3	. . . . . 6 ⊢ 0 = (0g‘𝐺)
6	4, 5	grpidcl 18125	. . . . 5 ⊢ (𝐺 ∈ Grp → 0 ∈ 𝐵)
7	3, 6	syl 17	. . . 4 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ 0 < 𝑋) → 0 ∈ 𝐵)
8		simplr 767	. . . 4 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ 0 < 𝑋) → 𝑋 ∈ 𝐵)
9		ogrpinvlt.2	. . . . . 6 ⊢ 𝐼 = (invg‘𝐺)
10	4, 9	grpinvcl 18145	. . . . 5 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵) → (𝐼‘𝑋) ∈ 𝐵)
11	3, 8, 10	syl2anc 586	. . . 4 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ 0 < 𝑋) → (𝐼‘𝑋) ∈ 𝐵)
12		simpr 487	. . . 4 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ 0 < 𝑋) → 0 < 𝑋)
13		ogrpinvlt.1	. . . . 5 ⊢ < = (lt‘𝐺)
14		eqid 2821	. . . . 5 ⊢ (+g‘𝐺) = (+g‘𝐺)
15	4, 13, 14	ogrpaddlt 30713	. . . 4 ⊢ ((𝐺 ∈ oGrp ∧ ( 0 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵 ∧ (𝐼‘𝑋) ∈ 𝐵) ∧ 0 < 𝑋) → ( 0 (+g‘𝐺)(𝐼‘𝑋)) < (𝑋(+g‘𝐺)(𝐼‘𝑋)))
16	1, 7, 8, 11, 12, 15	syl131anc 1379	. . 3 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ 0 < 𝑋) → ( 0 (+g‘𝐺)(𝐼‘𝑋)) < (𝑋(+g‘𝐺)(𝐼‘𝑋)))
17	4, 14, 5	grplid 18127	. . . 4 ⊢ ((𝐺 ∈ Grp ∧ (𝐼‘𝑋) ∈ 𝐵) → ( 0 (+g‘𝐺)(𝐼‘𝑋)) = (𝐼‘𝑋))
18	3, 11, 17	syl2anc 586	. . 3 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ 0 < 𝑋) → ( 0 (+g‘𝐺)(𝐼‘𝑋)) = (𝐼‘𝑋))
19	4, 14, 5, 9	grprinv 18147	. . . 4 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵) → (𝑋(+g‘𝐺)(𝐼‘𝑋)) = 0 )
20	3, 8, 19	syl2anc 586	. . 3 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ 0 < 𝑋) → (𝑋(+g‘𝐺)(𝐼‘𝑋)) = 0 )
21	16, 18, 20	3brtr3d 5090	. 2 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ 0 < 𝑋) → (𝐼‘𝑋) < 0 )
22		simpll 765	. . . 4 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ (𝐼‘𝑋) < 0 ) → 𝐺 ∈ oGrp)
23	22, 2	syl 17	. . . . 5 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ (𝐼‘𝑋) < 0 ) → 𝐺 ∈ Grp)
24		simplr 767	. . . . 5 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ (𝐼‘𝑋) < 0 ) → 𝑋 ∈ 𝐵)
25	23, 24, 10	syl2anc 586	. . . 4 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ (𝐼‘𝑋) < 0 ) → (𝐼‘𝑋) ∈ 𝐵)
26	22, 2, 6	3syl 18	. . . 4 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ (𝐼‘𝑋) < 0 ) → 0 ∈ 𝐵)
27		simpr 487	. . . 4 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ (𝐼‘𝑋) < 0 ) → (𝐼‘𝑋) < 0 )
28	4, 13, 14	ogrpaddlt 30713	. . . 4 ⊢ ((𝐺 ∈ oGrp ∧ ((𝐼‘𝑋) ∈ 𝐵 ∧ 0 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ (𝐼‘𝑋) < 0 ) → ((𝐼‘𝑋)(+g‘𝐺)𝑋) < ( 0 (+g‘𝐺)𝑋))
29	22, 25, 26, 24, 27, 28	syl131anc 1379	. . 3 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ (𝐼‘𝑋) < 0 ) → ((𝐼‘𝑋)(+g‘𝐺)𝑋) < ( 0 (+g‘𝐺)𝑋))
30	4, 14, 5, 9	grplinv 18146	. . . 4 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵) → ((𝐼‘𝑋)(+g‘𝐺)𝑋) = 0 )
31	23, 24, 30	syl2anc 586	. . 3 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ (𝐼‘𝑋) < 0 ) → ((𝐼‘𝑋)(+g‘𝐺)𝑋) = 0 )
32	4, 14, 5	grplid 18127	. . . 4 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵) → ( 0 (+g‘𝐺)𝑋) = 𝑋)
33	23, 24, 32	syl2anc 586	. . 3 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ (𝐼‘𝑋) < 0 ) → ( 0 (+g‘𝐺)𝑋) = 𝑋)
34	29, 31, 33	3brtr3d 5090	. 2 ⊢ (((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) ∧ (𝐼‘𝑋) < 0 ) → 0 < 𝑋)
35	21, 34	impbida 799	1 ⊢ ((𝐺 ∈ oGrp ∧ 𝑋 ∈ 𝐵) → ( 0 < 𝑋 ↔ (𝐼‘𝑋) < 0 ))

Syntax hints:   → wi 4   ↔ wb 208   ∧ wa 398   = wceq 1533   ∈ wcel 2110   class class class wbr 5059  ‘cfv 6350  (class class class)co 7150  Basecbs 16477  +_gcplusg 16559  0_gc0g 16707  ltcplt 17545  Grpcgrp 18097  inv_gcminusg 18098  oGrpcogrp 30694

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1907  ax-6 1966  ax-7 2011  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2156  ax-12 2172  ax-ext 2793  ax-sep 5196  ax-nul 5203  ax-pow 5259  ax-pr 5322  ax-un 7455

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1536  df-ex 1777  df-nf 1781  df-sb 2066  df-mo 2618  df-eu 2650  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-ral 3143  df-rex 3144  df-reu 3145  df-rmo 3146  df-rab 3147  df-v 3497  df-sbc 3773  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-nul 4292  df-if 4468  df-pw 4541  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4833  df-br 5060  df-opab 5122  df-mpt 5140  df-id 5455  df-xp 5556  df-rel 5557  df-cnv 5558  df-co 5559  df-dm 5560  df-rn 5561  df-res 5562  df-ima 5563  df-iota 6309  df-fun 6352  df-fn 6353  df-f 6354  df-fv 6358  df-riota 7108  df-ov 7153  df-0g 16709  df-plt 17562  df-mgm 17846  df-sgrp 17895  df-mnd 17906  df-grp 18100  df-minusg 18101  df-omnd 30695  df-ogrp 30696

This theorem is referenced by:  archirngz  30813