Theorem grpvlinv 20567

Description: Tuple-wise left inverse in groups. (Contributed by Stefan O'Rear, 5-Sep-2015.)

Hypotheses

Ref	Expression
grpvlinv.b	⊢ 𝐵 = (Base‘𝐺)
grpvlinv.p	⊢ + = (+g‘𝐺)
grpvlinv.n	⊢ 𝑁 = (invg‘𝐺)
grpvlinv.z	⊢ 0 = (0g‘𝐺)

Assertion

Ref	Expression
grpvlinv	⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ (𝐵 ↑𝑚 𝐼)) → ((𝑁 ∘ 𝑋) ∘𝑓 + 𝑋) = (𝐼 × { 0 }))

Proof of Theorem grpvlinv

Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		elmapex 8142	. . . 4 ⊢ (𝑋 ∈ (𝐵 ↑𝑚 𝐼) → (𝐵 ∈ V ∧ 𝐼 ∈ V))
2	1	simprd 491	. . 3 ⊢ (𝑋 ∈ (𝐵 ↑𝑚 𝐼) → 𝐼 ∈ V)
3	2	adantl 475	. 2 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ (𝐵 ↑𝑚 𝐼)) → 𝐼 ∈ V)
4		elmapi 8143	. . 3 ⊢ (𝑋 ∈ (𝐵 ↑𝑚 𝐼) → 𝑋:𝐼⟶𝐵)
5	4	adantl 475	. 2 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ (𝐵 ↑𝑚 𝐼)) → 𝑋:𝐼⟶𝐵)
6		grpvlinv.b	. . . 4 ⊢ 𝐵 = (Base‘𝐺)
7		grpvlinv.z	. . . 4 ⊢ 0 = (0g‘𝐺)
8	6, 7	grpidcl 17803	. . 3 ⊢ (𝐺 ∈ Grp → 0 ∈ 𝐵)
9	8	adantr 474	. 2 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ (𝐵 ↑𝑚 𝐼)) → 0 ∈ 𝐵)
10		grpvlinv.n	. . . 4 ⊢ 𝑁 = (invg‘𝐺)
11	6, 10	grpinvf 17819	. . 3 ⊢ (𝐺 ∈ Grp → 𝑁:𝐵⟶𝐵)
12	11	adantr 474	. 2 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ (𝐵 ↑𝑚 𝐼)) → 𝑁:𝐵⟶𝐵)
13		fcompt 6649	. . 3 ⊢ ((𝑁:𝐵⟶𝐵 ∧ 𝑋:𝐼⟶𝐵) → (𝑁 ∘ 𝑋) = (𝑥 ∈ 𝐼 ↦ (𝑁‘(𝑋‘𝑥))))
14	11, 4, 13	syl2an 591	. 2 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ (𝐵 ↑𝑚 𝐼)) → (𝑁 ∘ 𝑋) = (𝑥 ∈ 𝐼 ↦ (𝑁‘(𝑋‘𝑥))))
15		grpvlinv.p	. . . 4 ⊢ + = (+g‘𝐺)
16	6, 15, 7, 10	grplinv 17821	. . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑦 ∈ 𝐵) → ((𝑁‘𝑦) + 𝑦) = 0 )
17	16	adantlr 708	. 2 ⊢ (((𝐺 ∈ Grp ∧ 𝑋 ∈ (𝐵 ↑𝑚 𝐼)) ∧ 𝑦 ∈ 𝐵) → ((𝑁‘𝑦) + 𝑦) = 0 )
18	3, 5, 9, 12, 14, 17	caofinvl 7183	1 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ (𝐵 ↑𝑚 𝐼)) → ((𝑁 ∘ 𝑋) ∘𝑓 + 𝑋) = (𝐼 × { 0 }))

Syntax hints:   → wi 4   ∧ wa 386   = wceq 1658   ∈ wcel 2166  Vcvv 3413  {csn 4396   ↦ cmpt 4951   × cxp 5339   ∘ ccom 5345  ⟶wf 6118  ‘cfv 6122  (class class class)co 6904   ∘_𝑓 cof 7154   ↑_𝑚 cmap 8121  Basecbs 16221  +_gcplusg 16304  0_gc0g 16452  Grpcgrp 17775  inv_gcminusg 17776

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1896  ax-4 1910  ax-5 2011  ax-6 2077  ax-7 2114  ax-8 2168  ax-9 2175  ax-10 2194  ax-11 2209  ax-12 2222  ax-13 2390  ax-ext 2802  ax-rep 4993  ax-sep 5004  ax-nul 5012  ax-pow 5064  ax-pr 5126  ax-un 7208

This theorem depends on definitions:  df-bi 199  df-an 387  df-or 881  df-3an 1115  df-tru 1662  df-ex 1881  df-nf 1885  df-sb 2070  df-mo 2604  df-eu 2639  df-clab 2811  df-cleq 2817  df-clel 2820  df-nfc 2957  df-ne 2999  df-ral 3121  df-rex 3122  df-reu 3123  df-rmo 3124  df-rab 3125  df-v 3415  df-sbc 3662  df-csb 3757  df-dif 3800  df-un 3802  df-in 3804  df-ss 3811  df-nul 4144  df-if 4306  df-pw 4379  df-sn 4397  df-pr 4399  df-op 4403  df-uni 4658  df-iun 4741  df-br 4873  df-opab 4935  df-mpt 4952  df-id 5249  df-xp 5347  df-rel 5348  df-cnv 5349  df-co 5350  df-dm 5351  df-rn 5352  df-res 5353  df-ima 5354  df-iota 6085  df-fun 6124  df-fn 6125  df-f 6126  df-f1 6127  df-fo 6128  df-f1o 6129  df-fv 6130  df-riota 6865  df-ov 6907  df-oprab 6908  df-mpt2 6909  df-of 7156  df-1st 7427  df-2nd 7428  df-map 8123  df-0g 16454  df-mgm 17594  df-sgrp 17636  df-mnd 17647  df-grp 17778  df-minusg 17779

This theorem is referenced by:  mendring  38604