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Theorem ablnnncan1 18937
Description: Cancellation law for group subtraction. (nnncan1 10911 analog.) (Contributed by NM, 7-Apr-2015.)
Hypotheses
Ref Expression
ablnncan.b 𝐵 = (Base‘𝐺)
ablnncan.m = (-g𝐺)
ablnncan.g (𝜑𝐺 ∈ Abel)
ablnncan.x (𝜑𝑋𝐵)
ablnncan.y (𝜑𝑌𝐵)
ablsub32.z (𝜑𝑍𝐵)
Assertion
Ref Expression
ablnnncan1 (𝜑 → ((𝑋 𝑌) (𝑋 𝑍)) = (𝑍 𝑌))

Proof of Theorem ablnnncan1
StepHypRef Expression
1 ablnncan.b . . 3 𝐵 = (Base‘𝐺)
2 ablnncan.m . . 3 = (-g𝐺)
3 ablnncan.g . . 3 (𝜑𝐺 ∈ Abel)
4 ablnncan.x . . 3 (𝜑𝑋𝐵)
5 ablnncan.y . . 3 (𝜑𝑌𝐵)
6 ablgrp 18903 . . . . 5 (𝐺 ∈ Abel → 𝐺 ∈ Grp)
73, 6syl 17 . . . 4 (𝜑𝐺 ∈ Grp)
8 ablsub32.z . . . 4 (𝜑𝑍𝐵)
91, 2grpsubcl 18171 . . . 4 ((𝐺 ∈ Grp ∧ 𝑋𝐵𝑍𝐵) → (𝑋 𝑍) ∈ 𝐵)
107, 4, 8, 9syl3anc 1368 . . 3 (𝜑 → (𝑋 𝑍) ∈ 𝐵)
111, 2, 3, 4, 5, 10ablsub32 18935 . 2 (𝜑 → ((𝑋 𝑌) (𝑋 𝑍)) = ((𝑋 (𝑋 𝑍)) 𝑌))
121, 2, 3, 4, 8ablnncan 18934 . . 3 (𝜑 → (𝑋 (𝑋 𝑍)) = 𝑍)
1312oveq1d 7150 . 2 (𝜑 → ((𝑋 (𝑋 𝑍)) 𝑌) = (𝑍 𝑌))
1411, 13eqtrd 2833 1 (𝜑 → ((𝑋 𝑌) (𝑋 𝑍)) = (𝑍 𝑌))
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1538  wcel 2111  cfv 6324  (class class class)co 7135  Basecbs 16475  Grpcgrp 18095  -gcsg 18097  Abelcabl 18899
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2113  ax-9 2121  ax-10 2142  ax-11 2158  ax-12 2175  ax-ext 2770  ax-sep 5167  ax-nul 5174  ax-pow 5231  ax-pr 5295  ax-un 7441
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2598  df-eu 2629  df-clab 2777  df-cleq 2791  df-clel 2870  df-nfc 2938  df-ne 2988  df-ral 3111  df-rex 3112  df-reu 3113  df-rmo 3114  df-rab 3115  df-v 3443  df-sbc 3721  df-csb 3829  df-dif 3884  df-un 3886  df-in 3888  df-ss 3898  df-nul 4244  df-if 4426  df-pw 4499  df-sn 4526  df-pr 4528  df-op 4532  df-uni 4801  df-iun 4883  df-br 5031  df-opab 5093  df-mpt 5111  df-id 5425  df-xp 5525  df-rel 5526  df-cnv 5527  df-co 5528  df-dm 5529  df-rn 5530  df-res 5531  df-ima 5532  df-iota 6283  df-fun 6326  df-fn 6327  df-f 6328  df-fv 6332  df-riota 7093  df-ov 7138  df-oprab 7139  df-mpo 7140  df-1st 7671  df-2nd 7672  df-0g 16707  df-mgm 17844  df-sgrp 17893  df-mnd 17904  df-grp 18098  df-minusg 18099  df-sbg 18100  df-cmn 18900  df-abl 18901
This theorem is referenced by:  minveclem2  24030  ply1divmo  24736  baerlem3lem2  39006
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