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Theorem ablnnncan1 19769
Description: Cancellation law for group subtraction. (nnncan1 11431 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 19731 . . . . 5 (𝐺 ∈ Abel → 𝐺 ∈ Grp)
73, 6syl 17 . . . 4 (𝜑𝐺 ∈ Grp)
8 ablsub32.z . . . 4 (𝜑𝑍𝐵)
91, 2grpsubcl 18967 . . . 4 ((𝐺 ∈ Grp ∧ 𝑋𝐵𝑍𝐵) → (𝑋 𝑍) ∈ 𝐵)
107, 4, 8, 9syl3anc 1374 . . 3 (𝜑 → (𝑋 𝑍) ∈ 𝐵)
111, 2, 3, 4, 5, 10ablsub32 19767 . 2 (𝜑 → ((𝑋 𝑌) (𝑋 𝑍)) = ((𝑋 (𝑋 𝑍)) 𝑌))
121, 2, 3, 4, 8ablnncan 19766 . . 3 (𝜑 → (𝑋 (𝑋 𝑍)) = 𝑍)
1312oveq1d 7385 . 2 (𝜑 → ((𝑋 (𝑋 𝑍)) 𝑌) = (𝑍 𝑌))
1411, 13eqtrd 2772 1 (𝜑 → ((𝑋 𝑌) (𝑋 𝑍)) = (𝑍 𝑌))
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1542  wcel 2114  cfv 6502  (class class class)co 7370  Basecbs 17150  Grpcgrp 18880  -gcsg 18882  Abelcabl 19727
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 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-sep 5245  ax-nul 5255  ax-pow 5314  ax-pr 5381  ax-un 7692
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ne 2934  df-ral 3053  df-rex 3063  df-rmo 3352  df-reu 3353  df-rab 3402  df-v 3444  df-sbc 3743  df-csb 3852  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-nul 4288  df-if 4482  df-pw 4558  df-sn 4583  df-pr 4585  df-op 4589  df-uni 4866  df-iun 4950  df-br 5101  df-opab 5163  df-mpt 5182  df-id 5529  df-xp 5640  df-rel 5641  df-cnv 5642  df-co 5643  df-dm 5644  df-rn 5645  df-res 5646  df-ima 5647  df-iota 6458  df-fun 6504  df-fn 6505  df-f 6506  df-fv 6510  df-riota 7327  df-ov 7373  df-oprab 7374  df-mpo 7375  df-1st 7945  df-2nd 7946  df-0g 17375  df-mgm 18579  df-sgrp 18658  df-mnd 18674  df-grp 18883  df-minusg 18884  df-sbg 18885  df-cmn 19728  df-abl 19729
This theorem is referenced by:  minveclem2  25399  ply1divmo  26114  baerlem3lem2  42115
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