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Theorem grpaddsubass 18256
Description: Associative-type law for group subtraction and addition. (Contributed by NM, 16-Apr-2014.)
Hypotheses
Ref Expression
grpsubadd.b 𝐵 = (Base‘𝐺)
grpsubadd.p + = (+g𝐺)
grpsubadd.m = (-g𝐺)
Assertion
Ref Expression
grpaddsubass ((𝐺 ∈ Grp ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → ((𝑋 + 𝑌) 𝑍) = (𝑋 + (𝑌 𝑍)))

Proof of Theorem grpaddsubass
StepHypRef Expression
1 simpl 486 . . 3 ((𝐺 ∈ Grp ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → 𝐺 ∈ Grp)
2 simpr1 1191 . . 3 ((𝐺 ∈ Grp ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → 𝑋𝐵)
3 simpr2 1192 . . 3 ((𝐺 ∈ Grp ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → 𝑌𝐵)
4 grpsubadd.b . . . . 5 𝐵 = (Base‘𝐺)
5 eqid 2758 . . . . 5 (invg𝐺) = (invg𝐺)
64, 5grpinvcl 18218 . . . 4 ((𝐺 ∈ Grp ∧ 𝑍𝐵) → ((invg𝐺)‘𝑍) ∈ 𝐵)
763ad2antr3 1187 . . 3 ((𝐺 ∈ Grp ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → ((invg𝐺)‘𝑍) ∈ 𝐵)
8 grpsubadd.p . . . 4 + = (+g𝐺)
94, 8grpass 18178 . . 3 ((𝐺 ∈ Grp ∧ (𝑋𝐵𝑌𝐵 ∧ ((invg𝐺)‘𝑍) ∈ 𝐵)) → ((𝑋 + 𝑌) + ((invg𝐺)‘𝑍)) = (𝑋 + (𝑌 + ((invg𝐺)‘𝑍))))
101, 2, 3, 7, 9syl13anc 1369 . 2 ((𝐺 ∈ Grp ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → ((𝑋 + 𝑌) + ((invg𝐺)‘𝑍)) = (𝑋 + (𝑌 + ((invg𝐺)‘𝑍))))
114, 8grpcl 18177 . . . 4 ((𝐺 ∈ Grp ∧ 𝑋𝐵𝑌𝐵) → (𝑋 + 𝑌) ∈ 𝐵)
12113adant3r3 1181 . . 3 ((𝐺 ∈ Grp ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → (𝑋 + 𝑌) ∈ 𝐵)
13 simpr3 1193 . . 3 ((𝐺 ∈ Grp ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → 𝑍𝐵)
14 grpsubadd.m . . . 4 = (-g𝐺)
154, 8, 5, 14grpsubval 18216 . . 3 (((𝑋 + 𝑌) ∈ 𝐵𝑍𝐵) → ((𝑋 + 𝑌) 𝑍) = ((𝑋 + 𝑌) + ((invg𝐺)‘𝑍)))
1612, 13, 15syl2anc 587 . 2 ((𝐺 ∈ Grp ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → ((𝑋 + 𝑌) 𝑍) = ((𝑋 + 𝑌) + ((invg𝐺)‘𝑍)))
174, 8, 5, 14grpsubval 18216 . . . 4 ((𝑌𝐵𝑍𝐵) → (𝑌 𝑍) = (𝑌 + ((invg𝐺)‘𝑍)))
183, 13, 17syl2anc 587 . . 3 ((𝐺 ∈ Grp ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → (𝑌 𝑍) = (𝑌 + ((invg𝐺)‘𝑍)))
1918oveq2d 7166 . 2 ((𝐺 ∈ Grp ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → (𝑋 + (𝑌 𝑍)) = (𝑋 + (𝑌 + ((invg𝐺)‘𝑍))))
2010, 16, 193eqtr4d 2803 1 ((𝐺 ∈ Grp ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → ((𝑋 + 𝑌) 𝑍) = (𝑋 + (𝑌 𝑍)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 399  w3a 1084   = wceq 1538  wcel 2111  cfv 6335  (class class class)co 7150  Basecbs 16541  +gcplusg 16623  Grpcgrp 18169  invgcminusg 18170  -gcsg 18171
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 2729  ax-sep 5169  ax-nul 5176  ax-pow 5234  ax-pr 5298  ax-un 7459
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-fal 1551  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2557  df-eu 2588  df-clab 2736  df-cleq 2750  df-clel 2830  df-nfc 2901  df-ne 2952  df-ral 3075  df-rex 3076  df-reu 3077  df-rmo 3078  df-rab 3079  df-v 3411  df-sbc 3697  df-csb 3806  df-dif 3861  df-un 3863  df-in 3865  df-ss 3875  df-nul 4226  df-if 4421  df-pw 4496  df-sn 4523  df-pr 4525  df-op 4529  df-uni 4799  df-iun 4885  df-br 5033  df-opab 5095  df-mpt 5113  df-id 5430  df-xp 5530  df-rel 5531  df-cnv 5532  df-co 5533  df-dm 5534  df-rn 5535  df-res 5536  df-ima 5537  df-iota 6294  df-fun 6337  df-fn 6338  df-f 6339  df-fv 6343  df-riota 7108  df-ov 7153  df-oprab 7154  df-mpo 7155  df-1st 7693  df-2nd 7694  df-0g 16773  df-mgm 17918  df-sgrp 17967  df-mnd 17978  df-grp 18172  df-minusg 18173  df-sbg 18174
This theorem is referenced by:  grppncan  18257  grpnpncan  18261  nsgconj  18378  conjghm  18456  conjnmz  18459  conjnmzb  18460  sylow3lem1  18819  sylow3lem2  18820  abladdsub  19003  ablsubsub  19006  cpmadugsumlemF  21576  archiabllem2a  30974
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