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Theorem abladdsub 18486
Description: Associative-type law for group subtraction and addition. (Contributed by NM, 19-Apr-2014.)
Hypotheses
Ref Expression
ablsubadd.b 𝐵 = (Base‘𝐺)
ablsubadd.p + = (+g𝐺)
ablsubadd.m = (-g𝐺)
Assertion
Ref Expression
abladdsub ((𝐺 ∈ Abel ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → ((𝑋 + 𝑌) 𝑍) = ((𝑋 𝑍) + 𝑌))

Proof of Theorem abladdsub
StepHypRef Expression
1 ablsubadd.b . . . . 5 𝐵 = (Base‘𝐺)
2 ablsubadd.p . . . . 5 + = (+g𝐺)
31, 2ablcom 18476 . . . 4 ((𝐺 ∈ Abel ∧ 𝑋𝐵𝑌𝐵) → (𝑋 + 𝑌) = (𝑌 + 𝑋))
433adant3r3 1235 . . 3 ((𝐺 ∈ Abel ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → (𝑋 + 𝑌) = (𝑌 + 𝑋))
54oveq1d 6857 . 2 ((𝐺 ∈ Abel ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → ((𝑋 + 𝑌) 𝑍) = ((𝑌 + 𝑋) 𝑍))
6 ablgrp 18464 . . . 4 (𝐺 ∈ Abel → 𝐺 ∈ Grp)
76adantr 472 . . 3 ((𝐺 ∈ Abel ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → 𝐺 ∈ Grp)
8 simpr2 1250 . . 3 ((𝐺 ∈ Abel ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → 𝑌𝐵)
9 simpr1 1248 . . 3 ((𝐺 ∈ Abel ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → 𝑋𝐵)
10 simpr3 1252 . . 3 ((𝐺 ∈ Abel ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → 𝑍𝐵)
11 ablsubadd.m . . . 4 = (-g𝐺)
121, 2, 11grpaddsubass 17774 . . 3 ((𝐺 ∈ Grp ∧ (𝑌𝐵𝑋𝐵𝑍𝐵)) → ((𝑌 + 𝑋) 𝑍) = (𝑌 + (𝑋 𝑍)))
137, 8, 9, 10, 12syl13anc 1491 . 2 ((𝐺 ∈ Abel ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → ((𝑌 + 𝑋) 𝑍) = (𝑌 + (𝑋 𝑍)))
14 simpl 474 . . 3 ((𝐺 ∈ Abel ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → 𝐺 ∈ Abel)
151, 11grpsubcl 17764 . . . 4 ((𝐺 ∈ Grp ∧ 𝑋𝐵𝑍𝐵) → (𝑋 𝑍) ∈ 𝐵)
167, 9, 10, 15syl3anc 1490 . . 3 ((𝐺 ∈ Abel ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → (𝑋 𝑍) ∈ 𝐵)
171, 2ablcom 18476 . . 3 ((𝐺 ∈ Abel ∧ 𝑌𝐵 ∧ (𝑋 𝑍) ∈ 𝐵) → (𝑌 + (𝑋 𝑍)) = ((𝑋 𝑍) + 𝑌))
1814, 8, 16, 17syl3anc 1490 . 2 ((𝐺 ∈ Abel ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → (𝑌 + (𝑋 𝑍)) = ((𝑋 𝑍) + 𝑌))
195, 13, 183eqtrd 2803 1 ((𝐺 ∈ Abel ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → ((𝑋 + 𝑌) 𝑍) = ((𝑋 𝑍) + 𝑌))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 384  w3a 1107   = wceq 1652  wcel 2155  cfv 6068  (class class class)co 6842  Basecbs 16132  +gcplusg 16216  Grpcgrp 17691  -gcsg 17693  Abelcabl 18460
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1890  ax-4 1904  ax-5 2005  ax-6 2069  ax-7 2105  ax-8 2157  ax-9 2164  ax-10 2183  ax-11 2198  ax-12 2211  ax-13 2352  ax-ext 2743  ax-rep 4930  ax-sep 4941  ax-nul 4949  ax-pow 5001  ax-pr 5062  ax-un 7147
This theorem depends on definitions:  df-bi 198  df-an 385  df-or 874  df-3an 1109  df-tru 1656  df-ex 1875  df-nf 1879  df-sb 2062  df-mo 2565  df-eu 2582  df-clab 2752  df-cleq 2758  df-clel 2761  df-nfc 2896  df-ne 2938  df-ral 3060  df-rex 3061  df-reu 3062  df-rmo 3063  df-rab 3064  df-v 3352  df-sbc 3597  df-csb 3692  df-dif 3735  df-un 3737  df-in 3739  df-ss 3746  df-nul 4080  df-if 4244  df-pw 4317  df-sn 4335  df-pr 4337  df-op 4341  df-uni 4595  df-iun 4678  df-br 4810  df-opab 4872  df-mpt 4889  df-id 5185  df-xp 5283  df-rel 5284  df-cnv 5285  df-co 5286  df-dm 5287  df-rn 5288  df-res 5289  df-ima 5290  df-iota 6031  df-fun 6070  df-fn 6071  df-f 6072  df-f1 6073  df-fo 6074  df-f1o 6075  df-fv 6076  df-riota 6803  df-ov 6845  df-oprab 6846  df-mpt2 6847  df-1st 7366  df-2nd 7367  df-0g 16370  df-mgm 17510  df-sgrp 17552  df-mnd 17563  df-grp 17694  df-minusg 17695  df-sbg 17696  df-cmn 18461  df-abl 18462
This theorem is referenced by:  ablpncan2  18487  ablsubsub  18489  ip2subdi  20264
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