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Theorem abl32 14093
Description: Commutative/associative law for Abelian groups. (Contributed by Stefan O'Rear, 10-Apr-2015.) (Revised by Mario Carneiro, 21-Apr-2016.)
Hypotheses
Ref Expression
ablcom.b 𝐵 = (Base‘𝐺)
ablcom.p + = (+g𝐺)
abl32.g (𝜑𝐺 ∈ Abel)
abl32.x (𝜑𝑋𝐵)
abl32.y (𝜑𝑌𝐵)
abl32.z (𝜑𝑍𝐵)
Assertion
Ref Expression
abl32 (𝜑 → ((𝑋 + 𝑌) + 𝑍) = ((𝑋 + 𝑍) + 𝑌))

Proof of Theorem abl32
StepHypRef Expression
1 abl32.g . . 3 (𝜑𝐺 ∈ Abel)
2 ablcmn 14077 . . 3 (𝐺 ∈ Abel → 𝐺 ∈ CMnd)
31, 2syl 14 . 2 (𝜑𝐺 ∈ CMnd)
4 abl32.x . 2 (𝜑𝑋𝐵)
5 abl32.y . 2 (𝜑𝑌𝐵)
6 abl32.z . 2 (𝜑𝑍𝐵)
7 ablcom.b . . 3 𝐵 = (Base‘𝐺)
8 ablcom.p . . 3 + = (+g𝐺)
97, 8cmn32 14090 . 2 ((𝐺 ∈ CMnd ∧ (𝑋𝐵𝑌𝐵𝑍𝐵)) → ((𝑋 + 𝑌) + 𝑍) = ((𝑋 + 𝑍) + 𝑌))
103, 4, 5, 6, 9syl13anc 1280 1 (𝜑 → ((𝑋 + 𝑌) + 𝑍) = ((𝑋 + 𝑍) + 𝑌))
Colors of variables: wff set class
Syntax hints:  wi 4   = wceq 1402  wcel 2209  cfv 5375  (class class class)co 6079  Basecbs 13335  +gcplusg 13414  CMndccmn 14070  Abelcabl 14071
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4247  ax-pow 4309  ax-pr 4344  ax-un 4576  ax-cnex 8264  ax-resscn 8265  ax-1re 8267  ax-addrcl 8270
This theorem depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ral 2533  df-rex 2534  df-rab 2537  df-v 2823  df-sbc 3052  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3714  df-pr 3715  df-op 3717  df-uni 3934  df-int 3969  df-br 4129  df-opab 4191  df-mpt 4192  df-id 4436  df-xp 4778  df-rel 4779  df-cnv 4780  df-co 4781  df-dm 4782  df-rn 4783  df-res 4784  df-iota 5335  df-fun 5377  df-fn 5378  df-fv 5383  df-ov 6082  df-inn 9288  df-2 9346  df-ndx 13338  df-slot 13339  df-base 13341  df-plusg 13427  df-sgrp 13700  df-mnd 13713  df-cmn 14072  df-abl 14073
This theorem is referenced by: (None)
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