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Mirrors > Home > MPE Home > Th. List > grpass | Structured version Visualization version GIF version |
Description: A group operation is associative. (Contributed by NM, 14-Aug-2011.) |
Ref | Expression |
---|---|
grpcl.b | ⊢ 𝐵 = (Base‘𝐺) |
grpcl.p | ⊢ + = (+g‘𝐺) |
Ref | Expression |
---|---|
grpass | ⊢ ((𝐺 ∈ Grp ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵)) → ((𝑋 + 𝑌) + 𝑍) = (𝑋 + (𝑌 + 𝑍))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | grpmnd 18110 | . 2 ⊢ (𝐺 ∈ Grp → 𝐺 ∈ Mnd) | |
2 | grpcl.b | . . 3 ⊢ 𝐵 = (Base‘𝐺) | |
3 | grpcl.p | . . 3 ⊢ + = (+g‘𝐺) | |
4 | 2, 3 | mndass 17920 | . 2 ⊢ ((𝐺 ∈ Mnd ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵)) → ((𝑋 + 𝑌) + 𝑍) = (𝑋 + (𝑌 + 𝑍))) |
5 | 1, 4 | sylan 582 | 1 ⊢ ((𝐺 ∈ Grp ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵)) → ((𝑋 + 𝑌) + 𝑍) = (𝑋 + (𝑌 + 𝑍))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 ∧ w3a 1083 = wceq 1537 ∈ wcel 2114 ‘cfv 6355 (class class class)co 7156 Basecbs 16483 +gcplusg 16565 Mndcmnd 17911 Grpcgrp 18103 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-nul 5210 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-sbc 3773 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4839 df-br 5067 df-iota 6314 df-fv 6363 df-ov 7159 df-sgrp 17901 df-mnd 17912 df-grp 18106 |
This theorem is referenced by: grprcan 18137 grprinv 18153 grpinvid1 18154 grpinvid2 18155 grplcan 18161 grpasscan1 18162 grpasscan2 18163 grplmulf1o 18173 grpinvadd 18177 grpsubadd 18187 grpaddsubass 18189 grpsubsub4 18192 dfgrp3 18198 grplactcnv 18202 imasgrp 18215 mulgaddcomlem 18250 mulgaddcom 18251 mulgdirlem 18258 issubg2 18294 isnsg3 18312 nmzsubg 18317 ssnmz 18318 eqger 18330 eqgcpbl 18334 qusgrp 18335 conjghm 18389 conjnmz 18392 subgga 18430 cntzsubg 18467 sylow1lem2 18724 sylow2blem1 18745 sylow2blem2 18746 sylow2blem3 18747 sylow3lem1 18752 sylow3lem2 18753 lsmass 18795 lsmmod 18801 lsmdisj2 18808 gex2abl 18971 ringcom 19329 lmodass 19649 psrgrp 20178 evpmodpmf1o 20740 ghmcnp 22723 qustgpopn 22728 cnncvsaddassdemo 23767 ogrpaddltbi 30719 ogrpaddltrbid 30721 ogrpinvlt 30724 cyc3genpmlem 30793 archiabllem2c 30824 lfladdass 36224 dvhvaddass 38248 |
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