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| Mirrors > Home > ILE Home > Th. List > grpass | Unicode version | ||
| Description: A group operation is associative. (Contributed by NM, 14-Aug-2011.) |
| Ref | Expression |
|---|---|
| grpcl.b |
|
| grpcl.p |
|
| Ref | Expression |
|---|---|
| grpass |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | grpmnd 13814 |
. 2
| |
| 2 | grpcl.b |
. . 3
| |
| 3 | grpcl.p |
. . 3
| |
| 4 | 2, 3 | mndass 13739 |
. 2
|
| 5 | 1, 4 | sylan 283 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on 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 4249 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-cnex 8270 ax-resscn 8271 ax-1re 8273 ax-addrcl 8276 |
| This proof 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 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-br 4131 df-opab 4193 df-mpt 4194 df-id 4438 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-rn 4785 df-res 4786 df-iota 5337 df-fun 5379 df-fn 5380 df-fv 5385 df-ov 6088 df-inn 9306 df-2 9364 df-ndx 13357 df-slot 13358 df-base 13360 df-plusg 13446 df-sgrp 13719 df-mnd 13732 df-grp 13810 |
| This theorem is used by: grpassd 13819 grprcan 13844 grprinv 13858 grpinvid1 13859 grpinvid2 13860 grpressid 13868 grplcan 13869 grpasscan1 13870 grpasscan2 13871 grplmulf1o 13881 grpinvadd 13885 grpsubadd 13895 grpaddsubass 13897 grpsubsub4 13900 dfgrp3m 13906 grplactcnv 13909 imasgrp 13916 mulgaddcomlem 13950 mulgaddcom 13951 mulgdirlem 13958 issubg2m 13994 isnsg3 14012 nmzsubg 14015 ssnmz 14016 eqger 14029 eqgcpbl 14033 qusgrp 14037 conjghm 14081 conjnmz 14084 ringcom 14338 lmodass 14641 |
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