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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 13653 |
. 2
| |
| 2 | grpcl.b |
. . 3
| |
| 3 | grpcl.p |
. . 3
| |
| 4 | 2, 3 | mndass 13570 |
. 2
|
| 5 | 1, 4 | sylan 283 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-cnex 8166 ax-resscn 8167 ax-1re 8169 ax-addrcl 8172 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ral 2516 df-rex 2517 df-rab 2520 df-v 2805 df-sbc 3033 df-un 3205 df-in 3207 df-ss 3214 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-br 4094 df-opab 4156 df-mpt 4157 df-id 4396 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-iota 5293 df-fun 5335 df-fn 5336 df-fv 5341 df-ov 6031 df-inn 9186 df-2 9244 df-ndx 13148 df-slot 13149 df-base 13151 df-plusg 13236 df-sgrp 13548 df-mnd 13563 df-grp 13649 |
| This theorem is referenced by: grpassd 13658 grprcan 13683 grprinv 13697 grpinvid1 13698 grpinvid2 13699 grpressid 13707 grplcan 13708 grpasscan1 13709 grpasscan2 13710 grplmulf1o 13720 grpinvadd 13724 grpsubadd 13734 grpaddsubass 13736 grpsubsub4 13739 dfgrp3m 13745 grplactcnv 13748 imasgrp 13761 mulgaddcomlem 13795 mulgaddcom 13796 mulgdirlem 13803 issubg2m 13839 isnsg3 13857 nmzsubg 13860 ssnmz 13861 eqger 13874 eqgcpbl 13878 qusgrp 13882 conjghm 13926 conjnmz 13929 ringcom 14108 lmodass 14382 |
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