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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 13766 |
. 2
| |
| 2 | grpcl.b |
. . 3
| |
| 3 | grpcl.p |
. . 3
| |
| 4 | 2, 3 | mndass 13689 |
. 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 2207 ax-14 2208 ax-ext 2216 ax-sep 4233 ax-pow 4292 ax-pr 4327 ax-un 4559 ax-cnex 8234 ax-resscn 8235 ax-1re 8237 ax-addrcl 8240 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-rab 2531 df-v 2817 df-sbc 3046 df-un 3218 df-in 3220 df-ss 3227 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-int 3955 df-br 4115 df-opab 4177 df-mpt 4178 df-id 4419 df-xp 4760 df-rel 4761 df-cnv 4762 df-co 4763 df-dm 4764 df-rn 4765 df-res 4766 df-iota 5317 df-fun 5359 df-fn 5360 df-fv 5365 df-ov 6061 df-inn 9258 df-2 9316 df-ndx 13303 df-slot 13304 df-base 13306 df-plusg 13391 df-sgrp 13669 df-mnd 13682 df-grp 13762 |
| This theorem is referenced by: grpassd 13771 grprcan 13796 grprinv 13810 grpinvid1 13811 grpinvid2 13812 grpressid 13820 grplcan 13821 grpasscan1 13822 grpasscan2 13823 grplmulf1o 13833 grpinvadd 13837 grpsubadd 13847 grpaddsubass 13849 grpsubsub4 13852 dfgrp3m 13858 grplactcnv 13861 imasgrp 13868 mulgaddcomlem 13902 mulgaddcom 13903 mulgdirlem 13910 issubg2m 13946 isnsg3 13964 nmzsubg 13967 ssnmz 13968 eqger 13981 eqgcpbl 13985 qusgrp 13989 conjghm 14033 conjnmz 14036 ringcom 14278 lmodass 14581 |
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