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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 13872 |
. 2
| |
| 2 | grpcl.b |
. . 3
| |
| 3 | grpcl.p |
. . 3
| |
| 4 | 2, 3 | mndass 13797 |
. 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 4251 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-cnex 8277 ax-resscn 8278 ax-1re 8280 ax-addrcl 8283 |
| 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 4132 df-opab 4194 df-mpt 4195 df-id 4440 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-rn 4787 df-res 4788 df-iota 5340 df-fun 5382 df-fn 5383 df-fv 5388 df-ov 6091 df-inn 9315 df-2 9373 df-ndx 13414 df-slot 13415 df-base 13417 df-plusg 13504 df-sgrp 13777 df-mnd 13790 df-grp 13868 |
| This theorem is used by: grpassd 13877 grprcan 13902 grprinv 13916 grpinvid1 13917 grpinvid2 13918 grpressid 13926 grplcan 13927 grpasscan1 13928 grpasscan2 13929 grplmulf1o 13939 grpinvadd 13943 grpsubadd 13953 grpaddsubass 13955 grpsubsub4 13958 dfgrp3m 13964 grplactcnv 13967 imasgrp 13974 mulgaddcomlem 14008 mulgaddcom 14009 mulgdirlem 14016 issubg2m 14052 isnsg3 14070 nmzsubg 14073 ssnmz 14074 eqger 14087 eqgcpbl 14091 qusgrp 14095 conjghm 14139 conjnmz 14142 cntzsubg 14172 ringcom 14444 lmodass 14749 |
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