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Mirrors > Home > ILE Home > Th. List > eceq1 | Unicode version |
Description: Equality theorem for equivalence class. (Contributed by NM, 23-Jul-1995.) |
Ref | Expression |
---|---|
eceq1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sneq 3386 | . . 3 | |
2 | 1 | imaeq2d 4668 | . 2 |
3 | df-ec 6108 | . 2 | |
4 | df-ec 6108 | . 2 | |
5 | 2, 3, 4 | 3eqtr4g 2097 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wceq 1243 csn 3375 cima 4348 cec 6104 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-bndl 1399 ax-4 1400 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 |
This theorem depends on definitions: df-bi 110 df-3an 887 df-tru 1246 df-nf 1350 df-sb 1646 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-v 2559 df-un 2922 df-in 2924 df-ss 2931 df-sn 3381 df-pr 3382 df-op 3384 df-br 3765 df-opab 3819 df-xp 4351 df-cnv 4353 df-dm 4355 df-rn 4356 df-res 4357 df-ima 4358 df-ec 6108 |
This theorem is referenced by: eceq1d 6142 ecelqsg 6159 snec 6167 qliftfun 6188 qliftfuns 6190 qliftval 6192 ecoptocl 6193 eroveu 6197 th3qlem1 6208 th3qlem2 6209 th3q 6211 dmaddpqlem 6475 nqpi 6476 1qec 6486 nqnq0 6539 nq0nn 6540 mulnnnq0 6548 addpinq1 6562 caucvgsrlemfv 6875 caucvgsr 6886 pitonnlem1 6921 axcaucvg 6974 |
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