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| Mirrors > Home > ILE Home > Th. List > opeq12 | Unicode version | ||
| Description: Equality theorem for ordered pairs. (Contributed by NM, 28-May-1995.) |
| Ref | Expression |
|---|---|
| opeq12 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | opeq1 3904 |
. 2
| |
| 2 | opeq2 3905 |
. 2
| |
| 3 | 1, 2 | sylan9eq 2291 |
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-ext 2220 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-v 2823 df-un 3224 df-sn 3715 df-pr 3716 df-op 3718 |
| This theorem is used by: opeq12i 3909 opeq12d 3912 cbvopab 4202 opth 4377 copsex2t 4385 copsex2g 4386 relop 4930 funopg 5411 fsn 5880 fnressn 5901 cbvoprab12 6162 eqopi 6406 f1o2ndf1 6464 tposoprab 6551 brecop 6899 th3q 6914 ecovcom 6916 ecovicom 6917 ecovass 6918 ecoviass 6919 ecovdi 6920 ecovidi 6921 xpf1o 7144 1qec 7755 enq0sym 7799 addnq0mo 7814 mulnq0mo 7815 addnnnq0 7816 mulnnnq0 7817 distrnq0 7826 mulcomnq0 7827 addassnq0 7829 addsrmo 8110 mulsrmo 8111 addsrpr 8112 mulsrpr 8113 axcnre 8248 fsumcnv 12204 fprodcnv 12392 eucalgval2 12831 |
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