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| Mirrors > Home > ILE Home > Th. List > opeq12 | GIF version | ||
| Description: Equality theorem for ordered pairs. (Contributed by NM, 28-May-1995.) |
| Ref | Expression |
|---|---|
| opeq12 | ⊢ ((𝐴 = 𝐶 ∧ 𝐵 = 𝐷) → 〈𝐴, 𝐵〉 = 〈𝐶, 𝐷〉) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | opeq1 3904 | . 2 ⊢ (𝐴 = 𝐶 → 〈𝐴, 𝐵〉 = 〈𝐶, 𝐵〉) | |
| 2 | opeq2 3905 | . 2 ⊢ (𝐵 = 𝐷 → 〈𝐶, 𝐵〉 = 〈𝐶, 𝐷〉) | |
| 3 | 1, 2 | sylan9eq 2291 | 1 ⊢ ((𝐴 = 𝐶 ∧ 𝐵 = 𝐷) → 〈𝐴, 𝐵〉 = 〈𝐶, 𝐷〉) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 = wceq 1402 〈cop 3712 |
| 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 4203 opth 4379 copsex2t 4387 copsex2g 4388 relop 4932 funopg 5414 fsn 5883 fnressn 5904 cbvoprab12 6165 eqopi 6410 f1o2ndf1 6468 tposoprab 6556 brecop 6904 th3q 6919 ecovcom 6921 ecovicom 6922 ecovass 6923 ecoviass 6924 ecovdi 6925 ecovidi 6926 xpf1o 7150 1qec 7761 enq0sym 7805 addnq0mo 7820 mulnq0mo 7821 addnnnq0 7822 mulnnnq0 7823 distrnq0 7832 mulcomnq0 7833 addassnq0 7835 addsrmo 8116 mulsrmo 8117 addsrpr 8118 mulsrpr 8119 axcnre 8254 fsumcnv 12228 fprodcnv 12416 eucalgval2 12855 |
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