| Metamath Proof Explorer |
< Previous
Next >
Related theorems GIF version |
| Description: Equality theorem for ordered pairs. |
| Ref | Expression |
|---|---|
| opeq2 | ⊢ (A = B → 〈C, A〉 = 〈C, B〉) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | preq2 1871 | . . 3 ⊢ (A = B → {C, A} = {C, B}) | |
| 2 | preq2 1871 | . . 3 ⊢ ({C, A} = {C, B} → {{C}, {C, A}} = {{C}, {C, B}}) | |
| 3 | 1, 2 | syl 12 | . 2 ⊢ (A = B → {{C}, {C, A}} = {{C}, {C, B}}) |
| 4 | df-op 1815 | . 2 ⊢ 〈C, A〉 = {{C}, {C, A}} | |
| 5 | df-op 1815 | . 2 ⊢ 〈C, B〉 = {{C}, {C, B}} | |
| 6 | 3, 4, 5 | 3eqtr4g 1147 | 1 ⊢ (A = B → 〈C, A〉 = 〈C, B〉) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 = wceq 1091 {csn 1808 {cpr 1809 〈cop 1810 |
| This theorem is referenced by: opeq12 1878 opthg 1899 eqvinop 1901 moop2 1910 breq2 2066 opabid 2099 cbvopab2v 2109 opelxpg 2454 opelcog 2511 dfdmf 2526 opeldm 2534 dfrnf 2561 elrn 2562 iss 2599 intirr 2628 cnvopab 2632 elxp4 2640 elxp5 2641 fnopabg 2745 fcoi2 2766 tz6.12f 2844 funopfvg 2854 funopfv 2886 fsn 2895 fnressn 2897 fressnfv 2898 tfrlem11 2959 opreq2 3007 elrnoprab 3054 fundmen 3333 mapsnen 3334 xpsnen 3339 xpassen 3344 xpmapenlem2 3392 aceq3lem 3555 recmulpq 3864 elreal 4044 addresr 4050 seqval 4665 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-16 922 ax-17 925 ax-ext 1074 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-ex 679 df-sb 853 df-clab 1093 df-cleq 1097 df-clel 1099 df-v 1349 df-un 1490 df-sn 1811 df-pr 1812 df-op 1815 |