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| Description: Equality theorem for ordered pairs. |
| Ref | Expression |
|---|---|
| opeq2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | preq2 2449 |
. . 3
| |
| 2 | preq2 2449 |
. . 3
| |
| 3 | 1, 2 | syl 10 |
. 2
|
| 4 | df-op 2416 |
. 2
| |
| 5 | df-op 2416 |
. 2
| |
| 6 | 3, 4, 5 | 3eqtr4g 1531 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: opeq12 2489 opeq2i 2491 opeq2d 2494 breq2 2623 cbvopab2v 2677 opthg 2788 opthgg 2789 eqvinop 2791 moop2 2801 opabid 2810 dfid3 2836 opelxpg 3216 opabid2 3267 opelcog 3290 dfdmf 3306 opeldm 3314 dfrnf 3348 elrn2 3349 opelresg 3374 iss 3397 elimasng 3427 intirr 3441 cnvopab 3445 elxp4 3453 elxp5 3454 funopg 3547 fnopabg 3615 fcoi2 3646 tz6.12f 3738 funopfvg 3752 funfvop 3803 fsn 3834 tfrlem11 3921 opreq2 3969 op2ndg 4088 2ndconst 4097 mapsnen 4429 xpsnen 4435 xpassen 4441 aceq3lem 4732 elreal 5250 seq1val 6312 dfseq0 6563 vcoprne 8198 isnvlem 8229 nvi 8233 isded 10669 dedi 10670 cmppfd 10678 iscat 10687 cati 10688 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 962 ax-gen 963 ax-8 964 ax-10 966 ax-12 968 ax-17 971 ax-4 973 ax-5o 975 ax-6o 978 ax-9o 1123 ax-10o 1140 ax-16 1210 ax-11o 1218 ax-ext 1459 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 981 df-sb 1172 df-clab 1464 df-cleq 1469 df-clel 1472 df-v 1812 df-un 2050 df-sn 2412 df-pr 2413 df-op 2416 |