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| Description: Equality theorem for ordered pairs. |
| Ref | Expression |
|---|---|
| opeq2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | preq2 2510 |
. . 3
| |
| 2 | preq2 2510 |
. . 3
| |
| 3 | 1, 2 | syl 10 |
. 2
|
| 4 | df-op 2474 |
. 2
| |
| 5 | df-op 2474 |
. 2
| |
| 6 | 3, 4, 5 | 3eqtr4g 1574 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: opeq12 2554 opeq2i 2556 opeq2d 2559 breq2 2696 cbvopab2v 2751 opthg 2864 opthgg 2865 eqvinop 2867 moop2 2878 opabid 2887 dfid3 2914 opelxpg 3299 opabid2 3360 opelco2g 3380 dfdmf 3397 opeldm 3405 dfrnf 3435 elrn2 3436 opelresg 3461 iss 3487 elimasng 3519 intirr 3533 cnvopab 3537 elxp4 3585 elxp5 3586 funopg 3652 fnopabg 3722 fcoi2 3753 tz6.12f 3849 funopfvg 3863 funfvop 3917 fsn 3948 opreq2 4027 op2ndg 4149 fsplit 4204 tfrlem11 4222 mapsnen 4570 xpsnen 4576 xpassen 4582 aceq3lem 4878 elreal 5404 seq1val 6677 dfseq0 6758 drngi 8408 vcoprne 8445 isnvlem 8476 nvi 8480 ref3w 10772 prj1 10809 isdivrng 10968 issubspt 11059 subspemp2 11061 stoig 11064 isded 11190 dedi 11191 cmppfd 11199 dmrngcmp 11205 iscat 11208 cati 11209 iepiclem 11278 filnetlem1 11763 filnetlem2 11764 filnetlem3 11765 filnetlem4 11766 filnetlem5 11767 opabex3 11806 oprabopabf 11807 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 998 ax-gen 999 ax-8 1000 ax-10 1002 ax-12 1004 ax-17 1007 ax-4 1009 ax-5o 1011 ax-6o 1014 ax-9o 1159 ax-10o 1177 ax-16 1247 ax-11o 1255 ax-ext 1500 |
| This theorem depends on definitions: df-bi 145 df-or 222 df-an 223 df-ex 1017 df-sb 1209 df-clab 1506 df-cleq 1511 df-clel 1514 df-v 1858 df-un 2102 df-sn 2470 df-pr 2471 df-op 2474 |