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| Description: Inference adding existential quantifier to both sides of an equivalence. |
| Ref | Expression |
|---|---|
| biex.1 |
|
| Ref | Expression |
|---|---|
| biex |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 19.18 732 |
. 2
| |
| 2 | biex.1 |
. 2
| |
| 3 | 1, 2 | mpg 684 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: bi2ex 734 bi3ex 735 exancom 736 19.29 752 excom13 776 exrot4 778 eeor 795 eqsex 834 19.12vv 960 19.41vv 964 19.41vvv 965 exdistr 967 exdistr2 969 3exdistr 970 4exdistr 971 eeeanv 981 ee4anv 982 sbel2x 995 sb8eu 1017 eu1 1019 eu2 1023 moanim 1051 euanv 1053 2moswap 1064 2exeu 1066 2eu1 1067 exists1 1072 axun 1081 axpow 1082 axinf 1084 axac 1085 clelab 1187 sbabel 1189 birex2 1227 r2ex 1241 r19.29 1295 r19.41v 1302 r19.43 1304 2reuswap 1341 isset 1351 rexv 1358 gencbvex 1372 vtocl2 1379 vtocl3 1380 cla42gv 1399 ceqsrexv 1413 euxfr 1436 zfrep2 1475 zfrep3 1476 zfrep4 1479 zfaus 1480 nvelv 1483 nss 1550 inex1 1697 abn0 1715 pssnel 1752 pwex 1806 snprc 1838 nssss 1866 zfpair 1891 eqvinop 1901 copsexg 1902 eusn 1913 unpr 1930 uniun 1934 uniin 1935 uni0b 1939 uniex 1947 dfiun2 2014 iinss 2025 iunn0 2029 iunxsn 2034 iunxun 2035 opabid 2099 cbvopab2v 2109 unopab 2121 onminex 2275 elxp2 2443 opelxp 2452 cbvop 2473 opelcog 2511 cnvco 2520 cnvuni 2521 dfdm3 2522 dfrn2 2523 dfrn3 2524 dfdm4 2525 eldm2 2528 dmun 2536 dmin 2537 dmuni 2538 dmopab 2539 dmi 2545 elrn2 2563 rnopab 2566 dmco 2570 dmcosseq 2572 dmres 2584 dfima2 2604 dfima3 2605 elima3 2608 imadmrn 2610 imai 2613 imasn 2616 elimasn 2617 intirr 2628 elxp4 2640 elxp5 2641 rnuni 2646 imaiun 2650 coi1 2665 coass 2667 dmco2 2673 dffun2 2674 dffun5 2677 imadif 2714 funimaexg 2715 fcoi1 2765 fcoi2 2766 f11o 2821 fv2 2828 fvopabn 2873 fvresex 2909 isomin 2937 iinon 2948 tfrlem8 2956 dfoprab2 3021 1st2val 3097 ec2 3203 erdmrn 3213 ecdmn0 3217 snec 3232 domen 3284 mapsnen 3334 xpsnen 3339 xpassen 3344 inf0 3457 inf2 3459 inf4 3473 zfinf 3474 tz9.12lem3 3505 scott0 3542 cp 3547 aceq1 3552 aceq0 3553 aceq2 3554 aceq5lem1 3558 aceq5lem2 3559 aceq5lem3 3560 kmlem3 3582 kmlem14 3593 kmlem15 3594 kmlem16 3595 cflem 3700 cf0 3705 axpowndlem3 3745 zfcndrep 3760 zfcndun 3761 zfcndpow 3762 zfcndinf 3764 zfcndac 3765 prnmadd 3894 genpass 3906 1pr 3911 distrlem1pr 3921 ltexprlem1 3936 ltexprlem4 3939 reclem1pr 3950 reclem2pr 3951 suplem1pr 3955 suppsr3 4018 elreal 4044 nnwof 4609 nnwos 4610 infxpidmlem9 4941 osumlem5 5534 |
| 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-gen 677 |
| This theorem depends on definitions: df-bi 128 df-an 198 df-ex 679 |