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Mirrors > Home > ILE Home > Th. List > exbii | GIF version |
Description: Inference adding existential quantifier to both sides of an equivalence. (Contributed by NM, 24-May-1994.) |
Ref | Expression |
---|---|
exbii.1 | ⊢ (𝜑 ↔ 𝜓) |
Ref | Expression |
---|---|
exbii | ⊢ (∃𝑥𝜑 ↔ ∃𝑥𝜓) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | exbi 1591 | . 2 ⊢ (∀𝑥(𝜑 ↔ 𝜓) → (∃𝑥𝜑 ↔ ∃𝑥𝜓)) | |
2 | exbii.1 | . 2 ⊢ (𝜑 ↔ 𝜓) | |
3 | 1, 2 | mpg 1438 | 1 ⊢ (∃𝑥𝜑 ↔ ∃𝑥𝜓) |
Colors of variables: wff set class |
Syntax hints: ↔ wb 104 ∃wex 1479 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-5 1434 ax-gen 1436 ax-ie1 1480 ax-ie2 1481 ax-4 1497 ax-ial 1521 |
This theorem depends on definitions: df-bi 116 |
This theorem is referenced by: 2exbii 1593 3exbii 1594 exancom 1595 excom13 1676 exrot4 1678 eeor 1682 sbcof2 1797 sbequ8 1834 sbidm 1838 sborv 1877 19.41vv 1890 19.41vvv 1891 19.41vvvv 1892 exdistr 1896 19.42vvv 1899 exdistr2 1901 3exdistr 1902 4exdistr 1903 eean 1918 eeeanv 1920 ee4anv 1921 2sb5 1970 2sb5rf 1976 sbel2x 1985 sbexyz 1990 sbex 1991 exsb 1995 2exsb 1996 sb8eu 2026 sb8euh 2036 eu1 2038 eu2 2057 2moswapdc 2103 2exeu 2105 exists1 2109 clelab 2290 clabel 2291 sbabel 2333 rexbii2 2475 r2exf 2482 nfrexdya 2500 r19.41 2619 r19.43 2622 cbvreuvw 2695 isset 2727 rexv 2739 ceqsex2 2761 ceqsex3v 2763 gencbvex 2767 ceqsrexv 2851 rexab 2883 rexrab2 2888 euxfrdc 2907 euind 2908 reu6 2910 reu3 2911 2reuswapdc 2925 reuind 2926 sbccomlem 3020 rmo2ilem 3035 rexun 3297 reupick3 3402 abn0r 3428 abn0m 3429 rabn0m 3431 rexsns 3609 exsnrex 3612 snprc 3635 euabsn2 3639 reusn 3641 eusn 3644 elunirab 3796 unipr 3797 uniun 3802 uniin 3803 iuncom4 3867 dfiun2g 3892 iunn0m 3920 iunxiun 3941 disjnim 3967 cbvopab2 4050 cbvopab2v 4053 unopab 4055 zfnuleu 4100 0ex 4103 vnex 4107 inex1 4110 intexabim 4125 iinexgm 4127 inuni 4128 unidif0 4140 axpweq 4144 zfpow 4148 axpow2 4149 axpow3 4150 vpwex 4152 zfpair2 4182 mss 4198 exss 4199 opm 4206 eqvinop 4215 copsexg 4216 opabm 4252 iunopab 4253 zfun 4406 uniex2 4408 uniuni 4423 rexxfrd 4435 dtruex 4530 zfinf2 4560 elxp2 4616 opeliunxp 4653 xpiundi 4656 xpiundir 4657 elvvv 4661 eliunxp 4737 rexiunxp 4740 relop 4748 elco 4764 opelco2g 4766 cnvco 4783 cnvuni 4784 dfdm3 4785 dfrn2 4786 dfrn3 4787 elrng 4789 dfdm4 4790 eldm2g 4794 dmun 4805 dmin 4806 dmiun 4807 dmuni 4808 dmopab 4809 dmi 4813 dmmrnm 4817 elrn 4841 rnopab 4845 dmcosseq 4869 dmres 4899 elres 4914 elsnres 4915 dfima2 4942 elima3 4947 imadmrn 4950 imai 4954 args 4967 rniun 5008 ssrnres 5040 dmsnm 5063 dmsnopg 5069 elxp4 5085 elxp5 5086 cnvresima 5087 mptpreima 5091 dfco2 5097 coundi 5099 coundir 5100 resco 5102 imaco 5103 rnco 5104 coiun 5107 coi1 5113 coass 5116 xpcom 5144 dffun2 5192 imadif 5262 imainlem 5263 funimaexglem 5265 fun11iun 5447 f11o 5459 brprcneu 5473 nfvres 5513 fndmin 5586 abrexco 5721 imaiun 5722 dfoprab2 5880 cbvoprab2 5906 rexrnmpo 5948 opabex3d 6081 opabex3 6082 abexssex 6085 abexex 6086 oprabrexex2 6090 releldm2 6145 dfopab2 6149 dfoprab3s 6150 cnvoprab 6193 brtpos2 6210 tfr1onlemaccex 6307 tfrcllembxssdm 6315 tfrcllemaccex 6320 domen 6708 mapsnen 6768 xpsnen 6778 xpcomco 6783 xpassen 6787 fimax2gtri 6858 supelti 6958 cc1 7197 subhalfnqq 7346 ltbtwnnq 7348 prnmaxl 7420 prnminu 7421 prarloc 7435 genpdflem 7439 genpassl 7456 genpassu 7457 ltexprlemm 7532 2rexuz 9511 seq3f1olemp 10427 cbvsum 11287 cbvprod 11485 inffinp1 12299 ctiunctal 12311 unct 12312 isbasis2g 12584 tgval2 12592 ntreq0 12673 lmff 12790 metrest 13047 bj-axempty 13610 bj-axempty2 13611 bj-vprc 13613 bdinex1 13616 bj-zfpair2 13627 bj-uniex2 13633 bj-d0clsepcl 13642 |
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