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| Mirrors > Home > MPE Home > Th. List > rexeqbidv | Structured version Visualization version GIF version | ||
| Description: Equality deduction for restricted universal quantifier. (Contributed by NM, 6-Nov-2007.) Remove usage of ax-10 2152, ax-11 2168, and ax-12 2189 and reduce distinct variable conditions. (Revised by Steven Nguyen, 30-Apr-2023.) |
| Ref | Expression |
|---|---|
| raleqbidv.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| raleqbidv.2 | ⊢ (𝜑 → (𝜓 ↔ 𝜒)) |
| Ref | Expression |
|---|---|
| rexeqbidv | ⊢ (𝜑 → (∃𝑥 ∈ 𝐴 𝜓 ↔ ∃𝑥 ∈ 𝐵 𝜒)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | raleqbidv.1 | . . . 4 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 2 | 1 | eleq2d 2825 | . . 3 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↔ 𝑥 ∈ 𝐵)) |
| 3 | raleqbidv.2 | . . 3 ⊢ (𝜑 → (𝜓 ↔ 𝜒)) | |
| 4 | 2, 3 | anbi12d 638 | . 2 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ∧ 𝜓) ↔ (𝑥 ∈ 𝐵 ∧ 𝜒))) |
| 5 | 4 | rexbidv2 3159 | 1 ⊢ (𝜑 → (∃𝑥 ∈ 𝐴 𝜓 ↔ ∃𝑥 ∈ 𝐵 𝜒)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 207 = wceq 1547 ∈ wcel 2119 ∃wrex 3063 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2711 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-ex 1787 df-cleq 2731 df-clel 2814 df-rex 3064 |
| This theorem is referenced by: frd 5575 supeq123d 9353 fpwwe2lem12 10556 vdwpc 16942 ramval 16970 mreexexlemd 17601 iscat 17629 iscatd 17630 catidex 17631 gsumval2a 18644 ismnddef 18695 mndpropd 18718 isgrp 18906 isgrpd2e 18922 cayleyth 19381 psgnfval 19466 iscyg 19845 ltbval 22019 opsrval 22022 scmatval 22487 pmatcollpw3fi1lem2 22770 pmatcollpw3fi1 22771 neiptopnei 23115 is1stc 23424 2ndc1stc 23434 2ndcsep 23442 islly 23451 isnlly 23452 ucnval 24259 imasdsf1olem 24356 met2ndc 24506 evthicc 25444 elmade2 27868 addsval 27972 mulsval 28119 istrkgb 28541 istrkge 28543 istrkgld 28545 legval 28670 ishpg 28845 iscgra 28895 isinag 28924 isleag 28933 nbgrval 29423 nb3grprlem2 29468 1loopgrvd0 29591 erclwwlkeq 30106 eucrctshift 30331 isplig 30565 nmoofval 30851 erlval 33339 idomsubr 33393 elrsp 33455 1arithidom 33620 dfufd2lem 33632 fldextrspunlsp 33858 extdgfialglem1 33876 constrsuc 33922 reprsuc 34799 istrkg2d 34850 iscvm 35487 cvmlift2lem13 35543 br8 35984 br6 35985 br4 35986 brsegle 36336 hilbert1.1 36382 pibp21 37777 poimirlem26 38013 poimirlem28 38015 poimirlem29 38016 cover2g 38083 isexid 38214 isrngo 38264 isrngod 38265 isgrpda 38322 lshpset 39470 cvrfval 39760 isatl 39791 ishlat1 39844 llnset 39997 lplnset 40021 lvolset 40064 lineset 40230 lcfl7N 41993 lcfrlem8 42041 lcfrlem9 42042 lcf1o 42043 hvmapffval 42250 hvmapfval 42251 hvmapval 42252 prjspval 43053 mzpcompact2lem 43200 eldioph 43207 aomclem8 43506 tfsconcatun 43782 clsk1independent 44490 ovnval 46984 sprval 47954 nnsum3primes4 48279 nnsum3primesprm 48281 nnsum3primesgbe 48283 wtgoldbnnsum4prm 48293 bgoldbnnsum3prm 48295 clnbgrval 48313 gpg3kgrtriex 48580 grlimedgnedg 48622 zlidlring 48725 uzlidlring 48726 lcoop 48902 ldepsnlinc 48999 nnpw2p 49077 lines 49222 iscnrm3r 49438 |
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