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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 2182, ax-11 2198, and ax-12 2219 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 2855 | . . 3 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↔ 𝑥 ∈ 𝐵)) |
| 3 | raleqbidv.2 | . . 3 ⊢ (𝜑 → (𝜓 ↔ 𝜒)) | |
| 4 | 2, 3 | anbi12d 643 | . 2 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ∧ 𝜓) ↔ (𝑥 ∈ 𝐵 ∧ 𝜒))) |
| 5 | 4 | rexbidv2 3191 | 1 ⊢ (𝜑 → (∃𝑥 ∈ 𝐴 𝜓 ↔ ∃𝑥 ∈ 𝐵 𝜒)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 = wceq 1567 ∈ wcel 2149 ∃wrex 3095 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-ext 2741 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-ex 1807 df-cleq 2761 df-clel 2844 df-rex 3096 |
| This theorem is referenced by: frd 5619 supeq123d 9409 fpwwe2lem12 10626 vdwpc 17039 ramval 17067 mreexexlemd 17699 iscat 17727 iscatd 17728 catidex 17729 gsumval2a 18742 ismnddef 18793 mndpropd 18816 isgrp 19005 isgrpd2e 19021 cayleyth 19484 psgnfval 19569 iscyg 19948 ltbval 22162 opsrval 22165 scmatval 22629 pmatcollpw3fi1lem2 22912 pmatcollpw3fi1 22913 neiptopnei 23257 is1stc 23566 2ndc1stc 23576 2ndcsep 23584 islly 23593 isnlly 23594 ucnval 24401 imasdsf1olem 24498 met2ndc 24648 evthicc 25586 elmade2 28016 addsval 28120 mulsval 28267 istrkgb 28689 istrkge 28691 istrkgld 28693 legval 28818 ishpg 28999 plngval 29016 lnssplng 29031 iscgra 29076 isinag 29109 isleag 29118 nbgrval 29626 nb3grprlem2 29671 1loopgrvd0 29794 erclwwlkeq 30309 eucrctshift 30534 isplig 30768 nmoofval 31054 erlval 33518 idomsubr 33572 elrsp 33628 1arithidom 33771 dfufd2lem 33783 fldextrspunlsp 34008 extdgfialglem1 34026 constrsuc 34072 reprsuc 34946 istrkg2d 34997 iscvm 35649 cvmlift2lem13 35705 br8 36146 br6 36147 br4 36148 brsegle 36498 hilbert1.1 36544 pibp21 37948 poimirlem26 38184 poimirlem28 38186 poimirlem29 38187 cover2g 38254 isexid 38385 isrngo 38435 isrngod 38436 isgrpda 38493 lshpset 39641 cvrfval 39931 isatl 39962 ishlat1 40015 llnset 40168 lplnset 40192 lvolset 40235 lineset 40401 lcfl7N 42164 lcfrlem8 42212 lcfrlem9 42213 lcf1o 42214 hvmapffval 42421 hvmapfval 42422 hvmapval 42423 prjspval 43226 mzpcompact2lem 43373 eldioph 43380 aomclem8 43679 tfsconcatun 43955 clsk1independent 44663 ovnval 47146 sprval 48116 nnsum3primes4 48441 nnsum3primesprm 48443 nnsum3primesgbe 48445 wtgoldbnnsum4prm 48455 bgoldbnnsum3prm 48457 clnbgrval 48475 gpg3kgrtriex 48742 grlimedgnedg 48784 zlidlring 48887 uzlidlring 48888 lcoop 49075 ldepsnlinc 49172 nnpw2p 49250 lines 49395 iscnrm3r 49610 |
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