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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 2146, ax-11 2162, and ax-12 2182 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 2820 | . . 3 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↔ 𝑥 ∈ 𝐵)) |
| 3 | raleqbidv.2 | . . 3 ⊢ (𝜑 → (𝜓 ↔ 𝜒)) | |
| 4 | 2, 3 | anbi12d 632 | . 2 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ∧ 𝜓) ↔ (𝑥 ∈ 𝐵 ∧ 𝜒))) |
| 5 | 4 | rexbidv2 3154 | 1 ⊢ (𝜑 → (∃𝑥 ∈ 𝐴 𝜓 ↔ ∃𝑥 ∈ 𝐵 𝜒)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 = wceq 1541 ∈ wcel 2113 ∃wrex 3058 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-ext 2706 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1781 df-cleq 2726 df-clel 2809 df-rex 3059 |
| This theorem is referenced by: frd 5579 supeq123d 9351 fpwwe2lem12 10551 vdwpc 16906 ramval 16934 mreexexlemd 17565 iscat 17593 iscatd 17594 catidex 17595 gsumval2a 18608 ismnddef 18659 mndpropd 18682 isgrp 18867 isgrpd2e 18883 cayleyth 19342 psgnfval 19427 iscyg 19806 ltbval 21996 opsrval 21999 scmatval 22446 pmatcollpw3fi1lem2 22729 pmatcollpw3fi1 22730 neiptopnei 23074 is1stc 23383 2ndc1stc 23393 2ndcsep 23401 islly 23410 isnlly 23411 ucnval 24218 imasdsf1olem 24315 met2ndc 24465 evthicc 25414 elmade2 27840 addsval 27932 mulsval 28078 istrkgb 28476 istrkge 28478 istrkgld 28480 legval 28605 ishpg 28780 iscgra 28830 isinag 28859 isleag 28868 nbgrval 29358 nb3grprlem2 29403 1loopgrvd0 29527 erclwwlkeq 30042 eucrctshift 30267 isplig 30500 nmoofval 30786 erlval 33289 idomsubr 33340 elrsp 33402 1arithidom 33567 dfufd2lem 33579 fldextrspunlsp 33780 extdgfialglem1 33798 constrsuc 33844 reprsuc 34721 istrkg2d 34772 iscvm 35402 cvmlift2lem13 35458 br8 35899 br6 35900 br4 35901 brsegle 36251 hilbert1.1 36297 pibp21 37559 poimirlem26 37786 poimirlem28 37788 poimirlem29 37789 cover2g 37856 isexid 37987 isrngo 38037 isrngod 38038 isgrpda 38095 lshpset 39177 cvrfval 39467 isatl 39498 ishlat1 39551 llnset 39704 lplnset 39728 lvolset 39771 lineset 39937 lcfl7N 41700 lcfrlem8 41748 lcfrlem9 41749 lcf1o 41750 hvmapffval 41957 hvmapfval 41958 hvmapval 41959 prjspval 42788 mzpcompact2lem 42935 eldioph 42942 aomclem8 43245 tfsconcatun 43521 clsk1independent 44229 ovnval 46727 sprval 47667 nnsum3primes4 47976 nnsum3primesprm 47978 nnsum3primesgbe 47980 wtgoldbnnsum4prm 47990 bgoldbnnsum3prm 47992 clnbgrval 48010 gpg3kgrtriex 48277 grlimedgnedg 48319 zlidlring 48422 uzlidlring 48423 lcoop 48599 ldepsnlinc 48696 nnpw2p 48774 lines 48919 iscnrm3r 49135 |
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