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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 5616 supeq123d 9406 fpwwe2lem12 10623 vdwpc 17036 ramval 17064 mreexexlemd 17696 iscat 17724 iscatd 17725 catidex 17726 gsumval2a 18739 ismnddef 18790 mndpropd 18813 isgrp 19002 isgrpd2e 19018 cayleyth 19481 psgnfval 19566 iscyg 19945 ltbval 22159 opsrval 22162 scmatval 22626 pmatcollpw3fi1lem2 22909 pmatcollpw3fi1 22910 neiptopnei 23254 is1stc 23563 2ndc1stc 23573 2ndcsep 23581 islly 23590 isnlly 23591 ucnval 24398 imasdsf1olem 24495 met2ndc 24645 evthicc 25583 elmade2 28013 addsval 28117 mulsval 28264 istrkgb 28686 istrkge 28688 istrkgld 28690 legval 28815 ishpg 28996 plngval 29013 lnssplng 29028 iscgra 29073 isinag 29106 isleag 29115 nbgrval 29623 nb3grprlem2 29668 1loopgrvd0 29791 erclwwlkeq 30306 eucrctshift 30531 isplig 30765 nmoofval 31051 erlval 33515 idomsubr 33569 elrsp 33625 1arithidom 33768 dfufd2lem 33780 fldextrspunlsp 34005 extdgfialglem1 34023 constrsuc 34069 reprsuc 34943 istrkg2d 34994 iscvm 35646 cvmlift2lem13 35702 br8 36143 br6 36144 br4 36145 brsegle 36495 hilbert1.1 36541 pibp21 37944 poimirlem26 38180 poimirlem28 38182 poimirlem29 38183 cover2g 38250 isexid 38381 isrngo 38431 isrngod 38432 isgrpda 38489 lshpset 39637 cvrfval 39927 isatl 39958 ishlat1 40011 llnset 40164 lplnset 40188 lvolset 40231 lineset 40397 lcfl7N 42160 lcfrlem8 42208 lcfrlem9 42209 lcf1o 42210 hvmapffval 42417 hvmapfval 42418 hvmapval 42419 prjspval 43220 mzpcompact2lem 43367 eldioph 43374 aomclem8 43673 tfsconcatun 43949 clsk1independent 44657 ovnval 47140 sprval 48110 nnsum3primes4 48435 nnsum3primesprm 48437 nnsum3primesgbe 48439 wtgoldbnnsum4prm 48449 bgoldbnnsum3prm 48451 clnbgrval 48469 gpg3kgrtriex 48736 grlimedgnedg 48778 zlidlring 48881 uzlidlring 48882 lcoop 49069 ldepsnlinc 49166 nnpw2p 49244 lines 49389 iscnrm3r 49604 |
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