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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 2147, ax-11 2163, and ax-12 2185 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 2823 | . . 3 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↔ 𝑥 ∈ 𝐵)) |
| 3 | raleqbidv.2 | . . 3 ⊢ (𝜑 → (𝜓 ↔ 𝜒)) | |
| 4 | 2, 3 | anbi12d 633 | . 2 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ∧ 𝜓) ↔ (𝑥 ∈ 𝐵 ∧ 𝜒))) |
| 5 | 4 | rexbidv2 3158 | 1 ⊢ (𝜑 → (∃𝑥 ∈ 𝐴 𝜓 ↔ ∃𝑥 ∈ 𝐵 𝜒)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 = wceq 1542 ∈ wcel 2114 ∃wrex 3062 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1782 df-cleq 2729 df-clel 2812 df-rex 3063 |
| This theorem is referenced by: frd 5582 supeq123d 9357 fpwwe2lem12 10559 vdwpc 16945 ramval 16973 mreexexlemd 17604 iscat 17632 iscatd 17633 catidex 17634 gsumval2a 18647 ismnddef 18698 mndpropd 18721 isgrp 18909 isgrpd2e 18925 cayleyth 19384 psgnfval 19469 iscyg 19848 ltbval 22034 opsrval 22037 scmatval 22482 pmatcollpw3fi1lem2 22765 pmatcollpw3fi1 22766 neiptopnei 23110 is1stc 23419 2ndc1stc 23429 2ndcsep 23437 islly 23446 isnlly 23447 ucnval 24254 imasdsf1olem 24351 met2ndc 24501 evthicc 25439 elmade2 27867 addsval 27971 mulsval 28118 istrkgb 28540 istrkge 28542 istrkgld 28544 legval 28669 ishpg 28844 iscgra 28894 isinag 28923 isleag 28932 nbgrval 29422 nb3grprlem2 29467 1loopgrvd0 29591 erclwwlkeq 30106 eucrctshift 30331 isplig 30565 nmoofval 30851 erlval 33337 idomsubr 33388 elrsp 33450 1arithidom 33615 dfufd2lem 33627 fldextrspunlsp 33837 extdgfialglem1 33855 constrsuc 33901 reprsuc 34778 istrkg2d 34829 iscvm 35460 cvmlift2lem13 35516 br8 35957 br6 35958 br4 35959 brsegle 36309 hilbert1.1 36355 pibp21 37748 poimirlem26 37984 poimirlem28 37986 poimirlem29 37987 cover2g 38054 isexid 38185 isrngo 38235 isrngod 38236 isgrpda 38293 lshpset 39441 cvrfval 39731 isatl 39762 ishlat1 39815 llnset 39968 lplnset 39992 lvolset 40035 lineset 40201 lcfl7N 41964 lcfrlem8 42012 lcfrlem9 42013 lcf1o 42014 hvmapffval 42221 hvmapfval 42222 hvmapval 42223 prjspval 43053 mzpcompact2lem 43200 eldioph 43207 aomclem8 43510 tfsconcatun 43786 clsk1independent 44494 ovnval 46990 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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