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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 2184 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 2822 | . . 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 3156 | 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 3060 |
| 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 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1781 df-cleq 2728 df-clel 2811 df-rex 3061 |
| This theorem is referenced by: frd 5581 supeq123d 9353 fpwwe2lem12 10553 vdwpc 16908 ramval 16936 mreexexlemd 17567 iscat 17595 iscatd 17596 catidex 17597 gsumval2a 18610 ismnddef 18661 mndpropd 18684 isgrp 18869 isgrpd2e 18885 cayleyth 19344 psgnfval 19429 iscyg 19808 ltbval 21998 opsrval 22001 scmatval 22448 pmatcollpw3fi1lem2 22731 pmatcollpw3fi1 22732 neiptopnei 23076 is1stc 23385 2ndc1stc 23395 2ndcsep 23403 islly 23412 isnlly 23413 ucnval 24220 imasdsf1olem 24317 met2ndc 24467 evthicc 25416 elmade2 27854 addsval 27958 mulsval 28105 istrkgb 28527 istrkge 28529 istrkgld 28531 legval 28656 ishpg 28831 iscgra 28881 isinag 28910 isleag 28919 nbgrval 29409 nb3grprlem2 29454 1loopgrvd0 29578 erclwwlkeq 30093 eucrctshift 30318 isplig 30551 nmoofval 30837 erlval 33340 idomsubr 33391 elrsp 33453 1arithidom 33618 dfufd2lem 33630 fldextrspunlsp 33831 extdgfialglem1 33849 constrsuc 33895 reprsuc 34772 istrkg2d 34823 iscvm 35453 cvmlift2lem13 35509 br8 35950 br6 35951 br4 35952 brsegle 36302 hilbert1.1 36348 pibp21 37620 poimirlem26 37847 poimirlem28 37849 poimirlem29 37850 cover2g 37917 isexid 38048 isrngo 38098 isrngod 38099 isgrpda 38156 lshpset 39238 cvrfval 39528 isatl 39559 ishlat1 39612 llnset 39765 lplnset 39789 lvolset 39832 lineset 39998 lcfl7N 41761 lcfrlem8 41809 lcfrlem9 41810 lcf1o 41811 hvmapffval 42018 hvmapfval 42019 hvmapval 42020 prjspval 42846 mzpcompact2lem 42993 eldioph 43000 aomclem8 43303 tfsconcatun 43579 clsk1independent 44287 ovnval 46785 sprval 47725 nnsum3primes4 48034 nnsum3primesprm 48036 nnsum3primesgbe 48038 wtgoldbnnsum4prm 48048 bgoldbnnsum3prm 48050 clnbgrval 48068 gpg3kgrtriex 48335 grlimedgnedg 48377 zlidlring 48480 uzlidlring 48481 lcoop 48657 ldepsnlinc 48754 nnpw2p 48832 lines 48977 iscnrm3r 49193 |
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