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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 2175, ax-11 2191, and ax-12 2212 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 2848 | . . 3 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↔ 𝑥 ∈ 𝐵)) |
| 3 | raleqbidv.2 | . . 3 ⊢ (𝜑 → (𝜓 ↔ 𝜒)) | |
| 4 | 2, 3 | anbi12d 641 | . 2 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ∧ 𝜓) ↔ (𝑥 ∈ 𝐵 ∧ 𝜒))) |
| 5 | 4 | rexbidv2 3182 | 1 ⊢ (𝜑 → (∃𝑥 ∈ 𝐴 𝜓 ↔ ∃𝑥 ∈ 𝐵 𝜒)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 = wceq 1560 ∈ wcel 2142 ∃wrex 3086 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-ext 2734 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-ex 1800 df-cleq 2754 df-clel 2837 df-rex 3087 |
| This theorem is referenced by: frd 5604 supeq123d 9396 fpwwe2lem12 10600 vdwpc 17016 ramval 17044 mreexexlemd 17676 iscat 17704 iscatd 17705 catidex 17706 gsumval2a 18719 ismnddef 18770 mndpropd 18793 isgrp 18981 isgrpd2e 18997 cayleyth 19455 psgnfval 19540 iscyg 19919 ltbval 22096 opsrval 22099 scmatval 22564 pmatcollpw3fi1lem2 22847 pmatcollpw3fi1 22848 neiptopnei 23192 is1stc 23501 2ndc1stc 23511 2ndcsep 23519 islly 23528 isnlly 23529 ucnval 24336 imasdsf1olem 24433 met2ndc 24583 evthicc 25521 elmade2 27951 addsval 28055 mulsval 28202 istrkgb 28624 istrkge 28626 istrkgld 28628 legval 28753 ishpg 28932 plngval 28984 lnssplng 28999 iscgra 29003 isinag 29032 isleag 29041 nbgrval 29537 nb3grprlem2 29582 1loopgrvd0 29705 erclwwlkeq 30220 eucrctshift 30445 isplig 30679 nmoofval 30965 erlval 33439 idomsubr 33496 elrsp 33558 1arithidom 33733 dfufd2lem 33745 fldextrspunlsp 33971 extdgfialglem1 33989 constrsuc 34035 reprsuc 34909 istrkg2d 34960 iscvm 35609 cvmlift2lem13 35665 br8 36106 br6 36107 br4 36108 brsegle 36458 hilbert1.1 36504 pibp21 37909 poimirlem26 38145 poimirlem28 38147 poimirlem29 38148 cover2g 38215 isexid 38346 isrngo 38396 isrngod 38397 isgrpda 38454 lshpset 39602 cvrfval 39892 isatl 39923 ishlat1 39976 llnset 40129 lplnset 40153 lvolset 40196 lineset 40362 lcfl7N 42125 lcfrlem8 42173 lcfrlem9 42174 lcf1o 42175 hvmapffval 42382 hvmapfval 42383 hvmapval 42384 prjspval 43185 mzpcompact2lem 43332 eldioph 43339 aomclem8 43638 tfsconcatun 43914 clsk1independent 44622 ovnval 47115 sprval 48085 nnsum3primes4 48410 nnsum3primesprm 48412 nnsum3primesgbe 48414 wtgoldbnnsum4prm 48424 bgoldbnnsum3prm 48426 clnbgrval 48444 gpg3kgrtriex 48711 grlimedgnedg 48753 zlidlring 48856 uzlidlring 48857 lcoop 49033 ldepsnlinc 49130 nnpw2p 49208 lines 49353 iscnrm3r 49569 |
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