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| Mirrors > Home > ILE Home > Th. List > reeanv | GIF version | ||
| Description: Rearrange existential quantifiers. (Contributed by NM, 9-May-1999.) |
| Ref | Expression |
|---|---|
| reeanv | ⊢ (∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐵 (𝜑 ∧ 𝜓) ↔ (∃𝑥 ∈ 𝐴 𝜑 ∧ ∃𝑦 ∈ 𝐵 𝜓)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nfv 1581 | . 2 ⊢ Ⅎ𝑦𝜑 | |
| 2 | nfv 1581 | . 2 ⊢ Ⅎ𝑥𝜓 | |
| 3 | 1, 2 | reean 2720 | 1 ⊢ (∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐵 (𝜑 ∧ 𝜓) ↔ (∃𝑥 ∈ 𝐴 𝜑 ∧ ∃𝑦 ∈ 𝐵 𝜓)) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∧ wa 104 ↔ wb 105 ∃wrex 2529 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-nf 1514 df-sb 1816 df-cleq 2231 df-clel 2234 df-nfc 2381 df-rex 2534 |
| This theorem is used by: 3reeanv 2722 fliftfun 6005 tfrlem5 6590 eroveu 6905 erovlem 6906 xpf1o 7150 genprndl 7894 genprndu 7895 ltpopr 7968 ltsopr 7969 cauappcvgprlemdisj 8024 caucvgprlemdisj 8047 caucvgprprlemdisj 8075 exbtwnzlemex 10700 rebtwn2z 10705 rexanre 12008 summodc 12174 prodmodclem2 12368 prodmodc 12369 dvds2lem 12594 odd2np1 12664 opoe 12686 omoe 12687 opeo 12688 omeo 12689 gcddiv 12820 divgcdcoprmex 12904 pcqmul 13110 pcadd 13147 mul4sq 13201 4sqlem12 13209 dvdsrtr 14516 unitgrp 14531 lss1d 14828 znidom 15100 tgcl 15307 restbasg 15411 txuni2 15499 txbas 15501 txcnp 15514 blin2 15675 tgqioo 15798 plyadd 15994 plymul 15995 mul2sq 16457 2sqlem5 16460 uhgr2edg 16669 |
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