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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 6589 eroveu 6904 erovlem 6905 xpf1o 7148 genprndl 7894 genprndu 7895 ltpopr 7968 ltsopr 7969 cauappcvgprlemdisj 8024 caucvgprlemdisj 8047 caucvgprprlemdisj 8075 exbtwnzlemex 10701 rebtwn2z 10706 rexanre 12009 summodc 12175 prodmodclem2 12369 prodmodc 12370 dvds2lem 12595 odd2np1 12665 opoe 12687 omoe 12688 opeo 12689 omeo 12690 gcddiv 12821 divgcdcoprmex 12905 pcqmul 13111 pcadd 13148 mul4sq 13202 4sqlem12 13210 dvdsrtr 14517 unitgrp 14532 lss1d 14829 znidom 15101 tgcl 15290 restbasg 15394 txuni2 15482 txbas 15484 txcnp 15497 blin2 15658 tgqioo 15781 plyadd 15977 plymul 15978 mul2sq 16440 2sqlem5 16443 uhgr2edg 16652 |
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