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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 6002 tfrlem5 6585 eroveu 6900 erovlem 6901 xpf1o 7144 genprndl 7889 genprndu 7890 ltpopr 7963 ltsopr 7964 cauappcvgprlemdisj 8019 caucvgprlemdisj 8042 caucvgprprlemdisj 8070 exbtwnzlemex 10695 rebtwn2z 10700 rexanre 12003 summodc 12169 prodmodclem2 12363 prodmodc 12364 dvds2lem 12589 odd2np1 12659 opoe 12681 omoe 12682 opeo 12683 omeo 12684 gcddiv 12815 divgcdcoprmex 12899 pcqmul 13105 pcadd 13142 mul4sq 13196 4sqlem12 13204 dvdsrtr 14492 unitgrp 14507 lss1d 14804 znidom 15076 tgcl 15256 restbasg 15360 txuni2 15448 txbas 15450 txcnp 15463 blin2 15624 tgqioo 15747 plyadd 15943 plymul 15944 mul2sq 16401 2sqlem5 16404 uhgr2edg 16613 |
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