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| Mirrors > Home > ILE Home > Th. List > rexlimivv | GIF version | ||
| Description: Inference from Theorem 19.23 of [Margaris] p. 90 (restricted quantifier version). (Contributed by NM, 17-Feb-2004.) |
| Ref | Expression |
|---|---|
| rexlimivv.1 | ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) → (𝜑 → 𝜓)) |
| Ref | Expression |
|---|---|
| rexlimivv | ⊢ (∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐵 𝜑 → 𝜓) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rexlimivv.1 | . . 3 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) → (𝜑 → 𝜓)) | |
| 2 | 1 | rexlimdva 2660 | . 2 ⊢ (𝑥 ∈ 𝐴 → (∃𝑦 ∈ 𝐵 𝜑 → 𝜓)) |
| 3 | 2 | rexlimiv 2654 | 1 ⊢ (∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐵 𝜑 → 𝜓) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ∈ wcel 2203 ∃wrex 2521 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1496 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-4 1559 ax-17 1575 ax-ial 1583 ax-i5r 1584 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-ral 2525 df-rex 2526 |
| This theorem is referenced by: opelxp 4779 f1o2ndf1 6424 xpdom2 7082 distrlem5prl 7901 distrlem5pru 7902 mulrid 8271 cnegex 8451 recexap 8927 creur 9233 creui 9234 cju 9235 elz2 9649 qre 9957 qaddcl 9967 qnegcl 9968 qmulcl 9969 qreccl 9974 elpqb 9982 fundm2domnop0 11220 replim 11544 prodmodc 12264 odd2np1 12559 opoe 12581 omoe 12582 opeo 12583 omeo 12584 qredeu 12794 pythagtriplem1 12963 pcz 13030 4sqlem1 13086 4sqlem2 13087 4sqlem4 13090 mul4sq 13092 txuni2 15121 blssioo 15418 tgioo 15419 elply 15599 2sqlem2 15988 mul2sq 15989 2sqlem7 15994 upgredgpr 16144 |
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