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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 2651 | . 2 ⊢ (𝑥 ∈ 𝐴 → (∃𝑦 ∈ 𝐵 𝜑 → 𝜓)) |
| 3 | 2 | rexlimiv 2645 | 1 ⊢ (∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐵 𝜑 → 𝜓) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ∈ wcel 2202 ∃wrex 2512 |
| 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 2516 df-rex 2517 |
| This theorem is referenced by: opelxp 4761 f1o2ndf1 6402 xpdom2 7058 distrlem5prl 7866 distrlem5pru 7867 mulrid 8236 cnegex 8416 recexap 8892 creur 9198 creui 9199 cju 9200 elz2 9612 qre 9920 qaddcl 9930 qnegcl 9931 qmulcl 9932 qreccl 9937 elpqb 9945 fundm2domnop0 11175 replim 11499 prodmodc 12219 odd2np1 12514 opoe 12536 omoe 12537 opeo 12538 omeo 12539 qredeu 12749 pythagtriplem1 12918 pcz 12985 4sqlem1 13041 4sqlem2 13042 4sqlem4 13045 mul4sq 13047 txuni2 15067 blssioo 15364 tgioo 15365 elply 15545 2sqlem2 15934 mul2sq 15935 2sqlem7 15940 upgredgpr 16090 |
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