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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 2668 | . 2 ⊢ (𝑥 ∈ 𝐴 → (∃𝑦 ∈ 𝐵 𝜑 → 𝜓)) |
| 3 | 2 | rexlimiv 2662 | 1 ⊢ (∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐵 𝜑 → 𝜓) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ∈ wcel 2209 ∃wrex 2529 |
| 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 1500 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-4 1563 ax-17 1579 ax-ial 1587 ax-i5r 1588 |
| This theorem depends on definitions: df-bi 117 df-nf 1514 df-ral 2533 df-rex 2534 |
| This theorem is referenced by: opelxp 4799 f1o2ndf1 6454 xpdom2 7119 distrlem5prl 7943 distrlem5pru 7944 mulrid 8313 cnegex 8494 recexap 8971 creur 9279 creui 9280 cju 9281 elz2 9695 qre 10004 qaddcl 10014 qnegcl 10015 qmulcl 10016 qreccl 10021 elpqb 10029 fundm2domnop0 11278 replim 11602 prodmodc 12323 odd2np1 12618 opoe 12640 omoe 12641 opeo 12642 omeo 12643 qredeu 12853 pythagtriplem1 13022 pcz 13089 4sqlem1 13145 4sqlem2 13146 4sqlem4 13149 mul4sq 13151 txuni2 15280 blssioo 15577 tgioo 15578 elply 15758 2sqlem2 16148 mul2sq 16149 2sqlem7 16154 upgredgpr 16304 |
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