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| Mirrors > Home > ILE Home > Th. List > 19.42v | GIF version | ||
| Description: Special case of Theorem 19.42 of [Margaris] p. 90. (Contributed by NM, 5-Aug-1993.) |
| Ref | Expression |
|---|---|
| 19.42v | ⊢ (∃𝑥(𝜑 ∧ 𝜓) ↔ (𝜑 ∧ ∃𝑥𝜓)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-17 1572 | . 2 ⊢ (𝜑 → ∀𝑥𝜑) | |
| 2 | 1 | 19.42h 1733 | 1 ⊢ (∃𝑥(𝜑 ∧ 𝜓) ↔ (𝜑 ∧ ∃𝑥𝜓)) |
| Colors of variables: wff set class |
| Syntax hints: ∧ wa 104 ↔ wb 105 ∃wex 1538 |
| 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 1493 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-4 1556 ax-17 1572 ax-ial 1580 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: exdistr 1956 19.42vv 1958 19.42vvv 1959 4exdistr 1963 cbvex2 1969 2sb5 2034 2sb5rf 2040 rexcom4a 2825 ceqsex2 2842 reuind 3009 2rmorex 3010 sbccomlem 3104 bm1.3ii 4208 opm 4324 eqvinop 4333 uniuni 4546 elco 4894 dmopabss 4941 dmopab3 4942 mptpreima 5228 brprcneu 5628 relelfvdm 5667 fndmin 5750 fliftf 5935 dfoprab2 6063 dmoprab 6097 dmoprabss 6098 fnoprabg 6117 opabex3d 6278 opabex3 6279 eroveu 6790 dmaddpq 7589 dmmulpq 7590 prarloc 7713 ltexprlemopl 7811 ltexprlemlol 7812 ltexprlemopu 7813 ltexprlemupu 7814 shftdm 11373 fngsum 13461 igsumvalx 13462 ntreq0 14846 bdbm1.3ii 16422 |
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