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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 1574 | . 2 ⊢ (𝜑 → ∀𝑥𝜑) | |
| 2 | 1 | 19.42h 1735 | 1 ⊢ (∃𝑥(𝜑 ∧ 𝜓) ↔ (𝜑 ∧ ∃𝑥𝜓)) |
| Colors of variables: wff set class |
| Syntax hints: ∧ wa 104 ↔ wb 105 ∃wex 1540 |
| 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 1495 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-4 1558 ax-17 1574 ax-ial 1582 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: exdistr 1958 19.42vv 1960 19.42vvv 1961 4exdistr 1965 cbvex2 1971 2sb5 2036 2sb5rf 2042 rexcom4a 2827 ceqsex2 2844 reuind 3011 2rmorex 3012 sbccomlem 3106 bm1.3ii 4210 opm 4326 eqvinop 4335 uniuni 4548 elco 4896 dmopabss 4943 dmopab3 4944 mptpreima 5230 brprcneu 5632 relelfvdm 5671 fndmin 5754 fliftf 5939 dfoprab2 6067 dmoprab 6101 dmoprabss 6102 fnoprabg 6121 opabex3d 6282 opabex3 6283 eroveu 6794 dmaddpq 7598 dmmulpq 7599 prarloc 7722 ltexprlemopl 7820 ltexprlemlol 7821 ltexprlemopu 7822 ltexprlemupu 7823 shftdm 11382 fngsum 13470 igsumvalx 13471 ntreq0 14855 bdbm1.3ii 16486 |
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