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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 1459 | . 2 ⊢ (𝜑 → ∀𝑥𝜑) | |
2 | 1 | 19.42h 1617 | 1 ⊢ (∃𝑥(𝜑 ∧ 𝜓) ↔ (𝜑 ∧ ∃𝑥𝜓)) |
Colors of variables: wff set class |
Syntax hints: ∧ wa 102 ↔ wb 103 ∃wex 1421 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-5 1376 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-4 1440 ax-17 1459 ax-ial 1467 |
This theorem depends on definitions: df-bi 115 |
This theorem is referenced by: exdistr 1828 19.42vv 1829 19.42vvv 1830 4exdistr 1834 cbvex2 1838 2sb5 1900 2sb5rf 1906 rexcom4a 2623 ceqsex2 2639 reuind 2795 2rmorex 2796 sbccomlem 2888 bm1.3ii 3899 opm 3989 eqvinop 3998 uniuni 4201 dmopabss 4565 dmopab3 4566 mptpreima 4834 brprcneu 5191 relelfvdm 5226 fndmin 5295 fliftf 5459 dfoprab2 5572 dmoprab 5605 dmoprabss 5606 fnoprabg 5622 opabex3d 5768 opabex3 5769 eroveu 6220 dmaddpq 6569 dmmulpq 6570 prarloc 6693 ltexprlemopl 6791 ltexprlemlol 6792 ltexprlemopu 6793 ltexprlemupu 6794 shftdm 9710 bdbm1.3ii 10682 |
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