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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 1575 | . 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 1541 |
| 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 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: exdistr 1961 19.42vv 1963 19.42vvv 1964 4exdistr 1968 cbvex2 1974 2sb5 2039 2sb5rf 2045 rexcom4a 2840 ceqsex2 2857 reuind 3025 2rmorex 3026 sbccomlem 3120 bm1.3ii 4237 opm 4356 eqvinop 4365 uniuni 4579 elco 4928 dmopabss 4975 dmopab3 4976 mptpreima 5263 brprcneu 5670 relelfvdm 5709 fndmin 5792 fliftf 5980 dfoprab2 6110 dmoprab 6144 dmoprabss 6145 fnoprabg 6164 opabex3d 6325 opabex3 6326 eroveu 6875 dmaddpq 7712 dmmulpq 7713 prarloc 7836 ltexprlemopl 7934 ltexprlemlol 7935 ltexprlemopu 7936 ltexprlemupu 7937 shftdm 11537 fngzsum 13657 gzsumvalx 13658 ntreq0 15128 bdbm1.3ii 16802 |
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