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Mirrors > Home > ILE Home > Th. List > impexp | GIF version |
Description: Import-export theorem. Part of Theorem *4.87 of [WhiteheadRussell] p. 122. (Contributed by NM, 5-Aug-1993.) (Proof shortened by Wolf Lammen, 24-Mar-2013.) |
Ref | Expression |
---|---|
impexp | ⊢ (((𝜑 ∧ 𝜓) → 𝜒) ↔ (𝜑 → (𝜓 → 𝜒))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pm3.3 257 | . 2 ⊢ (((𝜑 ∧ 𝜓) → 𝜒) → (𝜑 → (𝜓 → 𝜒))) | |
2 | pm3.31 258 | . 2 ⊢ ((𝜑 → (𝜓 → 𝜒)) → ((𝜑 ∧ 𝜓) → 𝜒)) | |
3 | 1, 2 | impbii 124 | 1 ⊢ (((𝜑 ∧ 𝜓) → 𝜒) ↔ (𝜑 → (𝜓 → 𝜒))) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 102 ↔ wb 103 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 |
This theorem depends on definitions: df-bi 115 |
This theorem is referenced by: imp4a 341 exp4a 358 imdistan 432 pm5.3 458 pm4.87 523 nan 658 pm4.14dc 820 pm5.6dc 868 2sb6 1901 2sb6rf 1907 2exsb 1926 mor 1983 eu2 1985 moanim 2015 r2alf 2383 r3al 2408 r19.23t 2467 ceqsralt 2626 rspc2gv 2712 ralrab 2753 ralrab2 2757 euind 2779 reu2 2780 reu3 2782 rmo4 2785 reuind 2795 rmo2ilem 2903 rmo3 2905 ralss 3060 rabss 3071 raldifb 3112 unissb 3631 elintrab 3648 ssintrab 3659 dftr5 3878 repizf2lem 3935 reusv3 4210 tfi 4323 raliunxp 4495 fununi 4987 dff13 5428 dfsmo2 5925 qliftfun 6211 prime 8446 raluz 8666 raluz2 8667 ralrp 8755 facwordi 9667 isprm2 10499 isprm4 10501 bdcriota 10674 |
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