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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 | pm3.3 261 | . 2 ⊢ (((𝜑 ∧ 𝜓) → 𝜒) → (𝜑 → (𝜓 → 𝜒))) | |
| 2 | pm3.31 262 | . 2 ⊢ ((𝜑 → (𝜓 → 𝜒)) → ((𝜑 ∧ 𝜓) → 𝜒)) | |
| 3 | 1, 2 | impbii 126 | 1 ⊢ (((𝜑 ∧ 𝜓) → 𝜒) ↔ (𝜑 → (𝜓 → 𝜒))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: imp4a 349 exp4a 366 imdistan 444 pm5.3 475 pm4.87 559 nan 699 pm4.14dc 898 pm5.6dc 934 2sb6 2037 2sb6rf 2043 2exsb 2062 mor 2122 eu2 2124 moanim 2154 r2alf 2550 r3al 2577 r19.23t 2641 ceqsralt 2831 rspc2gv 2923 ralrab 2968 ralrab2 2972 euind 2994 reu2 2995 reu3 2997 rmo4 3000 rmo3f 3004 reuind 3012 rmo2ilem 3123 rmo3 3125 ralss 3294 rabss 3305 raldifb 3349 unissb 3928 elintrab 3945 ssintrab 3956 dftr5 4195 repizf2lem 4257 reusv3 4563 tfi 4686 raliunxp 4877 fununi 5405 dff13 5919 dfsmo2 6496 tfr1onlemaccex 6557 tfrcllemaccex 6570 qliftfun 6829 nnnninfeq2 7371 prime 9622 raluz 9855 raluz2 9856 ralrp 9953 facwordi 11046 modfsummod 12080 nnwosdc 12671 isprm2 12750 isprm4 12752 metcnp 15303 limcdifap 15453 bdcriota 16579 nnnninfex 16728 |
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