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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 pm4.87 557 nan 696 pm4.14dc 895 pm5.6dc 931 2sb6 2035 2sb6rf 2041 2exsb 2060 mor 2120 eu2 2122 moanim 2152 r2alf 2547 r3al 2574 r19.23t 2638 ceqsralt 2828 rspc2gv 2920 ralrab 2965 ralrab2 2969 euind 2991 reu2 2992 reu3 2994 rmo4 2997 rmo3f 3001 reuind 3009 rmo2ilem 3120 rmo3 3122 ralss 3291 rabss 3302 raldifb 3345 unissb 3921 elintrab 3938 ssintrab 3949 dftr5 4188 repizf2lem 4249 reusv3 4555 tfi 4678 raliunxp 4869 fununi 5395 dff13 5904 dfsmo2 6448 tfr1onlemaccex 6509 tfrcllemaccex 6522 qliftfun 6781 nnnninfeq2 7322 prime 9572 raluz 9805 raluz2 9806 ralrp 9903 facwordi 10995 modfsummod 12012 nnwosdc 12603 isprm2 12682 isprm4 12684 metcnp 15229 limcdifap 15379 bdcriota 16428 nnnninfex 16574 |
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