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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 2040 2sb6rf 2046 2exsb 2065 mor 2125 eu2 2127 moanim 2157 r2alf 2561 r3al 2588 r19.23t 2652 ceqsralt 2843 rspc2gv 2936 ralrab 2981 ralrab2 2985 euind 3007 reu2 3008 reu3 3010 rmo4 3013 rmo3f 3017 reuind 3025 rmo2ilem 3136 rmo3 3138 ralss 3308 rabss 3319 raldifb 3363 unissb 3949 elintrab 3966 ssintrab 3977 dftr5 4216 repizf2lem 4279 reusv3 4586 tfi 4709 raliunxp 4901 fununi 5429 dff13 5947 dfsmo2 6531 tfr1onlemaccex 6592 tfrcllemaccex 6605 qliftfun 6864 nnnninfeq2 7433 prime 9695 raluz 9928 raluz2 9929 ralrp 10026 facwordi 11127 modfsummod 12169 nnwosdc 12760 isprm2 12839 isprm4 12841 metcnp 15489 limcdifap 15639 bdcriota 16765 nnnninfex 16912 |
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