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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 2038 2sb6rf 2044 2exsb 2063 mor 2123 eu2 2125 moanim 2155 r2alf 2559 r3al 2586 r19.23t 2650 ceqsralt 2840 rspc2gv 2932 ralrab 2977 ralrab2 2981 euind 3003 reu2 3004 reu3 3006 rmo4 3009 rmo3f 3013 reuind 3021 rmo2ilem 3132 rmo3 3134 ralss 3303 rabss 3314 raldifb 3358 unissb 3943 elintrab 3960 ssintrab 3971 dftr5 4210 repizf2lem 4273 reusv3 4580 tfi 4703 raliunxp 4895 fununi 5423 dff13 5940 dfsmo2 6517 tfr1onlemaccex 6578 tfrcllemaccex 6591 qliftfun 6850 nnnninfeq2 7419 prime 9676 raluz 9909 raluz2 9910 ralrp 10007 facwordi 11101 modfsummod 12140 nnwosdc 12731 isprm2 12810 isprm4 12812 metcnp 15369 limcdifap 15519 bdcriota 16645 nnnninfex 16792 |
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