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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 698 pm4.14dc 897 pm5.6dc 933 2sb6 2037 2sb6rf 2043 2exsb 2062 mor 2122 eu2 2124 moanim 2154 r2alf 2549 r3al 2576 r19.23t 2640 ceqsralt 2830 rspc2gv 2922 ralrab 2967 ralrab2 2971 euind 2993 reu2 2994 reu3 2996 rmo4 2999 rmo3f 3003 reuind 3011 rmo2ilem 3122 rmo3 3124 ralss 3293 rabss 3304 raldifb 3347 unissb 3923 elintrab 3940 ssintrab 3951 dftr5 4190 repizf2lem 4251 reusv3 4557 tfi 4680 raliunxp 4871 fununi 5398 dff13 5909 dfsmo2 6453 tfr1onlemaccex 6514 tfrcllemaccex 6527 qliftfun 6786 nnnninfeq2 7328 prime 9579 raluz 9812 raluz2 9813 ralrp 9910 facwordi 11003 modfsummod 12024 nnwosdc 12615 isprm2 12694 isprm4 12696 metcnp 15242 limcdifap 15392 bdcriota 16504 nnnninfex 16650 |
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