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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 448 pm5.3 479 pm4.87 563 nan 703 pm4.14dc 902 pm5.6dc 938 2sb6 2044 2sb6rf 2050 2exsb 2069 mor 2129 eu2 2131 moanim 2161 r2alf 2567 r3al 2594 r19.23t 2658 ceqsralt 2849 rspc2gv 2942 ralrab 2987 ralrab2 2991 euind 3013 reu2 3014 reu3 3016 rmo4 3019 rmo3f 3023 reuind 3031 rmo2ilem 3142 rmo3 3144 ralss 3314 rabss 3325 raldifb 3369 unissb 3963 elintrab 3980 ssintrab 3991 dftr5 4230 repizf2lem 4296 reusv3 4604 tfi 4727 raliunxp 4919 fununi 5447 dff13 5968 dfsmo2 6552 tfr1onlemaccex 6613 tfrcllemaccex 6626 qliftfun 6885 nnnninfeq2 7463 prime 9728 raluz 9961 raluz2 9962 ralrp 10059 facwordi 11161 modfsummod 12208 nnwosdc 12799 isprm2 12878 isprm4 12880 metcnp 15596 limcdifap 15746 bdcriota 16892 nnnninfex 17039 dfrals2 17104 dfralseu2 17138 |
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