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Related theorems GIF version |
| Description: Distribution of implication over biconditional (inference rule). |
| Ref | Expression |
|---|---|
| pm5.32i.1 | ⊢ (φ → (ψ ↔ χ)) |
| Ref | Expression |
|---|---|
| pm5.32i | ⊢ ((φ ∧ ψ) ↔ (φ ∧ χ)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pm5.32i.1 | . 2 ⊢ (φ → (ψ ↔ χ)) | |
| 2 | pm5.32 488 | . 2 ⊢ ((φ → (ψ ↔ χ)) ↔ ((φ ∧ ψ) ↔ (φ ∧ χ))) | |
| 3 | 1, 2 | mpbi 164 | 1 ⊢ ((φ ∧ ψ) ↔ (φ ∧ χ)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 ↔ wb 127 ∧ wa 196 |
| This theorem is referenced by: pm5.32ri 490 cleq2tr 1148 birexa 1229 bireua 1319 birabi 1342 gencbvex 1372 euxfr 1436 elrabsf 1456 reuxfr 1580 dflim2 2280 onzsl 2367 dfom2 2374 cbvop 2473 relss 2480 iss 2599 fsn 2895 f1fv 2916 isoini 2938 tz7.48-1 2994 eloprabg 3035 fnoprval 3042 mapsnen 3334 aceq5lem1 3558 iscard 3659 iscard2 3660 cardval2 3661 isinfcard 3692 elni2 3799 indpi 3828 genpass 3906 reclem1pr 3950 elreal 4044 sup3 4511 elnn0z 4574 elznn0 4576 elnn0nn 4593 elnnnn0 4594 seqlem2 4663 ruclem13 4897 dfchsup2 5299 dfchj2 5325 dfchj3 5326 h1det 5455 elat2 5739 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 |
| This theorem depends on definitions: df-bi 128 df-an 198 |