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Related theorems GIF version |
| Description: A syllogism inference from two biconditionals. |
| Ref | Expression |
|---|---|
| syl5bb.1 | ⊢ (φ → (ψ ↔ χ)) |
| syl5bb.2 | ⊢ (θ ↔ ψ) |
| Ref | Expression |
|---|---|
| syl5bb | ⊢ (φ → (θ ↔ χ)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | syl5bb.2 | . . 3 ⊢ (θ ↔ ψ) | |
| 2 | 1 | a1i 7 | . 2 ⊢ (φ → (θ ↔ ψ)) |
| 3 | syl5bb.1 | . 2 ⊢ (φ → (ψ ↔ χ)) | |
| 4 | 2, 3 | bitrd 406 | 1 ⊢ (φ → (θ ↔ χ)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 ↔ wb 127 |
| This theorem is referenced by: syl5rbb 411 syl5bbr 412 3bitr4g 428 oplem1 578 19.16 730 19.19 737 sbcom 916 ceqsrexv 1413 elab2g 1418 elrabf 1421 eueq2 1429 ru 1437 birabrdv 1648 disjpss 1738 undif4 1744 r19.36zv 1772 copsex4g 1904 brabg 2116 oneqmini 2272 elsucg 2290 elsuc2g 2291 onpwsuc 2315 dfom2 2374 opbrop 2472 opelcnvg 2517 dmsnop 2547 resieq 2581 iss 2599 imasn 2616 cores 2659 fununi 2705 fnopabfv 2858 fnsnfv 2861 dmfco 2864 fvco 2865 fvopabn 2873 fressnfv 2898 f1fv 2916 isoini 2938 f1oiso 2942 f1oweOLD 2944 tfrlem1 2949 rdglim2 2987 eloprabg 3035 oprabval 3047 ndmoprg 3057 brecop 3242 mapsn 3269 xpsnen 3339 xpdom2 3345 pw2en 3348 mapxpen 3390 aceq3lem 3555 zorn 3611 fodomb 3615 domtri 3644 cardsdomel 3658 iscard2 3660 alephnbtwn 3674 nlt1pi 3827 ltsopq 3869 genpv 3896 ltsosr 3997 suppsrlem 4015 suppsr 4016 supsrlem6 4024 suprelem 4053 supre 4054 axrrecex 4081 renegcl 4171 divdivdivt 4265 leltt 4278 lerec 4411 lt2sq 4414 nn1suc 4435 elznn0 4576 elnn0nn 4593 zltp1let 4597 rebtwnz 4620 sqe11 4702 znnen 4930 sh2 5126 chocuni 5179 projlem15 5207 jp 5703 chrelat 5757 chrelat2 5758 cvexchlem 5759 |
| 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 |