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| Mirrors > Home > MPE Home > Th. List > biadanii | Structured version Visualization version GIF version | ||
| Description: Inference associated with biadani 832. Add a conjunction to an equivalence. (Contributed by Jeff Madsen, 20-Jun-2011.) (Proof shortened by BJ, 4-Mar-2023.) |
| Ref | Expression |
|---|---|
| biadani.1 | ⊢ (𝜑 → 𝜓) |
| biadanii.2 | ⊢ (𝜓 → (𝜑 ↔ 𝜒)) |
| Ref | Expression |
|---|---|
| biadanii | ⊢ (𝜑 ↔ (𝜓 ∧ 𝜒)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | biadanii.2 | . 2 ⊢ (𝜓 → (𝜑 ↔ 𝜒)) | |
| 2 | biadani.1 | . . 3 ⊢ (𝜑 → 𝜓) | |
| 3 | 2 | biadani 832 | . 2 ⊢ ((𝜓 → (𝜑 ↔ 𝜒)) ↔ (𝜑 ↔ (𝜓 ∧ 𝜒))) |
| 4 | 1, 3 | mpbi 233 | 1 ⊢ (𝜑 ↔ (𝜓 ∧ 𝜒)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
| This proof depends on definitions: df-bi 210 df-an 402 |
| This theorem is used by: elab4g 3637 elpwb 4565 ssdifsn 4751 brab2a 5744 elon2 6373 elovmpo 7666 eqop2 8044 iscard 10056 iscard2 10057 elnnnn0 12649 elfzo2 13796 bitsval 16594 1nprm 16854 funcpropd 18077 isfull 18087 isfth 18091 ismgmhm 18885 ismhm 18980 isghm 19430 ghmpropd 19470 isga 19505 oppgcntz 19578 gexdvdsi 19797 isrnghm 20671 isrhm 20709 issdrg 21045 abvpropd 21092 islmhm 21302 dfprm2 21779 prmirred 21780 elocv 21974 isobs 22026 iscn2 23556 iscnp2 23557 islocfin 23836 elflim2 24283 isfcls 24328 isnghm 25042 isnmhm 25065 0plef 25993 elply 26513 dchrelbas4 27570 brslts 28148 nb3grpr 29963 ispligb 31079 isph 31424 abfmpunirn 33246 iscvm 36024 sscoid 36675 bj-pwvrelb 37810 bj-elsnb 37976 bj-ideqb 38080 bj-opelidb1ALT 38087 bj-elid5 38090 eldiophb 43767 eldioph3b 43775 eldioph4b 43817 bropabg 44324 brfvrcld2 44691 islmd 50772 iscmd 50773 |
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