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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 3644 elpwb 4572 ssdifsn 4758 brab2a 5756 elon2 6375 elovmpo 7665 eqop2 8035 iscard 9977 iscard2 9978 elnnnn0 12564 elfzo2 13709 bitsval 16506 1nprm 16761 funcpropd 17983 isfull 17993 isfth 17997 ismgmhm 18788 ismhm 18882 isghm 19332 ghmpropd 19372 isga 19407 oppgcntz 19480 gexdvdsi 19699 isrnghm 20571 isrhm 20609 issdrg 20943 abvpropd 20990 islmhm 21200 dfprm2 21675 prmirred 21676 elocv 21870 isobs 21922 iscn2 23447 iscnp2 23448 islocfin 23727 elflim2 24174 isfcls 24219 isnghm 24933 isnmhm 24956 0plef 25884 elply 26405 dchrelbas4 27460 brslts 28008 nb3grpr 29792 ispligb 30902 isph 31247 abfmpunirn 33070 iscvm 35790 sscoid 36442 bj-pwvrelb 37592 bj-elsnb 37756 bj-ideqb 37862 bj-opelidb1ALT 37869 bj-elid5 37872 eldiophb 43548 eldioph3b 43556 eldioph4b 43598 bropabg 44110 brfvrcld2 44478 islmd 50502 iscmd 50503 |
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