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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 5748 elon2 6368 elovmpo 7660 eqop2 8030 iscard 9983 iscard2 9984 elnnnn0 12574 elfzo2 13720 bitsval 16517 1nprm 16772 funcpropd 17994 isfull 18004 isfth 18008 ismgmhm 18801 ismhm 18896 isghm 19346 ghmpropd 19386 isga 19421 oppgcntz 19494 gexdvdsi 19713 isrnghm 20585 isrhm 20623 issdrg 20957 abvpropd 21004 islmhm 21214 dfprm2 21689 prmirred 21690 elocv 21884 isobs 21936 iscn2 23466 iscnp2 23467 islocfin 23746 elflim2 24193 isfcls 24238 isnghm 24952 isnmhm 24975 0plef 25903 elply 26423 dchrelbas4 27482 brslts 28030 nb3grpr 29845 ispligb 30961 isph 31306 abfmpunirn 33128 iscvm 35841 sscoid 36493 bj-pwvrelb 37644 bj-elsnb 37808 bj-ideqb 37914 bj-opelidb1ALT 37921 bj-elid5 37924 eldiophb 43605 eldioph3b 43613 eldioph4b 43655 bropabg 44167 brfvrcld2 44535 islmd 50594 iscmd 50595 |
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