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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 3636 elpwb 4564 ssdifsn 4750 brab2a 5743 cnveq0b 6191 elon2 6373 elovmpo 7666 eqop2 8044 iscard 10057 iscard2 10058 elnnnn0 12650 elfzo2 13797 bitsval 16595 1nprm 16855 funcpropd 18078 isfull 18088 isfth 18092 ismgmhm 18886 ismhm 18981 isghm 19431 ghmpropd 19471 isga 19506 oppgcntz 19579 gexdvdsi 19798 isrnghm 20672 isrhm 20710 issdrg 21046 abvpropd 21093 islmhm 21303 dfprm2 21780 prmirred 21781 elocv 21975 isobs 22027 iscn2 23557 iscnp2 23558 islocfin 23837 elflim2 24284 isfcls 24329 isnghm 25043 isnmhm 25066 0plef 25994 elply 26514 dchrelbas4 27571 brslts 28149 nb3grpr 29964 ispligb 31080 isph 31425 abfmpunirn 33289 iscvm 36093 sscoid 36750 bj-pwvrelb 37885 bj-elsnb 38051 bj-ideqb 38156 bj-opelidb1ALT 38163 bj-elid5 38166 eldiophb 43844 eldioph3b 43852 eldioph4b 43894 bropabg 44401 brfvrcld2 44768 islmd 50849 iscmd 50850 |
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