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| Mirrors > Home > ILE Home > Th. List > baib | GIF version | ||
| Description: Move conjunction outside of biconditional. (Contributed by NM, 13-May-1999.) |
| Ref | Expression |
|---|---|
| baib.1 | ⊢ (𝜑 ↔ (𝜓 ∧ 𝜒)) |
| Ref | Expression |
|---|---|
| baib | ⊢ (𝜓 → (𝜑 ↔ 𝜒)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | baib.1 | . 2 ⊢ (𝜑 ↔ (𝜓 ∧ 𝜒)) | |
| 2 | ibar 301 | . 2 ⊢ (𝜓 → (𝜒 ↔ (𝜓 ∧ 𝜒))) | |
| 3 | 1, 2 | bitr4id 199 | 1 ⊢ (𝜓 → (𝜑 ↔ 𝜒)) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 ↔ wb 105 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 |
| This proof depends on definitions: df-bi 117 |
| This theorem is used by: baibr 932 rbaib 933 ceqsrexbv 2957 elrab3 2983 rabsn 3776 elrint2 4011 frind 4499 fnres 5503 f1ompt 5862 fliftfun 6005 ovid 6208 brdifun 6838 xpcomco 7129 isacnm 7566 ltexprlemdisj 7980 xrlenlt 8397 reapval 8913 znnnlt1 9704 difrp 10111 elfz 10435 fzolb2 10580 elfzo3 10589 fzouzsplit 10606 bitsval2 12737 rpexp 12958 ballotfilemodife 13299 isghm3 14107 isabl2 14188 gsum2d2fi 14275 dfrhm2 14571 bastop1 15321 cnntr 15463 lmres 15486 tx1cn 15507 tx2cn 15508 xmetec 15675 lgsabs1 16375 |
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