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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 4497 fnres 5500 f1ompt 5859 fliftfun 6002 ovid 6205 brdifun 6834 xpcomco 7124 isacnm 7559 ltexprlemdisj 7973 xrlenlt 8390 reapval 8905 znnnlt1 9694 difrp 10095 elfz 10419 fzolb2 10564 elfzo3 10573 fzouzsplit 10590 bitsval2 12713 rpexp 12933 ballotfilemodife 13242 isghm3 14049 isabl2 14099 dfrhm2 14463 bastop1 15186 cnntr 15328 lmres 15351 tx1cn 15372 tx2cn 15373 xmetec 15540 lgsabs1 16170 |
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