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| Mirrors > Home > ILE Home > Th. List > simp2bi | GIF version | ||
| Description: Deduce a conjunct from a triple conjunction. (Contributed by Jonathan Ben-Naim, 3-Jun-2011.) |
| Ref | Expression |
|---|---|
| 3simp1bi.1 | ⊢ (𝜑 ↔ (𝜓 ∧ 𝜒 ∧ 𝜃)) |
| Ref | Expression |
|---|---|
| simp2bi | ⊢ (𝜑 → 𝜒) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3simp1bi.1 | . . 3 ⊢ (𝜑 ↔ (𝜓 ∧ 𝜒 ∧ 𝜃)) | |
| 2 | 1 | biimpi 120 | . 2 ⊢ (𝜑 → (𝜓 ∧ 𝜒 ∧ 𝜃)) |
| 3 | 2 | simp2d 1041 | 1 ⊢ (𝜑 → 𝜒) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 105 ∧ w3a 1009 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 |
| This proof depends on definitions: df-bi 117 df-3an 1011 |
| This theorem is used by: 0ellim 4543 smodm 6562 erdm 6817 ixpfn 6986 dif1en 7183 eluzelz 9933 lincmble 10408 elfz3nn0 10524 ef01bndlem 12525 sin01bnd 12526 cos01bnd 12527 sin01gt0 12531 bitsss 12714 gznegcl 13156 gzcjcl 13157 gzaddcl 13158 gzmulcl 13159 gzabssqcl 13162 4sqlem4a 13172 xpsff1o 13672 subgss 13979 rngmgp 14237 srgmgp 14274 ringmgp 14308 lmodring 14633 lmodprop2d 14687 reeff1oleme 15875 cosq14gt0 15936 cosq23lt0 15937 coseq0q4123 15938 coseq00topi 15939 coseq0negpitopi 15940 cosq34lt1 15954 cos02pilt1 15955 ioocosf1o 15958 gausslemma2dlem1a 16189 2sqlem2 16246 2sqlem3 16248 |
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