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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 4545 smodm 6566 erdm 6821 ixpfn 6991 dif1en 7188 eluzelz 9948 lincmble 10424 elfz3nn0 10540 ef01bndlem 12549 sin01bnd 12550 cos01bnd 12551 sin01gt0 12555 bitsss 12738 gznegcl 13184 gzcjcl 13185 gzaddcl 13186 gzmulcl 13187 gzabssqcl 13190 4sqlem4a 13200 xpsff1o 13730 subgss 14037 rngmgp 14343 srgmgp 14380 ringmgp 14414 lmodring 14741 lmodprop2d 14795 reeff1oleme 16010 cosq14gt0 16071 cosq23lt0 16072 coseq0q4123 16073 coseq00topi 16074 coseq0negpitopi 16075 cosq34lt1 16090 cos02pilt1 16091 ioocosf1o 16094 gausslemma2dlem1a 16394 2sqlem2 16451 2sqlem3 16453 |
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