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Mirrors > Home > ILE Home > Th. List > sylan9bbr | GIF version |
Description: Nested syllogism inference conjoining dissimilar antecedents. (Contributed by NM, 4-Mar-1995.) |
Ref | Expression |
---|---|
sylan9bbr.1 | ⊢ (𝜑 → (𝜓 ↔ 𝜒)) |
sylan9bbr.2 | ⊢ (𝜃 → (𝜒 ↔ 𝜏)) |
Ref | Expression |
---|---|
sylan9bbr | ⊢ ((𝜃 ∧ 𝜑) → (𝜓 ↔ 𝜏)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sylan9bbr.1 | . . 3 ⊢ (𝜑 → (𝜓 ↔ 𝜒)) | |
2 | sylan9bbr.2 | . . 3 ⊢ (𝜃 → (𝜒 ↔ 𝜏)) | |
3 | 1, 2 | sylan9bb 450 | . 2 ⊢ ((𝜑 ∧ 𝜃) → (𝜓 ↔ 𝜏)) |
4 | 3 | ancoms 264 | 1 ⊢ ((𝜃 ∧ 𝜑) → (𝜓 ↔ 𝜏)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 102 ↔ wb 103 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 |
This theorem depends on definitions: df-bi 115 |
This theorem is referenced by: pm5.75 904 mpteq12f 3884 opelopabsb 4051 elreimasng 4753 fvelrnb 5297 fmptco 5406 fconstfvm 5455 f1oiso 5544 mpt2eq123 5643 dfoprab4f 5898 fmpt2x 5905 nnmword 6207 ltmpig 6801 qreccl 9022 0fz1 9354 zmodid2 9648 divgcdcoprm0 10863 cbvrald 11031 |
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