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Mirrors > Home > MPE Home > Th. List > syl5ibrcom | Structured version Visualization version GIF version |
Description: A mixed syllogism inference. (Contributed by NM, 20-Jun-2007.) |
Ref | Expression |
---|---|
syl5ibr.1 | ⊢ (𝜑 → 𝜃) |
syl5ibr.2 | ⊢ (𝜒 → (𝜓 ↔ 𝜃)) |
Ref | Expression |
---|---|
syl5ibrcom | ⊢ (𝜑 → (𝜒 → 𝜓)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | syl5ibr.1 | . . 3 ⊢ (𝜑 → 𝜃) | |
2 | syl5ibr.2 | . . 3 ⊢ (𝜒 → (𝜓 ↔ 𝜃)) | |
3 | 1, 2 | syl5ibr 245 | . 2 ⊢ (𝜒 → (𝜑 → 𝜓)) |
4 | 3 | com12 32 | 1 ⊢ (𝜑 → (𝜒 → 𝜓)) |
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