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Mirrors > Home > MPE Home > Th. List > sylan9 | Structured version Visualization version GIF version |
Description: Nested syllogism inference conjoining dissimilar antecedents. (Contributed by NM, 14-May-1993.) (Proof shortened by Andrew Salmon, 7-May-2011.) |
Ref | Expression |
---|---|
sylan9.1 | ⊢ (𝜑 → (𝜓 → 𝜒)) |
sylan9.2 | ⊢ (𝜃 → (𝜒 → 𝜏)) |
Ref | Expression |
---|---|
sylan9 | ⊢ ((𝜑 ∧ 𝜃) → (𝜓 → 𝜏)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sylan9.1 | . . 3 ⊢ (𝜑 → (𝜓 → 𝜒)) | |
2 | sylan9.2 | . . 3 ⊢ (𝜃 → (𝜒 → 𝜏)) | |
3 | 1, 2 | syl9 75 | . 2 ⊢ (𝜑 → (𝜃 → (𝜓 → 𝜏))) |
4 | 3 | imp 444 | 1 ⊢ ((𝜑 ∧ 𝜃) → (𝜓 → 𝜏)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 383 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
This theorem depends on definitions: df-bi 196 df-an 385 |
This theorem is referenced by: ax8 1983 ax9 1990 rspc2 3292 rspc3v 3296 trintss 4697 copsexg 4882 chfnrn 6236 fvcofneq 6275 ffnfv 6295 f1elima 6421 onint 6887 peano5 6981 f1oweALT 7043 smoel2 7347 pssnn 8063 fiint 8122 dffi2 8212 alephnbtwn 8777 cfcof 8979 zorn2lem7 9207 suplem1pr 9753 addsrpr 9775 mulsrpr 9776 cau3lem 13942 divalglem8 14961 efgi 17955 elfrlmbasn0 19925 locfincmp 21139 tx1stc 21263 fbunfip 21483 filuni 21499 ufileu 21533 rescncf 22508 shmodsi 27632 spanuni 27787 spansneleq 27813 mdi 28538 dmdi 28545 dmdi4 28550 funimass4f 28818 bj-ax89 31854 poimirlem32 32611 ffnafv 39900 |
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