Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > syl2anb | GIF version |
Description: A double syllogism inference. (Contributed by NM, 29-Jul-1999.) |
Ref | Expression |
---|---|
syl2anb.1 | ⊢ (𝜑 ↔ 𝜓) |
syl2anb.2 | ⊢ (𝜏 ↔ 𝜒) |
syl2anb.3 | ⊢ ((𝜓 ∧ 𝜒) → 𝜃) |
Ref | Expression |
---|---|
syl2anb | ⊢ ((𝜑 ∧ 𝜏) → 𝜃) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | syl2anb.2 | . 2 ⊢ (𝜏 ↔ 𝜒) | |
2 | syl2anb.1 | . . 3 ⊢ (𝜑 ↔ 𝜓) | |
3 | syl2anb.3 | . . 3 ⊢ ((𝜓 ∧ 𝜒) → 𝜃) | |
4 | 2, 3 | sylanb 282 | . 2 ⊢ ((𝜑 ∧ 𝜒) → 𝜃) |
5 | 1, 4 | sylan2b 285 | 1 ⊢ ((𝜑 ∧ 𝜏) → 𝜃) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 ↔ wb 104 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 |
This theorem depends on definitions: df-bi 116 |
This theorem is referenced by: sylancb 415 stdcndc 835 reupick3 3402 difprsnss 3705 trin2 4989 imadiflem 5261 fnun 5288 fco 5347 f1co 5399 foco 5414 f1oun 5446 f1oco 5449 eqfunfv 5582 ftpg 5663 issmo 6247 tfrlem5 6273 ener 6736 domtr 6742 unen 6773 xpdom2 6788 mapen 6803 pm54.43 7137 axpre-lttrn 7816 axpre-mulgt0 7819 zmulcl 9235 qaddcl 9564 qmulcl 9566 rpaddcl 9604 rpmulcl 9605 rpdivcl 9606 xrltnsym 9720 xrlttri3 9724 ge0addcl 9908 ge0mulcl 9909 ge0xaddcl 9910 expclzaplem 10469 expge0 10481 expge1 10482 hashfacen 10735 qredeu 12008 nn0gcdsq 12109 cnovex 12737 iscn2 12741 txuni 12804 txcn 12816 |
Copyright terms: Public domain | W3C validator |