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 414 stdcndc 830 reupick3 3361 difprsnss 3658 trin2 4930 imadiflem 5202 fnun 5229 fco 5288 f1co 5340 foco 5355 f1oun 5387 f1oco 5390 eqfunfv 5523 ftpg 5604 issmo 6185 tfrlem5 6211 ener 6673 domtr 6679 unen 6710 xpdom2 6725 mapen 6740 pm54.43 7046 axpre-lttrn 7699 axpre-mulgt0 7702 zmulcl 9114 qaddcl 9434 qmulcl 9436 rpaddcl 9472 rpmulcl 9473 rpdivcl 9474 xrltnsym 9586 xrlttri3 9590 ge0addcl 9771 ge0mulcl 9772 ge0xaddcl 9773 expclzaplem 10324 expge0 10336 expge1 10337 hashfacen 10586 qredeu 11785 nn0gcdsq 11885 cnovex 12375 iscn2 12379 txuni 12442 txcn 12454 |
Copyright terms: Public domain | W3C validator |