---

Step * 1 of Lemma filter_wf5


1. T : Type
2. l : T List
3. P : {x:T| (x ∈ l)}  ⟶ 𝔹
⊢ filter(P;l) ∈ T List
BY
{ (InstLemma `filter_wf` [{x:T| (x ∈ l)} ]⋅ THEN Auto) }

---

Latex:

---

Latex:

1.  T  :  Type
2.  l  :  T  List
3.  P  :  \{x:T|  (x  \mmember{}  l)\}    {}\mrightarrow{}  \mBbbB{}
\mvdash{}  filter(P;l)  \mmember{}  T  List


By

---

Latex:
(InstLemma  `filter\_wf`  [\{x:T|  (x  \mmember{}  l)\}  ]\mcdot{}  THEN  Auto)

---

Home Index