---

Step * of Lemma longest-prefix-singleton

∀[x,P:Top].  (longest-prefix(P;[x]) ~ [])
BY
{ ((UnivCD THENA Auto) THEN RepeatFor 2 ((RecUnfold `longest-prefix` 0 THEN RepUR ``let`` 0)) THEN Auto) }

---

Latex:

---

Latex:
\mforall{}[x,P:Top].    (longest-prefix(P;[x])  \msim{}  [])


By

---

Latex:
((UnivCD  THENA  Auto)
  THEN  RepeatFor  2  ((RecUnfold  `longest-prefix`  0  THEN  RepUR  ``let``  0))
  THEN  Auto)

---

Home Index