---

Step * of Lemma null-class-is-empty

∀[es,e:Top].  (Null es e ~ {})
BY
{ (Auto THEN RepUR ``null-class`` 0 THEN Auto) }

---

Latex:

---

Latex:
\mforall{}[es,e:Top].    (Null  es  e  \msim{}  \{\})


By

---

Latex:
(Auto  THEN  RepUR  ``null-class``  0  THEN  Auto)

---

Home Index