---

Step * 1 of Lemma lattice-fset-join-union


1. l : BoundedLattice
2. eq : EqDecider(Point(l))
3. s2 : fset(Point(l))
⊢ \/({} ⋃ s2) = \/({}) ∨ \/(s2) ∈ Point(l)
BY
{ ((RWO "empty-fset-union" 0 THEN Auto) THEN Subst' \/({}) = 0 ∈ Point(l) 0 THEN Auto) }

---

Latex:

---

Latex:

1.  l  :  BoundedLattice
2.  eq  :  EqDecider(Point(l))
3.  s2  :  fset(Point(l))
\mvdash{}  \mbackslash{}/(\{\}  \mcup{}  s2)  =  \mbackslash{}/(\{\})  \mvee{}  \mbackslash{}/(s2)


By

---

Latex:
((RWO  "empty-fset-union"  0  THEN  Auto)  THEN  Subst'  \mbackslash{}/(\{\})  =  0  0  THEN  Auto)

---

Home Index