Step
*
2
2
1
1
2
of Lemma
fl-meet-0-1
1. T : Type
2. eq : EqDecider(T)
3. ee : EqDecider(Point(face-lattice(T;eq)))
4. deq-fset(deq-fset(union-deq(T;T;eq;eq))) = ee ∈ EqDecider(Point(face-lattice(T;eq)))
⊢ ∀a,b:Point(face-lattice(T;eq)).
((/\({} ⋃ {a} ⋃ {b}) = 0 ∈ Point(face-lattice(T;eq)))
⇒ (a ∧ b = 0 ∈ Point(face-lattice(T;eq))))
BY
{ (Thin (-1) THEN MoveToConcl (-1) THEN (GenConclTerm ⌜face-lattice(T;eq)⌝⋅ THENA Auto) THEN All Thin THEN Auto) }
1
1. v : BoundedDistributiveLattice
2. ee : EqDecider(Point(v))
3. a : Point(v)
4. b : Point(v)
5. /\({} ⋃ {a} ⋃ {b}) = 0 ∈ Point(v)
⊢ a ∧ b = 0 ∈ Point(v)
Latex:
Latex:
1. T : Type
2. eq : EqDecider(T)
3. ee : EqDecider(Point(face-lattice(T;eq)))
4. deq-fset(deq-fset(union-deq(T;T;eq;eq))) = ee
\mvdash{} \mforall{}a,b:Point(face-lattice(T;eq)). ((/\mbackslash{}(\{\} \mcup{} \{a\} \mcup{} \{b\}) = 0) {}\mRightarrow{} (a \mwedge{} b = 0))
By
Latex:
(Thin (-1)
THEN MoveToConcl (-1)
THEN (GenConclTerm \mkleeneopen{}face-lattice(T;eq)\mkleeneclose{}\mcdot{} THENA Auto)
THEN All Thin
THEN Auto)
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