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Step * 2 2 of Lemma lattice-fset-meet-free-dlwc-inc


1. T : Type
2. eq : EqDecider(T)
3. Cs : T ⟶ fset(fset(T))
4. s : fset(T)
5. ↑fset-contains-none(eq;s;x.Cs[x])
6. deq-fset(deq-fset(eq)) ∈ EqDecider(Point(free-dist-lattice-with-constraints(T;eq;x.Cs[x])))
7. {s} ∈ Point(free-dist-lattice-with-constraints(T;eq;x.Cs[x]))
8. ∀[s:fset(Point(free-dist-lattice-with-constraints(T;eq;x.Cs[x])))].
   ∀[x:Point(free-dist-lattice-with-constraints(T;eq;x.Cs[x]))].
     /\(s) ≤ x supposing x ∈ s
9. ∀[s:fset(Point(free-dist-lattice-with-constraints(T;eq;x.Cs[x])))].
   ∀[v:Point(free-dist-lattice-with-constraints(T;eq;x.Cs[x]))].
     ((∀x:Point(free-dist-lattice-with-constraints(T;eq;x.Cs[x])). (x ∈ s ⇒ v ≤ x)) ⇒ v ≤ /\(s))
10. {s} ≤ /\(λx.free-dlwc-inc(eq;a.Cs[a];x)"(s))
11. /\(λx.free-dlwc-inc(eq;a.Cs[a];x)"(s)) ≤ {s}
⊢ /\(λx.free-dlwc-inc(eq;a.Cs[a];x)"(s)) = {s} ∈ Point(free-dist-lattice-with-constraints(T;eq;x.Cs[x]))
BY
{ (InstLemma `lattice-le-order` [⌜free-dist-lattice-with-constraints(T;eq;x.Cs[x])⌝]⋅ THEN Auto) }

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Latex:

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Latex:

1.  T  :  Type
2.  eq  :  EqDecider(T)
3.  Cs  :  T  {}\mrightarrow{}  fset(fset(T))
4.  s  :  fset(T)
5.  \muparrow{}fset-contains-none(eq;s;x.Cs[x])
6.  deq-fset(deq-fset(eq))  \mmember{}  EqDecider(Point(free-dist-lattice-with-constraints(T;eq;x.Cs[x])))
7.  \{s\}  \mmember{}  Point(free-dist-lattice-with-constraints(T;eq;x.Cs[x]))
8.  \mforall{}[s:fset(Point(free-dist-lattice-with-constraints(T;eq;x.Cs[x])))].
      \mforall{}[x:Point(free-dist-lattice-with-constraints(T;eq;x.Cs[x]))].
          /\mbackslash{}(s)  \mleq{}  x  supposing  x  \mmember{}  s
9.  \mforall{}[s:fset(Point(free-dist-lattice-with-constraints(T;eq;x.Cs[x])))].
      \mforall{}[v:Point(free-dist-lattice-with-constraints(T;eq;x.Cs[x]))].
          ((\mforall{}x:Point(free-dist-lattice-with-constraints(T;eq;x.Cs[x])).  (x  \mmember{}  s  {}\mRightarrow{}  v  \mleq{}  x))  {}\mRightarrow{}  v  \mleq{}  /\mbackslash{}(s))
10.  \{s\}  \mleq{}  /\mbackslash{}(\mlambda{}x.free-dlwc-inc(eq;a.Cs[a];x)"(s))
11.  /\mbackslash{}(\mlambda{}x.free-dlwc-inc(eq;a.Cs[a];x)"(s))  \mleq{}  \{s\}
\mvdash{}  /\mbackslash{}(\mlambda{}x.free-dlwc-inc(eq;a.Cs[a];x)"(s))  =  \{s\}


By

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Latex:
(InstLemma  `lattice-le-order`  [\mkleeneopen{}free-dist-lattice-with-constraints(T;eq;x.Cs[x])\mkleeneclose{}]\mcdot{}  THEN  Auto)

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