Step
*
of Lemma
lattice_properties
∀[l:Lattice]
((∀[a,b:Point(l)]. (a ∧ b = b ∧ a ∈ Point(l)))
∧ (∀[a,b:Point(l)]. (a ∨ b = b ∨ a ∈ Point(l)))
∧ (∀[a,b,c:Point(l)]. (a ∧ b ∧ c = a ∧ b ∧ c ∈ Point(l)))
∧ (∀[a,b,c:Point(l)]. (a ∨ b ∨ c = a ∨ b ∨ c ∈ Point(l)))
∧ (∀[a,b:Point(l)]. (a ∨ a ∧ b = a ∈ Point(l)))
∧ (∀[a,b:Point(l)]. (a ∧ a ∨ b = a ∈ Point(l))))
BY
{ ((D 0 THENA Auto) THEN D -1 THEN (Unhide THENA Auto) THEN D -1 THEN Auto) }
Latex:
Latex:
\mforall{}[l:Lattice]
((\mforall{}[a,b:Point(l)]. (a \mwedge{} b = b \mwedge{} a))
\mwedge{} (\mforall{}[a,b:Point(l)]. (a \mvee{} b = b \mvee{} a))
\mwedge{} (\mforall{}[a,b,c:Point(l)]. (a \mwedge{} b \mwedge{} c = a \mwedge{} b \mwedge{} c))
\mwedge{} (\mforall{}[a,b,c:Point(l)]. (a \mvee{} b \mvee{} c = a \mvee{} b \mvee{} c))
\mwedge{} (\mforall{}[a,b:Point(l)]. (a \mvee{} a \mwedge{} b = a))
\mwedge{} (\mforall{}[a,b:Point(l)]. (a \mwedge{} a \mvee{} b = a)))
By
Latex:
((D 0 THENA Auto) THEN D -1 THEN (Unhide THENA Auto) THEN D -1 THEN Auto)
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