Step * of Lemma dM-to-FL-sq

[I,J,v:Top].  (dM-to-FL(I;v) dM-to-FL(J;v))
BY
((UnivCD THENA Auto)
   THEN (RepUR ``dM-to-FL lattice-extend lattice-fset-join lattice-join lattice-0 lattice-1`` 0
         THEN RepUR ``lattice-fset-meet lattice-meet union-deq`` 0
         )
   THEN EqCD) }

1
1. Top
2. Top
3. Top
⊢ λx,y. (face_lattice(I)."join" y) ~ λx,y. (face_lattice(J)."join" y)

2
1. Top
2. Top
3. Top
⊢ face_lattice(I)."0" face_lattice(J)."0"

3
1. Top
2. Top
3. Top
⊢ λxs.reduce(λx,y. (face_lattice(I)."meet" y);1;λx.case of inl(a) => (a=1) inr(a) => (a=0)"(xs))"(v) 
~ λxs.reduce(λx,y. (face_lattice(J)."meet" y);1;λx.case of inl(a) => (a=1) inr(a) => (a=0)"(xs))"(v)


Latex:


Latex:
\mforall{}[I,J,v:Top].    (dM-to-FL(I;v)  \msim{}  dM-to-FL(J;v))


By


Latex:
((UnivCD  THENA  Auto)
  THEN  (RepUR  ``dM-to-FL  lattice-extend  lattice-fset-join  lattice-join  lattice-0  lattice-1``  0
              THEN  RepUR  ``lattice-fset-meet  lattice-meet  union-deq``  0
              )
  THEN  EqCD)




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