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Step * of Lemma has-value-ifthenelse-type

∀[a,b,c:Base].  a ∈ Top + Top supposing (if a then b else c fi )↓
BY
{ (Auto THEN RepUR ``ifthenelse`` (-1) THEN HasValueD (-1) THEN Auto) }

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Latex:

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Latex:
\mforall{}[a,b,c:Base].    a  \mmember{}  Top  +  Top  supposing  (if  a  then  b  else  c  fi  )\mdownarrow{}


By

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Latex:
(Auto  THEN  RepUR  ``ifthenelse``  (-1)  THEN  HasValueD  (-1)  THEN  Auto)

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