Step * of Lemma is-dag-map

[T,S:Type]. ∀[f:T ─→ S]. ∀[g:LabeledGraph(T)].  is-dag(lg-map(f;g)) supposing is-dag(g)
BY
(Auto
   THEN (InstLemma `lg-size-map` [⌈T⌉;⌈S⌉;⌈f⌉;⌈g⌉]⋅ THENA Auto)
   THEN RepeatFor (ParallelOp -2)
   THEN RepeatFor (ParallelLast)
   THEN FLemma `lg-edge-map` [-1]
   THEN Auto) }


Latex:



Latex:
\mforall{}[T,S:Type].  \mforall{}[f:T  {}\mrightarrow{}  S].  \mforall{}[g:LabeledGraph(T)].    is-dag(lg-map(f;g))  supposing  is-dag(g)


By


Latex:
(Auto
  THEN  (InstLemma  `lg-size-map`  [\mkleeneopen{}T\mkleeneclose{};\mkleeneopen{}S\mkleeneclose{};\mkleeneopen{}f\mkleeneclose{};\mkleeneopen{}g\mkleeneclose{}]\mcdot{}  THENA  Auto)
  THEN  RepeatFor  2  (ParallelOp  -2)
  THEN  RepeatFor  2  (ParallelLast)
  THEN  FLemma  `lg-edge-map`  [-1]
  THEN  Auto)




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