Step
*
of Lemma
itermSubtract?_wf
∀[v:int_term()]. (itermSubtract?(v) ∈ 𝔹)
BY
{ DepprodCoDatatypeRecognizerWf }
Latex:
Latex:
\mforall{}[v:int\_term()].  (itermSubtract?(v)  \mmember{}  \mBbbB{})
By
Latex:
DepprodCoDatatypeRecognizerWf
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