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Step * of Lemma rtermSubtract-left_wf

∀[v:rat_term()]. rtermSubtract-left(v) ∈ rat_term() supposing ↑rtermSubtract?(v)
BY
{ DepprodCoDatatypeSelectorWf }

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Latex:

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Latex:
\mforall{}[v:rat\_term()].  rtermSubtract-left(v)  \mmember{}  rat\_term()  supposing  \muparrow{}rtermSubtract?(v)


By

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Latex:
DepprodCoDatatypeSelectorWf

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