NuprlPrimitives Sections NuprlLIB Doc
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Def f{m..n} == if nm nil else f(m).f{(m+1)..n} fi  (recursive)

is mentioned by

Thm* as:T List. (i.as[i]){||as||} = as[sfa_doc_listify_select_id]

In prior sections: list 1

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NuprlPrimitives Sections NuprlLIB Doc