WhoCites Definitions list 1 Sections StandardLIB Doc
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Who Cites firstn?
firstnDef firstn(n;as)
Def == Case of as; nil  nil ; a.as'  if 0<n a.firstn(n-1;as') else nil fi
Def (recursive)
Thm* A:Type, as:A List, n:. firstn(n;as A List
lt_intDef i<j == if i<j true ; false fi
Thm* i,j:. (i<j 

Syntax:firstn(n;as) has structure: firstn(nas)

About:
listconsnillist_indbool
bfalsebtrueifthenelseintnatural_numbersubtract
lessrecursive_def_noticeuniversememberall
!abstraction
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WhoCites Definitions list 1 Sections StandardLIB Doc