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(the least number i such that p(i))

Who Cites least?
leastDef  least i:p(i) == if p(0) 0 else (least i:p(i+1))+1 fi  (recursive)
Thm*  k:p:{p:(k)| i:kp(i) }. (least i:p(i))  k
Thm*  p:{p:()| i:p(i) }. (least i:p(i))  

Syntax:least i:p(i) has structure: least(i.p(i))

About:
boolifthenelseassertnatural_numberaddsetfunction
recursive_def_noticememberallexists!abstraction
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WhoCites Definitions DiscreteMath Sections DiscrMathExt Doc