MathGroup Archive 2004

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Re: Min[], Max[]


Frank Brand wrote:

> Dear newsgroup members,
> 
> can anyone explain me what´s the sense in the definition of
> 
> Min[{}]= Infinity and Max[{}]= -Infinity

You need that empty definition to unify the relations

Min[A]>=Min[B]  if A \subseteq B

Max[A]<=Max[B]  if A \subseteq B

since the empty set is a subset of every set.

-- 

Roland Franzius


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