Talk:Logarithmically concave function

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I wouldn't say this entry belongs to the Category Elementary algebra. Logarithmically convex function is in Category:Real analysis.--Kompik 17:27, 5 June 2006 (UTC)

The statement

Examples of log-concave functions are the indicator functions of convex sets.

in the current version of the article seems incorrect to me -- the logarithm of a function which attains zero value is not defined. Or have I missed something -- perhaps the indicator function was meant in some other sens? --Kompik 20:55, 28 January 2007 (UTC)