Norouzi

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Name Norouzi
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Seen Jan 28 at 23:34
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Dec
7
 revised Convex upper bound on a linear-fractional function
edited title
Dec
6
 answered Convex upper bound on a linear-fractional function
Dec
6
 revised Convex upper bound on a linear-fractional function
added 106 characters in body
Dec
6
 comment Convex upper bound on a linear-fractional function
The function f is quasiliner. It has convex parts eg. when one sets $x=1$ and only varies $y$, $f(x,y) = f(y) = \frac{1}{c+y}$, and concave parts, eg. when one sets $y = x$, and so $f(x,y) = f(x) = \frac{x}{c+x}$. I would like to find a convex upper-bound for $f$ if possible.
Dec
6
 revised Convex upper bound on a linear-fractional function
deleted 9 characters in body
Dec
5
 asked Convex upper bound on a linear-fractional function