Mathematics – Analysis of PDEs
Scientific paper
2004-11-01
Mathematics
Analysis of PDEs
Scientific paper
In this note we show that $k$-convex functions on $\Bbb R^n$ are twice
differentiable almost everywhere for every positive integer $k>n/2$. This
generalizes the classical Alexsandrov's theorem for convex functions.
Chaudhuri Nirmalendu
Trudinger Neil S.
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