NCisConvex

description:

isConvex = NCisConvex(f) checks if the polynomial f is convex without SDP.

arguments:

f is an NCpoly representing a polynomial

output:

isConvex equals 1 if the polynomial f is convex and 0 otherwise

possible usage:

NCisConvex(f)

example:

>> isConvex=NCisConvex(x^2+x*y+y*x+2*y^2+z^2-1)

isConvex = 1