description:iscyceq = NCisCycEq(f,g) checks whether polynomials f and g are cyclically equivalent, i.e., whether f - g is a sum of commutators. arguments:f and g are NCpolys representing the polynomials. If the function is called with only one parameter, g is assumed to be 0. That is, NCisCycEq(f) checks whether f is a sum of commutators . output:iscyceq equals 1 if polynomials f and g are cyclically equivalent and 0 otherwise possible usage:NCisCycEq(f,g), NCisCycEq(f) example:>> NCisCycEq(x^2*y*x+y*x^3,2*x*y*x^2) ans = 1 |

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