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D.15.3.8 sum_of_powers
Procedure from librarychern.lib (see chern_lib).
- Usage:
- sum_of_powers(k, l); k non-negative integer, l list of polynomials
- Return:
- polynomial
- Purpose:
- computes the sum of k-th powers of the entries of l
- Note:
- returns 0 if k is negative
LIB "chern.lib"; ring r = 0, (x, y, z), dp; list l=x, y, z; //sum of 7-th powers of x, y, z print( sum_of_powers(7, l) ); ==> x7+y7+z7 |