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D.15.2.14 negativeformaldivisor

Procedure from library divisors.lib (see divisors_lib).

Usage:
negativeformaldivisor(A); A = formaldivisor.

Assume:
A is a formaldivisor on X.

Return:
a formal divisor on X

Theory:
The procedure will change the signs of the coefficients.

Example:
 


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            User manual for Singular version 3-1-6, Dec 2012, generated by texi2html.