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7.7.3.0. Sannfslog
Procedure from library dmod.lib (see dmod_lib).

Usage:
Sannfslog(f [,eng]); f a poly, eng an optional int

Return:
ring

Purpose:
compute the D-module structure of basering[1/f]*f^s

Note:
activate the output ring with the setring command.
In the output ring D[s], the ideal LD1 is generated by the elements
in Ann F^s in D[s], coming from logarithmic derivations.
If eng <>0, std is used for Groebner basis computations,
otherwise, and by default slimgb is used.

Display:
If printlevel=1, progress debug messages will be printed,
if printlevel>=2, all the debug messages will be printed.

Example:
 


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