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D.6.13.9 locstd

Procedure from library sing.lib (see sing_lib).

Usage:
locstd (id); id = ideal

Return:
a standard basis for a local degree ordering

Note:
the procedure homogenizes id w.r.t. a new 1st variable @t@, computes a SB w.r.t. (dp(1),dp) and substitutes @t@ by 1.
Hence the result is a SB with respect to an ordering which sorts first w.r.t. the order and then refines it with dp. This is a local degree ordering.
This is done in order to avoid cancellation of units and thus be able to use option(contentSB);

Example:
 


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