D.5.8.14 tjurina
................
Procedure from library sing.lib (see sing_lib).

Usage:
tjurina(id); id=ideal or poly

Assume:
id=ICIS (isolated complete intersection singularity)

Return:
int = Tjurina number of id

Note:
Tjurina number = -1 implies that id is not an ICIS

Example:
LIB "sing.lib";
ring r=32003,(x,y,z),(c,ds);
ideal j=x2+y2+z2,x2+2y2+3z2;
tjurina(j);
==> 5

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&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; User manual for <a href="http://www.singular.uni-kl.de/"><i>Singular</i></a> version 2-0-4, October 2002,
generated by <a href="http://www.gnu.org/software/texinfo/"><i>texi2html</i></a>.
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