Top
Back: iv2lpList
Forward: lp2iv
FastBack: dmodvar_lib
FastForward: freegb_lib
Up: fpadim_lib
Top: Singular Manual
Contents: Table of Contents
Index: Index
About: About this document
7.7.7.0. iv2lpMat
Procedure from library fpadim.lib (see fpadim_lib).

Usage:
iv2lpMat(M); M an intmat

Return:
ideal

Purpose:
Converting an intmat into an ideal of the corresponding monomials.
The rows of the intmat corresponds to an intvec, which stores the
monomial.
For the encoding of the variables see the overview.

Assume:
- The rows of M must correspond to Letterplace monomials
- basering has to be a Letterplace ring

Example:
 
LIB "fpadim.lib";
ring r = 0,(x,y,z),dp;
def R = makeLetterplaceRing(5); // constructs a Letterplace ring
setring R; // sets basering to Letterplace ring
intmat u[3][1] = 1,1,2; intmat v[1][3] = 2,1,3; intmat w[2][3] = 3,1,1,2,3,1;
// defines intmats of different size containing intvec representations of
// monomials as rows
iv2lpMat(u); // returns the monomials contained in u
==> _[1]=x(1)
==> _[2]=x(1)
==> _[3]=y(1)
iv2lpMat(v); // returns the monomials contained in v
==> _[1]=y(1)*x(2)*z(3)
iv2lpMat(w); // returns the monomials contained in w
==> _[1]=z(1)*x(2)*x(3)
==> _[2]=y(1)*z(2)*x(3)


Top Back: iv2lpList Forward: lp2iv FastBack: dmodvar_lib FastForward: freegb_lib Up: fpadim_lib Top: Singular Manual Contents: Table of Contents Index: Index About: About this document
            User manual for Singular version 4-0-3, 2016, generated by texi2html.