Top
Back: option
Forward: ordstr
FastBack: Functions and system variables
FastForward: Control structures
Up: Functions
Top: Singular Manual
Contents: Table of Contents
Index: Index
About: About this document

5.1.106 ord

Syntax:
ord ( poly_expression )
ord ( vector_expression )
Type:
int
Purpose:
returns the (weighted) degree of the initial term of a polynomial or a vector; the weights are the weights used for the first block of the ring ordering.
Note:
ord(0) is -1.
In a global degree ordering ord is the same as deg.
Example:
 
  ring r=7,(x,y),wp(2,3);
  ord(0);
==> -1
  poly f=x2+y3;  // weight on y is 3
  ord(f),deg(f);
==> 9 9
  ring R=7,(x,y),ws(2,3);
  poly f=x2+y3;
  ord(f),deg(f);
==> 4 9
  vector v=[x2,y];
  ord(v),deg(v);
==> 3 4
See deg; poly; vector.

Top Back: option Forward: ordstr FastBack: Functions and system variables FastForward: Control structures Up: Functions 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.