4.20.1 vector declarations

Syntax:

vector name = vector_expression ;

Purpose:

defines a vector of polynomials (an element of a free module).

Default:

[0]

Example:

ring r=0,(x,y,z),(c,dp); poly s1 = x2; poly s2 = y3; poly s3 = z; vector v = [s1, s2-s1, s3-s1]+ s1*gen(5); // v is a vector in the free module of rank 5 v; ==> [x2,y3-x2,-x2+z,0,x2]