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5.1.51 gen

Syntax:
gen ( int_expression )
Type:
vector
Purpose:
returns the i-th free generator of a free module.
Example:
 
  ring r=32003,(x,y,z),(c,dp);
  gen(3);
==> [0,0,1]
  vector v=gen(5);
  poly f=xyz;
  v=v+f*gen(4); v;
==> [0,0,0,xyz,1]
  ring rr=32003,(x,y,z),dp;
  fetch(r,v);
==> xyz*gen(4)+gen(5)
See freemodule; int; vector.

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