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7.7.9.0. lst2str
Procedure from library freegb.lib (see freegb_lib).
- Usage:
- lst2str(L[,n]); L a list of modules, n an optional integer
- Return:
- list (of strings)
- Purpose:
- convert a list (of modules) into polynomials in free algebra
- Note:
- if an optional integer is not 0, stars signs are used in multiplication
Example:
| | LIB "freegb.lib";
ring r = 0,(x,y,z),(dp(1),dp(2));
module M = [-1,x,y],[-7,y,y],[3,x,x];
module N = [1,x,y,x,y],[-2,y,x,y,x],[6,x,y,y,x,y];
list L; L[1] = M; L[2] = N;
lst2str(L);
==> [1]:
==> -xy-7yy+3xx
==> [2]:
==> xyxy-2yxyx+6xyyxy
lst2str(L[1],1);
==> [1]:
==> -x*y-7*y*y+3*x*x
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