|  |  7.10.2.1 operatorAlgebra Procedure from libraryfpalgebras.lib(see  fpalgebras_lib).
 
Example:Usage:
operatorAlgebra(a,d); a a string, d an integer
Return:
ring
Note:
- the ring contains the ideal I, which contains the required relations
- a gives the name of the algebra
- d gives the degreebound for the Letterplace ring
 
a must be one of the following:
integrodiff3
 toeplitz
 weyl1
 usl2
 usl2h
 shift1inverse
 exterior2
 quadrowmm
 shift1
 weyl1inverse
 
This is a collection of common algebras.
 
 |  | LIB "fpalgebras.lib";
def R = operatorAlgebra("integrodiff3",5); setring R;
I; //relations of the algebra
==> I[1]=-x*D+D*x-1
==> I[2]=II*II-x*II+II*x
==> I[3]=D*II-1
 | 
 
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