Usage
eigenring L
eigenring A
Parameter | Type | Description |
---|---|---|
L |
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A difference operator |
A |
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A matrix of fractions |
Description
eigenring(L) returns a basisof the eigenring of L, i.e.the set of operators
of order strictly less than the order of L and such that
for some operator S.
eigenring(A) returns anby
matrix
such that
for a basis of the eigenring of
, i.e. the set of matrices
such that
.
Example
We compute the eigenring of the difference equation
as follows:
1 --> L := E^2-2*n*(n+1); 2 --> e := eigenring(L); 3 --> tex(e);
Usage within MAPLE
When using eigenring(A,D,x) from inside MAPLE, the matrixreturned from SHASTA is transformed into the array of matrices
.