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AlffOrderTransformationMatrix
Returns a list containing information about the
transformation from the alffsuborder of the given alfforder to
the given alfforder.
Syntax:
L := AlffOrderTransformationMatrix(O);
Description:
The list L contains the denominator d
and the n \times n-matrix T with
(\alpha|1, … ,\alpha|n) = frac{1}{d} (a|1, … ,a|n)T,
where \alpha|1, … ,\alpha|n is a basis of the given alfforder
O and a|1, … ,a|n is a basis of the alffsuborder of the
given order.
If the order O is the equation order, simply d = 1 and
T = id are returned.
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