Some algebraic properties of differential operators

Details Some algebraic properties of differential operators Some algebraic properties of differential operators

2012-01-10

arxiv.org/abs/1201.1992v1

Mathematics

Rings and Algebras

15 pages

Scientific paper

First, we study the subskewfield of rational pseudodifferential operators over a differential field K generated in the skewfield of pseudodifferential operators over K by the subalgebra of all differential operators. Second, we show that the Dieudonne' determinant of a matrix pseudodifferential operator with coefficients in a differential subring A of K lies in the integral closure of A in K, and we give an example of a 2x2 matrix differential operator with coefficients in A whose Dieudonne' determiant does not lie in A.

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