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math.RA2012★ 13 cited
Rational matrix pseudodifferential operators
Sylvain Carpentier, Alberto De Sole, Victor G. Kac
The skewfield K(d) of rational pseudodifferential operators over a differential field K is the skewfield of fractions of the algebra of differential operators K[d]. In our previous…
math.RA2012★ 14 cited
Some algebraic properties of differential operators
Sylvain Carpentier, Alberto De Sole, Victor G. Kac
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 subal…