Abstract:In the group Aut k (A 1 (k)) of k-automorphisms of A 1 = A 1 (k) (the first Weyl algebra on a field k of any characteristic p ≥ 0), we solve the following problem: Find ∈ Aut k (A 1 ), such that. This problem is a particular case of the general problem of Stafford (1987) on isomorphisms between two k-algebras and both Morita equivalent to A 1 . In this paper, we study affine algebraic curves X (b) introduced by Letzter (1992) and Perkins (1991) and their algebra of differential operators (X(b)). Due to the res… Show more
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