Bisingular (ρ,δ) pseudodifferential operators on products of compact Lie groups

2026/07/28 by G. Drei, S. Federico, A. Parmeggiani
Mathematics · #math.AP

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Abstract

In this paper we develop the (ρ,δ) calculus of bisingular pseudodifferential operators on the product compact Lie groups, which extends the one that was earlier introduced by the second and third authors in the (1,0) case. The (ρ,δ) case is the calculus suitable to construct parametrices of hypoelliptic operators on G₁× G₂.

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