Bisingular $(\rho,\delta)$ pseudodifferential operators on products of compact Lie groups

G. Drei; S. Federico; A. Parmeggiani

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arXiv · 2607.25821

Bisingular $(\rho,\delta)$ pseudodifferential operators on products of compact Lie groups

G. Drei·S. Federico·A. Parmeggiani

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Abstract

In this paper we develop the $(\rho,\delta)$ 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 $(\rho,\delta)$ case is the calculus suitable to construct parametrices of hypoelliptic operators on $G_1\times G_2$.

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G. Drei, S. Federico, A. Parmeggiani. 2026-07-28. Bisingular $(\rho,\delta)$ pseudodifferential operators on products of compact Lie groups. https://arxiv.org/abs/2607.25821

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