Bisingular $(ρ,δ)$ pseudodifferential operators on products of compact Lie groups
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 $G_1\times G_2$.
math.AP↗