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On products of some Toeplitz operators on polyanalytic Fock spaces

Irène Casseli (2020)

Czechoslovak Mathematical Journal

The purpose of this paper is to study the Sarason’s problem on Fock spaces of polyanalytic functions. Namely, given two polyanalytic symbols f and g , we establish a necessary and sufficient condition for the boundedness of some Toeplitz products T f T g ¯ subjected to certain restriction on f and g . We also characterize this property in terms of the Berezin transform.

On representations of real analytic functions by monogenic functions

Hongfen Yuan (2019)

Czechoslovak Mathematical Journal

Using the method of normalized systems of functions, we study one representation of real analytic functions by monogenic functions (i.e., solutions of Dirac equations), which is an Almansi’s formula of infinite order. As applications of the representation, we construct solutions of the inhomogeneous Dirac and poly-Dirac equations in Clifford analysis.

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