Marcos S. Ferreira

collaborators

2 papers

math.FA2023

On the invariant subspace problem via universal Toeplitz operators on the Hardy space $H^{2} (D^{2})$

João Marcos R. do Carmo, Marcos S. Ferreira

The Invariant Subspace Problem (ISP) for Hilbert spaces asks if every bounded linear operator has a non-trivial closed invariant subspace. Due to the existence of universal operato…

math.FA2022

A characterization for complex symmetric Toeplitz operators

Marcos S. Ferreira

In this paper we use orthonormal basis for the Hardy space $H^{2} (T)$ , formed by rational functions, to characterize complex symmetric Toeplitz operators on $H^{2}(\mathbb…

On the invariant subspace problem via universal Toeplitz operators on the Hardy space H2(D2)

A characterization for complex symmetric Toeplitz operators

On the invariant subspace problem via universal Toeplitz operators on the Hardy space $H^{2} (D^{2})$