Finite rank Bargmann–Toeplitz operators with non-compactly supported symbols

Artikel i vetenskaplig tidskrift, 2012

Theorems about characterization of finite rank Toeplitz operators in Fock–Segal–Bargmann spaces, known previously only for symbolswith compact support, are carried over to symbols without that restriction, however with a rather rapid decay at infinity. The proof is based upon a new version of the Stone–Weierstrass approximation theorem.