Yevgeniy SAMOILENKO Institute of Mathematics of NAS of Ukraine,
3 Tereshchenkivs'ka Str.,
01601 Kyiv,
UKRAINE
E-mail: sam7@imath.kiev.ua
On spectrum of matrix Hankel and Toeplitz operators
Abstract: We study operator-valued matrices, the entries of which are Toeplitz
or Hankel operators with symbols that are piecewise continuous on $S^{1}$,
and find the spectrum of such matrices.