TY  - JOUR
ID  - Rudol2007
LB  - Rudol2007
AU  - Rudol, Krzysztof
TI  - Spectra of subnormal pairs
ST  - Spectra of subnormal pairs
JO  - Opuscula Math.
JA  - Opuscula Math.
JF  - Opuscula Mathematica
PY  - 2007
VL  - 27
IS  - 2
SP  - 301
EP  - 304
DO  - http://dx.doi.org/10.7494/OpMath.2007.27.2.301
UR  - http://dx.doi.org/10.7494/OpMath.2007.27.2.301
AB  - In this short note we present an example related to joint spectra of subnormal pairs of bounded operators. A counterexample to the equality between Taylor's spectrum and the closure of the defect spectrum is given. This example is related to the author's modification of N. Sibony's counterexample to Corona Theorem on domains that fail to be strictly pseudoconvex.
KW  - subnormal operator
KW  - corona
KW  - joint spectrum
SN  - 1232-9274
ER  -