RT Journal Article
T1 Power-regular Bishop operators and spectral decompositions
A1 Gallardo Gutiérrez, Eva Antonia
A1 Monsalve López, Miguel
AB It is proved that a wide class of Bishop-type operators $T_{\phi,\tau}$ are power-regular operators in $L^p(\Omega, \mu)$, $1 \leq p < \infty$, computing the exact value of the local spectral radius at any function $u \in L^p(\Omega, \mu)$. Moreover, it is shown that the local spectral radius at any $u$ coincides with the spectral radius of $T_{\phi,\tau}$ as far as u is non-zero. As a consequence, it is proved that non-invertible Bishop-type operators are non-decomposable whenever $\log|\phi| \in L^1(\Omega, \mu)$ (in particular, not quasinilpotent); not enjoying even the weaker spectral decompositions Bishop property $(\beta)$ and property $(\delta)$.
PB Theta Foundation
YR 2021
FD 2021
LK https://hdl.handle.net/20.500.14352/129352
UL https://hdl.handle.net/20.500.14352/129352
LA eng
NO Gallardo-Gutiérrez, E. A. , Monsalve-López, M., Power-regular Bishop operators and spectral decomposition. J. Operator Theory. 2021; 85 (2): 403-416.
NO European Comission
NO Ministerior de Economía y Competitividad
NO Universidad Complutense de Madrid
DS Docta Complutense
RD 31 dic 2025