IAM 02674
INSTITUTO ARGENTINO DE MATEMATICA ALBERTO CALDERON
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Spectral enclosures for a class of block operator matrices
Autor/es:
FRANCISCO MARTÍNEZ PERÍA
Lugar:
Lisboa
Reunión:
Workshop; 30th International Workshop on Operator Theory and its Applications; 2019
Institución organizadora:
Instituto Superior Técnico - Universidad de Lisboa
Resumen:
We present new spectral enclosures for the non-real spectrum of a class of 2×2 block operator matrices with self-adjoint operators A and D on the diagonal and operators B and −B∗ as off-diagonal entries. Our main result resembles Gershgorin's circle theorem.
