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A publicação pode ser exportada nos seguintes formatos: referência da APA (American Psychological Association), referência do IEEE (Institute of Electrical and Electronics Engineers), BibTeX e RIS.

Exportar Referência (APA) 
Carvalho, L., Diogo, C., Mendes, S. & Soares, H. (N/A). A note on the essential numerical range of block diagonal operators. Forum Mathematicum. N/A
Exportar Referência (IEEE) 
L. C. Carvalho et al.,  "A note on the essential numerical range of block diagonal operators", in Forum Mathematicum, vol. N/A, N/A
Exportar BibTeX 
@article{carvalhoN/A_1715406340827,
	author = "Carvalho, L. and Diogo, C. and Mendes, S. and Soares, H.",
	title = "A note on the essential numerical range of block diagonal operators",
	journal = "Forum Mathematicum",
	year = "N/A",
	volume = "N/A",
	number = "",
	doi = "10.1515/forum-2023-0166",
	url = "https://www.degruyter.com/document/doi/10.1515/forum-2023-0166/html"
}
Exportar RIS 
TY  - JOUR
TI  - A note on the essential numerical range of block diagonal operators
T2  - Forum Mathematicum
VL  - N/A
AU  - Carvalho, L.
AU  - Diogo, C.
AU  - Mendes, S.
AU  - Soares, H.
PY  - N/A
SN  - 0933-7741
DO  - 10.1515/forum-2023-0166
UR  - https://www.degruyter.com/document/doi/10.1515/forum-2023-0166/html
AB  - In this note we characterize the essential numerical range of a block diagonal operator T = ⊕i T_i in terms of the numerical ranges {W (T_i )}i of its components. Specifically, the essential numerical range of T is the convex hull of the limit superior of {W (Ti )}i . This characterization can be simplified further. In fact, we prove the existence of a decomposition of T for which the convex hull is not required.
ER  -