Another proof of a conjecture of marcus on the c-numerical range

Linear and Multilinear Algebra

Volumn 41, Issue 1, 1996, Pages 35-40

  Bebiano, Natália ^a   Da Providência, Joäo ^b  

^a UNIVERSITY OF COIMBRA   (Portugal)

^b UNIVERSITY OF COIMBRA   (Portugal)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0347735078     PISSN: 03081087     EISSN: None     Source Type: Journal    
DOI: 10.1080/03081089608818459     Document Type: Article

References (11)

1. Au-Yeung and N.-K. Tsing, A Conjecture of Marcus on the Generalized Numerical Range, Linear and Multilinear Algebra 14 (1983), 235-239.
2. Au-Yeung and K. C. Ng, A Remark on a Conjecture of Marcus on the Generalized Numerical Range, Glasgow Math. J. 24 (1983), 191-194.
3. c(A), Linear and Multilinear Algebra 19 (1986), 249 -257.
4. N. Bebiano and J. da Providência, Some Geometrical Properties of the c-Numerical Range of a Normal Matrix, Linear and Multilinear Algebra, 37 (1994).
5. M. Goldberg, On Certain Finite Dimensional Numerical Ranges and Numerical Radii, Linear and Multilinear Algebra 7 (1979), 329-342.
6. C.-K. Li, C-Numerical Ranges and C-Numerical Radii, Linear and Multilinear Algebra 37 (1994), 51-82.
7. M. Marcus, Some Combinatorial Aspects of the Numerical Range, Ann. New York Acad. Sci. 319 (1979), 368-376.
8. H. Nakazato, Y. Nishikawa and M. Takaguchi, On the Boundary of the c-Numerical Range of a Matrix, Linear and Multilinear Algebra, to appear.
9. R. Westwick, A Theorem on Numerical Range, Linear and Multilinear Algebra 2 (1975), 311-315.
10. Y. T. Poon, Another Proof of a Result of Westwick, Linear and Multilinear Algebra 9 (1980), 35-37.
11. N. K. Tsing, On the Shape of the Generalized Numerical Range, Linear and Multilinear Algebra 10 (1981), 173-182.