1

Lie Derivations of Triangular Algebras

Cheung, Wai-Shun
Journal:
Linear and Multilinear Algebra
Year:
2003
Language:
english
File:
PDF, 160 KB
english, 2003
2

A three-dimensional voting system in Hong Kong

Cheung, Wai-Shun, Ng, Tuen-Wai
Journal:
European Journal of Operational Research
Year:
2014
Language:
english
File:
PDF, 442 KB
english, 2014
3

The C -numerical range of matrices is star-shaped

Cheung, Wai-Shun, Tsing, Nam-Kiu
Journal:
Linear and Multilinear Algebra
Year:
1996
Language:
english
File:
PDF, 252 KB
english, 1996
5

Multiplicative preservers and induced operators

Wai-Shun Cheung, M. Antonia Duffner, Chi-Kwong Li
Journal:
Linear Algebra and its Applications
Year:
2005
Language:
english
File:
PDF, 271 KB
english, 2005
7

Multiplicative preservers on semigroups of matrices

Wai-Shun Cheung, Shaun Fallat, Chi-Kwong Li
Journal:
Linear Algebra and its Applications
Year:
2002
Language:
english
File:
PDF, 116 KB
english, 2002
9

Maximizing the numerical radii of matrices by permuting their entries

Cheung, Wai-Shun, Li, Chi-Kwong
Journal:
Linear and Multilinear Algebra
Year:
2014
Language:
english
File:
PDF, 187 KB
english, 2014
10

Multiplicative Maps With Specified (1, 1)-Entry

Cheung, Wai-Shun
Journal:
Linear and Multilinear Algebra
Year:
2003
Language:
english
File:
PDF, 120 KB
english, 2003
11

Pfaffian and decomposable numerical range of a complex skew symmetric matrix

Cheung, Wai-Shun, Tam, Tin-Yau
Journal:
Linear and Multilinear Algebra
Year:
2009
Language:
english
File:
PDF, 186 KB
english, 2009
12

On the boundary of rank- k numerical ranges

Cheung, Wai-Shun
Journal:
Linear and Multilinear Algebra
Year:
2014
Language:
english
File:
PDF, 121 KB
english, 2014
13

On the boundary of weighted numerical ranges

Cheung, Wai-Shun
Journal:
Linear and Multilinear Algebra
Year:
2016
Language:
english
File:
PDF, 360 KB
english, 2016
14

Isometries between matrix algebras

Cheung, Wai-Shun, Li, Chi-Kwong, Poon, Yiu-Tung
Journal:
Journal of the Australian Mathematical Society
Year:
2004
Language:
english
File:
PDF, 577 KB
english, 2004
15

New pairs of matrices with convex generalized numerical ranges

Cheung, Wai-Shun
Journal:
Linear and Multilinear Algebra
Year:
2016
Language:
english
File:
PDF, 955 KB
english, 2016
17

Linear Maps Transforming the Unitary Group

Cheung, Wai-Shun, Li, Chi-Kwong
Journal:
Canadian Mathematical Bulletin
Year:
2003
Language:
english
File:
PDF, 107 KB
english, 2003