Che Man Cheng, Raymond
University of Macau
Che Man CHENG, Raymond is associate professor at University of Macau. He received his PhD in Mathematics from The University of Hong Kong, Hong Kong.
Matrix theory, including numerical ranges, eigenvalues and singular values, norms of commutators, and Hurwitz matrix equations
Cheng CM. An approximation problem with respect to symmetric gauge functions with application to matrix spaces. Linear and Multilinear Algebra. 1991 Jul 1;29(3-4):169-80.
Cheng CM. Two results on C-congruence numerical radii. Tamkang J. Math. 1990;21:59-64.
Cheng CM. A note on interlacing polynomials. Southeast Asian Bull. Math. 1990;14:25-6.