%0 Journal Article
	%A Kui Du
	%D 2010
	%J International Journal of Mathematical and Computational Sciences
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 44, 2010
	%T The Ratios between the Spectral Norm, the Numerical Radius and the Spectral Radius
	%U https://publications.waset.org/pdf/11448
	%V 44
	%X Recently, Uhlig [Numer. Algorithms, 52(3):335-353, 2009] proposed open questions about the ratios between the spectral norm, the numerical radius and the spectral radius of a square matrix. In this note, we provide some observations to answer these questions.

	%P 1113 - 1116