Department of Mathematics, Science Faculty, Selçuk University, 42003 Konya, Turkey
Academic Editor: S. S. Dragomir
Copyright © 2010 Ramazan Türkmen and Zübeyde Ulukök. This is an open access article distributed under the
Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
We present some lower bounds for the Frobenius condition number of a positive definite matrix depending on trace, determinant, and Frobenius norm of a positive definite matrix and compare these results with other results. Also, we give a relation for the cosine of the angle between two given real matrices.