Dear Colleagues,

We continue our Colloquium in the Math Department.

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Charles Johnson

Department of Mathematics

College of William and Mary,

Williamsburg, Virginia

Friday, October 21, EMCS 422, 2:00 pm.

M-matrices and (mostly) Their Inverses

Abstract. An $M-$matrix is a square matrix with nonpositive off-diagonal
entries and an entry-wise nonnegative inverse. An inverse M-matrix is then
any nonnegative matrix that arises as the inverse of an $M-$matrix. These
classes arise frequently in applications and have played an important role
in matrix theory. We discuss a few classical results and some recent
developments about such matrices, mostly about inverse $M-$matrices.

The talk should be accessible to students who have taken Linear Algebra.

This talk is supported by the Center of Excellence in Computer Applications.

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Our next speakers will be David Ashe, Department of Mathematics, UTC,
Thursday, October 27, 3:15.

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Boris P Belinskiy

Department of Mathematics, Dept. 6956

University of Tennessee at Chattanooga

Ph. (423) 425-4748