LINEAR ALGEBRA AND ITS APPLICATIONS
Contents Volume 201

Robert Grone (San Diego, California)
A Biography of Marvin Marcus 1

Chi-Kwong Li (Williamsburg, Virginia)
Linear Operators Preserving the (p, q) Numerical Radius 21

William Watkins (Northridge, California)
Unimodular Congruence of the Laplacian Matrix of a Graph 43

Morris Newman (Santa Barbara, California)
Tridiagonal Matrices 51

Russell Merris (Hayward, California)
A Note on Unimodular Congruence of Graphs 57

Raphael Loewy (Haifa, Israel) and
Stephen Pierce (San Diego, California)
Linear Preservers of Balanced Singular Inertia Classes 61

E. R. Barnes (Atlanta, Georgia) and A. J. Hoffman
(Yorktown Heights, New York)
Bounds for the Spectrum of Normal Matrices 79

Alexander Kovacec (Coimbra, Portugal)
On a Conjecture of Marcus and de Oliveira 91

N. Bebiano and M. E. Miranda (Coimbra, Portugal)
On a Recent Determinantal Inequality 99

Richard A. Brualdi (Madison, Wisconsin) and
Bryan L. Shader (Laramie, Wyoming)
Minimum Permanents on Special Faces of the Polytope of Doubly
Stochastic Matrices 103

Mao-Ting Chien (Taipei, Taiwan) and Bit-Shun Tam (Tamsui, Taiwan)
Circularity of the Numerical Range 113

Henryk Minc (Santa Barbara, California)
Minimum Permanents of Doubly Stochastic Matrices With Prescribed
Zero Entries on the Main Diagonal 135

Richard Arens (Los Angeles, California) and
Moshe Goldberg (Haifa, Israel)
Weighted I*be Norms for Matrices 155

Morris Newman and Robert C. Thompson (Santa Barbara, California)
A Counterexample Connected With Gersgorin's Theorem 165

LeRoy B. Beasley (Logan, Utah) and Daniel J. Scully
(St. Cloud, Minnesota)
Linear Operators Which Preserve Combinatorial Orthogonality 171

Robert Grone, Stephen Pierce, James Ross (San Diego, California),
and Chi-Kwong Li (Williamsburg, Virginia)
Spectral Bounds Derived From Quadratic Forms on Decomposable
Tensors 181

Frank Uhlig (Auburn, Alabama)
Computing the Inertias in Symmetric Matrix Pencils 199

George W. Soules (Princeton, New Jersey)
An Approach to the Permanental-Dominance Conjecture 211

Author Index 231