Unitary Equivalence to a Complex Symmetric Matrix: A Modulus Criterion

Stephan Ramon Garcia, Pomona College
Daniel E. Poore '11, Pomona College
Madeline K. Wyse '11, Pomona College


We develop a procedure for determining whether a square complex matrix is unitarily equivalent to a complex symmetric (i.e., self-transpose) matrix. We compare our approach to several existing methods [1, 19, 20] and present a number of examples.