JIPAM

Multiplicative Principal-Minor Inequalities for A Class of Oscillatory Matrices  
 
  Authors: Xiao Ping Liu, Shaun M. Fallat,  
  Keywords: Totally positive matrices; Determinant; Principal minor; Bidiagonal factorization, Determinantal inequalities; Generators.  
  Date Received: 29/11/06  
  Date Accepted: 22/06/08  
  Subject Codes:

15A15, 15A48.

 
  Editors: Alexander M. Rubinov (1940-2006), Chi-Kwong Li,  
 
  Abstract:

A square matrix is said to be totally nonnegative (respectively, positive) if all of its minors are nonnegative (respectively, positive). Determinantal inequalities have been a popular and important subject, especially for positivity classes of matrices such as: positive semidefinite matrices, M matrices, and totally nonnegative matrices. Our main interest lies in characterizing all of the inequalities that exist among products of both principal and non-principal minors of certain subclasses of invertible totally nonnegative matrices. This description is accomplished by providing a complete list of associated multiplicative generators.;



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