Group representations and matrix spectral problems∗

Ana Paula Santana, Jo[abar]o Filipe Queiró, Educardo Marques De Sá
1999 Linear and multilinear algebra  
We study a connection, via group representation theory, between the problem of describing the invariant factors of a product of two matrices over a principal ideal domain and the problem of describing the spectrum of a sum of two Hermitian matrices.
doi:10.1080/03081089908818603 fatcat:4ehda3t375gmzb43udbn2v42ma