A unitary invariant for pairs of self-adjoint operators.

• 1 July 1976
• journal article
• research article
• Published by Walter de Gruyter GmbH in Journal für die reine und angewandte Mathematik (Crelles Journal)
• Vol. 1976  (283-284) , 294-312
• https://doi.org/10.1515/crll.1976.283-284.294

Abstract