Abstract. Some recent papers formulated sufficient conditions for the decomposition of matrix variances [LZ-PD, PD-TG]. A statement was that if we have one or two observables, then the decomposition is possible. In this paper we consider an arbitrary finite set of observables and we present a necessary and sufficient condition for the decomposition of the matrix variances.
DOI: 10.14232/actasm-013-789-z
AMS Subject Classification
(1991): 81Q10
Keyword(s):
matrix
Received July 1, 2013, and in final form December 12, 2013. (Registered under 39/2013.)
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