ACTA MATHEMATICA UNIVERSITATIS COMENIANAE

Vol. 67,   2   (1998)
pp.   217-230

ORTHOGONAL DECOMPOSITIONS IN HILBERT C-MODULES AND STATIONARY PROCESSES
D. POPOVICI


Abstract.  It is obtained a Wold-type decomposition for an adjointable isometry on a Hilbert $ C$-module which is sequentially complete with respect to some locally convex topology, denoted by $s$. Particularly self-dual Hilbert $ C$-modules satisfy this condition. Finally, as an application we shall give a new proof of the Wold decomposition theorem for discrete stationary processes in complete correlated actions.

AMS subject classification.  46L10; Secondary 60G15
Keywords.  Hilbert $ C$-modules, Wold decomposition, stationary processes in complete correlated actions

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