Invariant and quasi-invariant measures on infinite-dimensional spaces
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Extensions of locally convex topological spaces are considered such that finite cylindrical measures which are not countably additive on their initial domains turn out to be countably additive on the extensions. Extensions of certain transformations of the initial spaces with respect to which the initial measures are invariant or quasi-invariant to the extensions of these spaces are described. Similar questions are considered for differentiable measures. The constructions may find applications in statistical mechanics and quantum field theory.
KeywordsHilbert Space DOKLADY Mathematic Gaussian Measure Canonical Embedding Infinite Dimensional Space
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