Idempotents and Krein spaceLet B(H)Id be the set of all bounded idempotents on a Hilbert
space H. Fix p ∈ B(H)Id. The aim
Idempotents as J-ProjectionsLet B(H)Id be the set of all bounded idempotents on a Hilbert
space H. Fix p∈B(H)Id. The aim
Positive projections as generators of J-projections of type (B)Let A be a von Neumann J-algebra of type (B) acting in an indefinite metric
space. The aim
Main metric invariants of finite metric spaces metric
spaces. These invariants can be used for classification of finite metric
spaces Properties of two selections in metric spaces of nonpositive curvatureIn this article the author proves local Lipschitz properties of two selections for the
space Main metric invariants of finite metric spaces. II metric
spaces. These invariants can be used for classification of the finite metric
spaces Vector measures on the logic of J-projections of a krein spaceLet ℋ be a Hilbert
space with an inner product (.,.)ℋ. In Jajte, R., and Paszkiewicz, A. (1978
Space in a world view of poetic phraseology of the Tatar language orientation, an arrangement of objects in
space, etc. Includes brief characteristics to terms given: the world