28 citations · 55 across the 15 of their papers we have counts for
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math.FA2025
On stability of triangular factorization of positive operators
M. I. Belishev, A. F. Vakulenko
Let be a nest and a bounded positive operator in a Hilbert space . The representation provided $V\mathscr F_s\subset\m…
math.FA2019
The wave model of metric spaces
M. I. Belishev, S. A. Simonov
Let be a metric space, denote the metric neighborhood of the set of the radius ; be the lattice of open sets in with the partial order…
math.FA2012★ 1 cited
A unitary invariant of semi-bounded operator in reconstruction of manifolds
M. I. Belishev
With a densely defined symmetric semi-bounded operator of nonzero defect indexes in a separable Hilbert space we associate a topological space ({\it wave…