Search Results - "Tkachenko, M.G."

Topological groups of Lipschitz functions and Graev metrics by Chasco, M.J., Domínguez, X., Tkachenko, M.G.

“…We study the properties of the free abelian topological group Ad(X) on a metric space (X,d) endowed with the topology generated by the Graev extension dˆ of a…”
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The weight and Lindelöf property in spaces and topological groups by Tkachenko, M.G.

“…We show that if Y is a dense subspace of a Tychonoff space X, then w(X)≤nw(Y)Nag(Y), where Nag(Y) is the Nagami number of Y. In particular, if Y is a Lindelöf…”
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SELF-TRANSVERSAL SPACES AND THEIR DISCRETE SUBSPACES by JUHÁSZ, I., TKACHENKO, M.G., TKACHUK, V.V., WILSON, R.G.

“…A space X is called self-transversal if there is a bijection φ : X → X such that the family τ(X) U φ(τ(X)) forms a subbase of the discrete topology on X. We…”
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Continuity Properties of Discontinuous Homomorphisms and Refinements of Group Topologies by Bello, H.J., Rodríguez, L., Tkachenko, M.G.

“…We present several conditions on topological groupsGandHunder whicheverydiscontinuous homomorphism ofGtoHpreserves accumulation points of open sets inG. It is…”
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Comparative Analysis of Phenomenological Approximations for the Light Curves of Eclipsing Binary Stars with Additional Parameters by Andronov, I. L., Tkachenko, M. G., Chinarova, L. L.

“…A comparative analysis is made of special profiles of eclipses used for phenomenological modelling of the light curves of eclipsing binary stars. Families of…”
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Strong realcompactness and strong Dieudonné completeness in topological groups by Tkachenko, M.G., Hernández-García, C., López Ramírez, M.A.

“…We show that a topological group G is topologically isomorphic to a closed subgroup of a topological product of metrizable groups if and only if G is…”
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Dyadicity index and metrizability of compact continuous images of function spaces by Tkachenko, M.G., Tkachuk, V.V.

“…We show that the dyadicity index can be increased by taking the square even in the class of second countable spaces. Besides, any compact group contains a…”
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