2 citations · 2 across the 4 of their papers we have counts for
4 papers
Scattered compact sets in continuous images of Čech-complete spaces
Taras Banakh, Bogdan Bokalo, Vladimir Tkachuk
Assume hat a functionally Hausdorff space is a continuous image of a Čech complete space with Lindelöf number . Then the following conditions are equivale…
X-ray Emission of ICRF Sources
V. V. Voitsekhovskiy, A. V. Tugay, V. V. Tkachuk +1
Considering increasing requirements to the coordinates measurement precision by the end of XX century International Astronomical Union commenced implementation of the new astrometr…
Weakly linearly Lindelöf monotonically normal spaces are Lindelöf
I. Juhász, V. V. Tkachuk, R. G. Wilson
We call a space {\it weakly linearly Lindelöf} if for any family of non-empty open subsets of of regular uncountable cardinality , there exists a point $x\…
Regular -diagonals and some upper bounds for cardinality of topological spaces
Ivan S. Gotchev, Mikhail G. Tkachenko, Vladimir V. Tkachuk
We prove that, under CH, any space with a regular -diagonal and caliber is separable; a corollary of this result answers, under CH, a question of Buzyakova. For any Urys…