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R.O. Bilichenko

Observed names: Bilichenko R., O., Bilichenko, Roman, R. Bilichenko, R. O. Bilichenko, Roman Bilichenko, О., Біліченко Р.
ORCID: 0000-0001-5940-6716
Observed ORCID: 0000-0001-5940-6716
OpenAlex ID: A5063137391
Approximation of unbounded operators by bounded operators in a Hilbert space
2009 · V. F. Babenko, R. O. Bilichenko · Ukrainian Mathematical Journal · 6
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Inequality of Taikov type for powers of normal operators in Hilbert space
2021 · V.F. Babenko, R.O. Bilichenko · Researches in Mathematics · 2
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Understanding of the Main Ideas and Logical Reasoning When Studying the Sequence Limit Section
2022 · Daniil Doroshenko, Roman Bilichenko · SCIENTIFIC PRACTICE: MODERN AND CLASSICAL RESEARCH METHODS · 1
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The best approximation of classes, defined by powers of self-adjoint operators acting in Hilbert space, by other classes
2021 · V.F. Babenko, R.O. Bilichenko · Researches in Mathematics · 1
Some problems of approximation theory for powers of normal operators in Hilbert space
2021 · R.O. Bilichenko · Researches in Mathematics · 1
A Generalized Mathematical Framework Based on Measurable Spaces
2026 · Siasiev, Andrii, Bilichenko, Roman · Zenodo (CERN European Organization for Nuclear Research)
Tasks of Practical Content as a Means of Qualitative Mathematical Training of Education Seekers
2024 · Roman Bilichenko, Svitlana Konareva, et al. · Scientific bulletin of South Ukrainian National Pedagogical University named after K D Ushynsky
Application of spectral decomposition to establish inequalities for operators
2023 · R. Bilichenko, S. Zhir · Researches in Mathematics
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Mathematical Physics. the Schrödinger Equation for the Wave Function Ψ(x, T)
2023 · Daniil Doroshenko, Roman Bilichenko · ГРААЛЬ НАУКИ
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Local and Conditional Extremum of a Function of Two Variables
2023 · Daniil Doroshenko, Roman Bilichenko · GRUNDLAGEN DER MODERNEN WISSENSCHAFTLICHEN FORSCHUNG
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Аналіз основних помилок, яких припустилися здобувачі повної загальної середньої освіти на ЗНО з математики у 2021 році
2022 · О., Біліченко Р., В., Конарева С., et al. · eSSPU Institutional Repository
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Mathematics teacher's training under implementation of concept of the New Ukrainian school at the basic secondary education
2021 · Bilichenko R., O., Konareva S., V. · Zenodo (CERN European Organization for Nuclear Research)
Approximation of unbounded functional, defined by grades of normal operator, on the class of elements of Hilbert space
2016 · R.O. Bilichenko · Researches in Mathematics
Approximation of unbounded functionals by the bounded ones in Hilbert space
2012 · V.F. Babenko, R.O. Bilichenko · Researches in Mathematics
Refinement of a Hardy–Littlewood–Pólya-type inequality for powers of self-adjoint operators in a Hilbert space
2009 · V. F. Babenko, R. O. Bilichenko · Ukrainian Mathematical Journal
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Works count: 15
Citation count: 11
H-index: 2
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