Creutzig, Thomas; Kovalchuk, Vladimir; Linshaw, Andrew R. Building blocks for \(W\)-algebras of classical types. arXiv:2409.03465 Preprint, arXiv:2409.03465 [math.RT] (2024). BibTeX Cite \textit{T. Creutzig} et al., ``Building blocks for $W$-algebras of classical types'', Preprint, arXiv:2409.03465 [math.RT] (2024) Full Text: arXiv OA License
Stanzhytskyi, O. M.; Kichmarenko, O. D.; Mogylova, V. V.; Koval’chuk, T. V. Optimal control over systems of functional-differential equations with infinite delay. (English. Ukrainian original) Zbl 1528.49019 Ukr. Math. J. 75, No. 1, 157-173 (2023); translation from Ukr. Mat. Zh. 75, No. 1, 138-152 (2023). Reviewer: Suvra Kanti Chakraborty (Kolkata) MSC: 49K15 34K35 93C15 PDFBibTeX XMLCite \textit{O. M. Stanzhytskyi} et al., Ukr. Math. J. 75, No. 1, 157--173 (2023; Zbl 1528.49019); translation from Ukr. Mat. Zh. 75, No. 1, 138--152 (2023) Full Text: DOI
Koval’chuk, M.; Kharchenko, V.; Yavors’kyĭ, A.; Bieda, I.; Panchenko, T. ECG signal classification using machine learning techniques. (Ukrainian. English summary) Zbl 1513.92037 Visn., Ser. Fiz.-Mat. Nauky, Kyïv. Univ. Im. Tarasa Shevchenka 2022, No. 2, 70-77 (2022). MSC: 92C55 68T07 PDFBibTeX XMLCite \textit{M. Koval'chuk} et al., Visn., Ser. Fiz.-Mat. Nauky, Kyïv. Univ. Im. Tarasa Shevchenka 2022, No. 2, 70--77 (2022; Zbl 1513.92037) Full Text: DOI OA License
Creutzig, Thomas; Kovalchuk, Vladimir; Linshaw, Andrew R. Generalized parafermions of orthogonal type. (English) Zbl 1495.17039 J. Algebra 593, 178-192 (2022). MSC: 17B69 PDFBibTeX XMLCite \textit{T. Creutzig} et al., J. Algebra 593, 178--192 (2022; Zbl 1495.17039) Full Text: DOI arXiv
Koval’chuk, T. V.; Lavrova, O. E.; Mohyl’ova, V. V. Optimal control for some classes of dynamic equations on the infinite interval of time scale. (English. Ukrainian original) Zbl 1465.37108 J. Math. Sci., New York 254, No. 2, 229-245 (2021); translation from Neliniĭni Kolyvannya 22, No. 4, 482-496 (2019). MSC: 37N35 PDFBibTeX XMLCite \textit{T. V. Koval'chuk} et al., J. Math. Sci., New York 254, No. 2, 229--245 (2021; Zbl 1465.37108); translation from Neliniĭni Kolyvannya 22, No. 4, 482--496 (2019) Full Text: DOI
Koval’chuk, T. V.; Mogylova, V. V.; Stanzhytskyi, O. M.; Shovkoplyas, T. V. Application of the averaging method to the problems of optimal control of the impulse systems. (English) Zbl 1468.49036 Carpathian Math. Publ. 12, No. 2, 504-521 (2020). Reviewer: Hector Jasso (Ciudad de México) MSC: 49N25 PDFBibTeX XMLCite \textit{T. V. Koval'chuk} et al., Carpathian Math. Publ. 12, No. 2, 504--521 (2020; Zbl 1468.49036) Full Text: DOI OA License
Koval’chuk, T. V.; Mohyl’ova, V. V.; Shovkoplyas, T. V. Averaging method in problems of optimal control over impulsive systems. (English. Ukrainian original) Zbl 1460.49024 J. Math. Sci., New York 247, No. 2, 314-327 (2020); translation from Neliniĭni Kolyvannya 22, No. 1, 86-97 (2019). Reviewer: Roman Šimon Hilscher (Brno) MSC: 49N25 49K15 34H05 PDFBibTeX XMLCite \textit{T. V. Koval'chuk} et al., J. Math. Sci., New York 247, No. 2, 314--327 (2020; Zbl 1460.49024); translation from Neliniĭni Kolyvannya 22, No. 1, 86--97 (2019) Full Text: DOI
Aleroev, Temirkhan S.; Aleroeva, Hedi T.; Kovalchuk, Oleg A.; Tang, Yifa On the main oscillational properties of fractional differential equations. (English) Zbl 1442.34006 Georgian Math. J. 27, No. 2, 177-182 (2020). MSC: 34A08 34C10 PDFBibTeX XMLCite \textit{T. S. Aleroev} et al., Georgian Math. J. 27, No. 2, 177--182 (2020; Zbl 1442.34006) Full Text: DOI
Klir, D.; Shishlov, A. V.; Kokshenev, V. A.; Kubes, P.; Rezac, K.; Cherdizov, R. K.; Cikhardt, J.; Cikhardtova, B.; Dudkin, G. N.; Fursov, F. I.; Hyhlik, T.; Kaufman, J.; Kovalchuk, B. M.; Krasa, J.; Kravarik, J.; Kurmaev, N. E.; Labetsky, A. Yu; Munzar, V.; Orcikova, H.; Padalko, V. N.; Ratakhin, N. A.; Sila, O.; Stodulka, J.; Turek, K.; Varlachev, V. A.; Wagner, R. Ion acceleration mechanism in mega-ampere gas-puff z-pinches. (English) Zbl 07859552 New J. Phys. 20, No. 5, Article ID 053064, 14 p. (2018). MSC: 81-XX 82-XX 83-XX PDFBibTeX XMLCite \textit{D. Klir} et al., New J. Phys. 20, No. 5, Article ID 053064, 14 p. (2018; Zbl 07859552) Full Text: DOI
Kravets’, V. I.; Koval’chuk, T. V.; Mohyl’ova, V. V.; Stanzhyts’kyi, O. M. Application of the method of averaging to the problems of optimal control over functional-differential equations. (English. Ukrainian original) Zbl 1425.49009 Ukr. Math. J. 70, No. 2, 232-242 (2018); translation from Ukr. Mat. Zh. 70, No. 2, 206-215 (2018). MSC: 49K15 34K33 PDFBibTeX XMLCite \textit{V. I. Kravets'} et al., Ukr. Math. J. 70, No. 2, 232--242 (2018; Zbl 1425.49009); translation from Ukr. Mat. Zh. 70, No. 2, 206--215 (2018) Full Text: DOI
Ivashkevych, A. O.; Koval’chuk, T. V. Existence of an optimal control for systems of differential equations with pulse action at nonfixed times. (English. Ukrainian original) Zbl 1396.49014 J. Math. Sci., New York 228, No. 3, 245-262 (2018); translation from Neliniĭni Kolyvannya 19, No. 4, 493-508 (2016). Reviewer: Michał Jóźwikowski (Warszawa) MSC: 49K15 49N05 49J15 PDFBibTeX XMLCite \textit{A. O. Ivashkevych} and \textit{T. V. Koval'chuk}, J. Math. Sci., New York 228, No. 3, 245--262 (2018; Zbl 1396.49014); translation from Neliniĭni Kolyvannya 19, No. 4, 493--508 (2016) Full Text: DOI
Kovalchuk, L. V.; Bezditnyi, V. T. Upper bounds for the average probabilities of difference characteristics of block ciphers with alternation of Markov transformations and generalized Markov transformations. (English. Russian original) Zbl 1342.94076 Cybern. Syst. Anal. 50, No. 3, 386-393 (2014); translation from Kibern. Sist. Anal. No. 3, 71-78 (2014). MSC: 94A60 PDFBibTeX XMLCite \textit{L. V. Kovalchuk} and \textit{V. T. Bezditnyi}, Cybern. Syst. Anal. 50, No. 3, 386--393 (2014; Zbl 1342.94076); translation from Kibern. Sist. Anal. No. 3, 71--78 (2014) Full Text: DOI
Aldoshin, S. M.; Anosov, D. V.; Chernyi, G. G.; Chubarikov, V. N.; Emel’yanov, S. V.; Faddeev, L. D.; Fomenko, A. T.; Gonchar, A. A.; Grigor’ev, A. I.; Il’in, V. A.; Kirpichnikov, M. P.; Korovin, S. K.; Koval’chuk, M. V.; Kozlov, V. V.; Kurzhanskii, A. B.; Marchuk, G. I.; Maslov, V. P.; Moiseev, E. I.; Nikol’skii, S. M.; Novikov, S. P.; Okunev, Yu. M.; Osipov, Yu. S.; Paton, B. E.; Skulachev, V. P.; Tkachuk, V. A.; Velikhov, E. P.; Zhuravlev, Yu. I. Viktor Antonovich Sadovnichii. A tribute in honor of his seventieth birthday. (English. Russian original) Zbl 1171.01307 Differ. Equ. 45, No. 4, 465-476 (2009); translation from Differ. Uravn. 45, No. 4, 451-461 (2009). MSC: 01A70 PDFBibTeX XMLCite \textit{S. M. Aldoshin} et al., Differ. Equ. 45, No. 4, 465--476 (2009; Zbl 1171.01307); translation from Differ. Uravn. 45, No. 4, 451--461 (2009) Full Text: DOI
Koval’chuk, T. V. Asymptotic properties of the estimates of parameters of a correlation function of random fields. (Ukrainian. English summary) Zbl 0970.62064 Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2000, No. 6, 15-17 (2000). Reviewer: M.P.Moklyachuk (Kyïv) MSC: 62M40 62G05 60G60 PDFBibTeX XMLCite \textit{T. V. Koval'chuk}, Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2000, No. 6, 15--17 (2000; Zbl 0970.62064)
Glushchenko, A. A.; Koval’chuk, T. L. Solution of a filtering problem with partially unknown boundary conditions. (Ukrainian) Zbl 1029.35501 Visn., Ser. Fiz.-Mat. Nauky, Kyïv. Univ. Im. Tarasa Shevchenka 1996, No. 1, 21-28 (1996). Reviewer: O.A.Voina (Kyïv) MSC: 35G20 35G30 30C30 35J25 35Q80 PDFBibTeX XMLCite \textit{A. A. Glushchenko} and \textit{T. L. Koval'chuk}, Visn., Ser. Fiz.-Mat. Nauky, Kyïv. Univ. Im. Tarasa Shevchenka 1996, No. 1, 21--28 (1996; Zbl 1029.35501)
Kubenko, V. D.; Koval’chuk, P. S.; Boyarshina, L. G.; Krasnopol’skaya, T. S.; Podchasov, N. P.; Puchka, G. N.; Kholopova, V. V.; Shvets, A. Yu. Nonlinear dynamics of axially symmetric fluid-carrying bodies. (Nelinejnaya dinamika osesimmetrichnykh tel, nesushchikh zhidkost’.) (Russian) Zbl 0861.73004 Kiev: Naukova Dumka. 184 p. (1992). MSC: 74-02 74F10 76B99 PDFBibTeX XMLCite \textit{V. D. Kubenko} et al., Nelinejnaya dinamika osesimmetrichnykh tel, nesushchikh zhidkost' (Russian). Kiev: Naukova Dumka (1992; Zbl 0861.73004)
Koval’chuk, T. V. On the convergence of distributions of functionals of an estimate for the correlation function of a stationary process in the presence of a trend. (Ukrainian) Zbl 0900.62484 Vīsn. Kiïv. Unīv., Mat. Mekh. 30, 35-44 (1988). MSC: 62M10 62E20 PDFBibTeX XMLCite \textit{T. V. Koval'chuk}, Visn. Kyïv. Univ., Mat. Mekh. 30, 35--44 (1988; Zbl 0900.62484)
Koval’chuk, T. V. On convergence of the distributions of functionals of the correlogram of a homogeneous random field with unknown mean. (English. Russian original) Zbl 0634.62094 Theory Probab. Math. Stat. 35, 45-53 (1987); translation from Teor. Veroyatn. Mat. Stat. 35, 44-51 (1986). Reviewer: M.Yadrenko MSC: 62M99 62F12 60G60 60F17 62M09 62E20 PDFBibTeX XMLCite \textit{T. V. Koval'chuk}, Theory Probab. Math. Stat. 35, 45--53 (1986; Zbl 0634.62094); translation from Teor. Veroyatn. Mat. Stat. 35, 44--51 (1986)
Kubenko, V. D.; Koval’chuk, P. S.; Krasnopol’skaya, T. S. Nonlinear interaction of forms of flexural vibrations of cylindrical shells (Nelinejnoe vzaimodejstvie form izgibnykh kolebanij tsilindricheskikh obolochek). (Russian) Zbl 0574.73079 Kiev: Naukova Dumka. 220 p. R. 2.50 (1984). Reviewer: A.Hanuška MSC: 74K15 74K25 74H45 74H99 74-02 74F10 PDFBibTeX XML
Kubenko, V. D.; Koval’chuk, P. S.; Krasnopol’skaya, T. S. Effect of initial camber on natural nonlinear vibrations of cylindrical shells. (English. Russian original) Zbl 0539.73075 Sov. Appl. Mech. 18, 34-39 (1982); translation from Prikl. Mekh. 18, No. 1, 43-49 (1982). MSC: 74H45 74K15 74K25 PDFBibTeX XMLCite \textit{V. D. Kubenko} et al., Sov. Appl. Mech. 18, 34--39 (1982; Zbl 0539.73075); translation from Prikl. Mekh. 18, No. 1, 43--49 (1982) Full Text: DOI
Koval’chuk, P. S.; Krasnopol’skaya, T. S.; Podchasov, N. P. Dynamic instability of circular cylindrical shells with initial camber. (English. Russian original) Zbl 0501.73040 Sov. Appl. Mech. 18, 208-212 (1982); translation from Prikl. Mekh. 18, No. 3, 28-33 (1982). MSC: 74H55 74K15 74K25 74H45 PDFBibTeX XMLCite \textit{P. S. Koval'chuk} et al., Sov. Appl. Mech. 18, 208--212 (1982; Zbl 0501.73040); translation from Prikl. Mekh. 18, No. 3, 28--33 (1982) Full Text: DOI
Koval’chuk, P. S.; Krasnopol’skaya, T. S. Resonance phenomena in nonlinear vibrations of cylindrical shells with initial imperfections. (English. Russian original) Zbl 0445.73084 Sov. Appl. Mech. 15, 867-872 (1980); translation from Prikl. Mekh. 15, No. 9, 100-107 (1979). MSC: 74K25 74H45 74K15 PDFBibTeX XMLCite \textit{P. S. Koval'chuk} and \textit{T. S. Krasnopol'skaya}, Sov. Appl. Mech. 15, 867--872 (1979; Zbl 0445.73084); translation from Prikl. Mekh. 15, No. 9, 100--107 (1979) Full Text: DOI