Vol. 77 No. 10 (2025)

Research articles

• Exact values of widths for the classes of functions defined by the averaged smoothness characteristics and majorants in the space $L_2$

  S. Vakarchuk, V. Zabutna, M. Vakarchuk

  599–628

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• Biorthogonal polynomials and their properties. Direct and inverse statements

  V. Makarov

  629–639

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• On the S-spectrum of Krasner hypermodules

  Yıldız Aydın, Burcu Nişancı Türkmen

  640–641

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• On the Brody hyperbolicity of the complex space $\mathbb C^3$ avoiding complex and real hyperplanes

  Abdessami Jalled

  642

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• Third order differential subordination associated with exponential function

  V. Agnes Sagaya Judy Lavanya, M. P. Jeyaraman, M. P. Rajakumar

  643

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• On hypercomplex numbers with third-order $k$-Jacobsthal numbers

  Gamaliel Morales

  644

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• Geometry of almost conformal Ricci solitons on K-contact manifolds

  Akhilesh Yadav, Tarun Saxena

  645–646

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• Correction to "Quaternionic Davis–Wielandt shell in a right quaternionic Hilbert space'', Ukrainian Mathematical Journal, vol. 75, No. 6, November, 2023 (Ukrainian original vol. 75, No. 6, June, 2023)

  Aref Jeribi, Kamel Mahfoudhi

  647–648

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