We are pleased to announce the top 10 highly viewed papers in 2023 and 2024 from the “Applied Mathematics” Section of Mathematics (ISSN: 2227-7390), carefully selected for their exceptional quality and relevance. These papers, which we welcome you to read, represent cutting-edge research in areas of applied mathematics.

1. “A Survey on Active Learning: State-of-the-Art, Practical Challenges and Research Directions”
by Alaa Tharwat and Wolfram Schenck
Mathematics 2023, 11(4), 820; https://doi.org/10.3390/math11040820
Full text available online: https://www.mdpi.com/2227-7390/11/4/820

2. “The General Fractional Integrals and Derivatives on a Finite Interval”
by Mohammed Al-Refai and Yuri Luchko
Mathematics 2023, 11(4), 1031; https://doi.org/10.3390/math11041031
Full text available online: https://www.mdpi.com/2227-7390/11/4/1031

3. “Improved Beluga Whale Optimization for Solving the Simulation Optimization Problems with Stochastic Constraints”
by Shih-Cheng Horng and Shieh-Shing Lin
Mathematics 2023, 11(8), 1854; https://doi.org/10.3390/math11081854
Full text available online:  https://www.mdpi.com/2227-7390/11/8/1854

4. “Reducing Uncertainty and Increasing Confidence in Unsupervised Learning”
by Nicholas Christakis and Dimitris Drikakis
Mathematics 2023, 11(14), 3063; https://doi.org/10.3390/math11143063
Full text available online:  https://www.mdpi.com/2227-7390/11/14/3063

5. “Chaos Meets Cryptography: Developing an S-Box Design with the Rössler Attractor”
by Erendira Corona-Bermúdez, Juan Carlos Chimal-Eguía, Uriel Corona-Bermúdez and Mario Eduardo Rivero-Ángeles
Mathematics 2023, 11(22), 4575; https://doi.org/10.3390/math11224575
Full text available online:  https://www.mdpi.com/2227-7390/11/22/4575

6. “Approximation of Bivariate Functions by Generalized Wendland Radial Basis Functions”
by Abdelouahed Kouibia, Pedro González, Miguel Pasadas, Bassim Mustafa, Hossain Oulad Yakhlef and Loubna Omri
Mathematics 2024, 12(16), 2597; https://doi.org/10.3390/math12162597
Full text available online:  https://www.mdpi.com/2227-7390/12/16/2597

7. “Numerical Reconstruction of Time-Dependent Boundary Conditions to 2D Heat Equation on Disjoint Rectangles at Integral Observations”
by Miglena N. Koleva and Lubin G. Vulkov
Mathematics 2024, 12(10), 1499; https://doi.org/10.3390/math12101499
Full text available online: https://www.mdpi.com/2227-7390/12/10/1499

8. “Surrogate-Based Physics-Informed Neural Networks for Elliptic Partial Differential Equations”
by Peng Zhi, Yuching Wu, Cheng Qi, Tao Zhu, Xiao Wu and Hongyu Wu
Mathematics 2023, 11(12), 2723; https://doi.org/10.3390/math11122723
Full text available online: https://www.mdpi.com/2227-7390/11/12/2723

9. “Highly Accurate and Efficient Time Integration Methods with Unconditional Stability and Flexible Numerical Dissipation”
by Yi Ji and Yufeng Xing
Mathematics 2023, 11(3), 593; https://doi.org/10.3390/math11030593
Full text available online: https://www.mdpi.com/2227-7390/11/3/593

10. “Going Next after “A Guide to Special Functions in Fractional Calculus”: A Discussion Survey”
by Virginia Kiryakova and Jordanka Paneva-Konovska
Mathematics 2024, 12(2), 319; https://doi.org/10.3390/math12020319
Full text available online: https://www.mdpi.com/2227-7390/12/2/319