Svetlin G. Georgiev has worked in various areas of mathematics. He currently focuses on harmonic analysis, functional analysis, partial differential equations, ordinary differential equations, Clifford and Quaternion analysis, integral equations, dynamic calculus on time scales. He has authored several books for CRC press, including: Boundary Value Problems on Time Scales Volume I, (2021); Boundary Value Problems on Time Scales Volume II, (2021); Multiple Fixed Point Theorems and Applications in the Theory of ODEs, FDEs and PDEs, (2022); Multiplicative Differential Calculus, (2022); Multiplicative Analytic Geometry, (2022); Multiplicative Differential Equations- Volume I, (2023); Multiplicative Differential Equations- Volume II, (2023); Multiplicative Partial Differential Equations, (2023); General Quantum Numerical Analysis, (2024); General Quantum Variational Calculus, (2024); Fuzzy Impulsive Dynamic Equations on Time Scales, (2025). Khaled Zennir is a professor at Qassim University, Saudi Arabia. His research interests lie in nonlinear partial differential equations, stochastic dynamic equations, fractional derivatives. He has published more than twelve books with CRC Press, including: Boundary Value Problems on Time Scales Volume I, (2021); Boundary Value Problems on Time Scales Volume II, (2021); Multiple Fixed Point Theorems and Applications in the Theory of ODEs, FDEs and PDEs, (2022); Multiplicative Differential Calculus, (2022); Multiplicative Analytic Geometry, (2022); Multiplicative Differential Equations- Volume I, (2023); Multiplicative Differential Equations- Volume II, (2023); Multiplicative Partial Differential Equations, (2023); General Quantum Numerical Analysis, (2024); General Quantum Variational Calculus, (2024); Fuzzy Impulsive Dynamic Equations on Time Scales, (2025).