Chapter 1. Microlocal hypoellipticity in the seventies.- Chapter 2. A life in Mathematical Analysis: A conversation with Luigi Rodino.- Chapter 3. The zeros of nonlinearities and multiplicity of solutions for nonlinear elliptic problems.- Chapter 4. Nontrivial solutions to boundary value problems for semilinear ?a,ß a1,ß1-differential equations.- Chapter 5. Nonsmooth Pseudodifferential Operators on Smooth Manifolds.- Chapter 6. Multiplicity of Nonradial Solutions for Elliptic Problems via an Abstract Approach and Uniqueness of Nodal Radial Solutions.- Chapter 7. On the prehistory, history, and a convexity approach to prove Hardy-type inequalities.- Chapter 8. Heat Kernels and Riesz Transforms Related to Some Schrodinger Type operators.- Chapter 9. A note on Kato’s smoothing effect for a dispersive model arising in capillary-gravity flows.- Chapter 10. Metaplectic time-frequency representations.- Chapter 11. A review on critical nonlinearities for some evolution equations.- Chapter 12. Huygens’ Principle for the Klein-Gordon equation in FLRW spacetime with spatial hyperbolic sections.- Chapter 13. Theoretical analysis of a parabolic equation with nonlocal terms.- Chapter 14. Analysis of the exponential stability of some beam-string-beam transmission problems.- Chapter 15. Mathematical Modeling of Methamphetamine Market Dynamics: Insights into User-Gang-Cartel Interactions and Policy Implications.- Chapter 16. On quadrature formulas for a simple layer potential.- Chapter 17. A two-phase Stefan problem with power-type temperature-dependent thermal conductivity.- Chapter 18. Simultaneous optimal control problems for elliptic hemivariational inequalities.- Chapter 19. The directional short-time fractional Fourier transform of Schwartz test functions and distributions.- Chapter 20. New Solvability Conditions for Boundary Value Problems for Monogenic and Polymonogenic Functions on Fractal Domains.- Chapter 21. Fourier Analysis meets Quantum Groupoids. Towards a Noncommutative Harmonic Framework for Local Symmetries.- Chapter 22. Regularity of Nonlinear Parabolic Black–Scholes Equations via Boundedness of Generalized Exponentially Damped Bessel–Riesz Potentials in Variable Herz Spaces.- Chapter 23. Review: Boundedness of Multiplier Operators in the Walsh System.