Well-posedness and qualitative properties for nonlinear PDEs

• Grant number: 20/05618-6
• Support Opportunities: Regular Research Grants
• Start date: September 01, 2020
• End date: August 31, 2022
• Field of knowledge: Physical Sciences and Mathematics - Mathematics - Analysis
• Principal Investigator: Lucas Catão de Freitas Ferreira
• Grantee: Lucas Catão de Freitas Ferreira
• Host Institution: Instituto de Matemática, Estatística e Computação Científica (IMECC). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• City of the host institution: Campinas

Abstract

In this project we will address well-posedness and qualitative properties of nonlinear Partial Differential Equations (PDEs) distributed in the following groups: elliptic equations and systems; fluid dynamics equations; and hyperbolic and dispersive equations. We will analyze how initial and boundary conditions, properties of domains, nonlinearities, potentials and forcing terms, presenting certain types of symmetries, anisotropies and singularities, influence the behavior of solutions. We will investigate issues such as existence, uniqueness, continuous dependence on parameters and data, symmetries, singularities, self-similarity, decay, stability, and asymptotic behavior. The general approach in the project is to analyze the equations in functional spaces that allow data, coefficients and solutions with the desired properties, such as spaces of Radon measures, $L^{\infty}$ with homogeneous weight (and sum of translations of those), Morrey spaces, Besov, modulation spaces, Fourier-Besov, Herz-type spaces, weak-Herz, Besov-Herz, Besov-Morrey, Fourier-Besov-Morrey, among others. The handling of the integral operators linked to the notion of solution requires interpolation techniques, product, convolution and commutator operator estimates, characterizations of preduals and block spaces, estimates for volume-preserving diffeomorphisms, among other ingredients of harmonic analysis. (AU)

Scientific publications

(5)

(The scientific publications listed on this page originate from the Web of Science or SciELO databases. Their authors have cited FAPESP grant or fellowship project numbers awarded to Principal Investigators or Fellowship Recipients, whether or not they are among the authors. This information is collected automatically and retrieved directly from those bibliometric databases.)

CUBA, EDISON; FERREIRA, LUCAS C. F.. EXISTENCE OF ASYMMETRIC VORTEX PATCH FOR THE GENERALIZED SQG EQUATIONS. SIAM JOURNAL ON MATHEMATICAL ANALYSIS, v. 57, n. 1, p. 35-pg., 2025-01-01. (20/05618-6, 21/10769-6)

FERREIRA, LUCAS C. F.; MACHADO, DANIEL F.. On the well-posedness in Besov-Herz spaces for the inhomogeneous incompressible Euler equations. DYNAMICS OF PARTIAL DIFFERENTIAL EQUATIONS, v. 21, n. 1, p. 29-pg., 2024-01-01. (20/05618-6)

ANGULO-CASTILLO, V.; FERREIRA, L. C. F.; KOSLOFF, L.. Long-time solvability for the 2D inviscid Boussinesq equations with borderline regularity and dispersive effects. ASYMPTOTIC ANALYSIS, v. 137, n. 1-2, p. 32-pg., 2024-01-01. (20/05618-6, 16/15985-0)

FERREIRA, LUCAS C. F.; LAGOIN, WENDER S.. An approach to elliptic equations with nonlinear gradient terms via a modulation framework. BULLETIN OF MATHEMATICAL SCIENCES, v. N/A, p. 41-pg., 2023-02-24. (20/05618-6)

FERREIRA, LUCAS C. F.; LAGOIN, WENDER S.. On a localization-in-frequency approach for a class of elliptic problems with singular boundary data. PROCEEDINGS OF THE ROYAL SOCIETY OF EDINBURGH SECTION A-MATHEMATICS, v. N/A, p. 35-pg., 2024-05-21. (20/05618-6)