Scholarship 21/01743-3 - Equações diferenciais parciais, Equações diferenciais parciais hiperbó - BV FAPESP
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Asymptotic profiles for evolution equations with time-dependent coefficients

Grant number: 21/01743-3
Support Opportunities:Scholarships in Brazil - Post-Doctoral
Start date: September 01, 2021
End date: December 31, 2024
Field of knowledge:Physical Sciences and Mathematics - Mathematics - Analysis
Principal Investigator:Marcelo Rempel Ebert
Grantee:Halit Sevki Aslan
Host Institution: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil
Associated scholarship(s):23/07827-0 - Lp-Lq decay estimates for solutions to the inviscid Boussinesq equation, BE.EP.PD

Abstract

In this project, we are interested in the asymptotic behavior (in time) of solutions for some linear and semi-linear hyperbolicequations or more in general, for evolution equations. The results are derived by developing a suitable Fourier Analysis in the phase space and by applying the well known stationary phase method. We plan to study both models with constant coefficients and with time-dependent coefficients as well. In the case of time-dependent coefficients, we will assume suitable regularity and a sufficient control of the oscillations as~$t\to\infty$. Also, we plan to apply the obtained linear estimates to prove global existence of small data solutions to associate semilinear problems with power nonlinearities. Also, in the subcritical case, to prove non-existence and blow-up results. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ASLAN, HALIT SEVKI; EBERT, MARCELO REMPEL; REISSIG, MICHAEL. SCALE-INVARIANT SEMILINEAR DAMPED WAVE MODELS WITH MASS TERM AND INTEGRABLE IN TIME SPEED OF PROPAGATION. DIFFERENTIAL AND INTEGRAL EQUATIONS, v. 36, n. 5-6, p. 38-pg., . (20/08276-9, 21/01743-3)