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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Regularity estimates for fully nonlinear elliptic PDEs with general Hamiltonian terms and unbounded ingredients

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Author(s):
da Silva, Joao Vitor [1] ; Nornberg, Gabrielle [2]
Total Authors: 2
Affiliation:
[1] Univ Estadual Campinas, IMECC, Dept Matemat, Campinas - Brazil
[2] Univ Sao Paulo, Inst Ciencias Matemat & Comp, Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: CALCULUS OF VARIATIONS AND PARTIAL DIFFERENTIAL EQUATIONS; v. 60, n. 6 DEC 2021.
Web of Science Citations: 0
Abstract

We develop an optimal regularity theory for L-p-viscosity solutions of fully nonlinear uniformly elliptic equations in nondivergence form whose gradient growth is described through a Hamiltonian function with measurable and possibly unbounded coefficients. Our approach treats both superlinear and sublinear gradient regimes in a unified way. We show C-0,C-alpha, C-0,C-Log-Lip, C-1,C-alpha, C-1,C-Log-Lip and C-2,C-alpha regularity estimates, by displaying the growth allowed to the Hamiltonian in order to deal with an unbounded nonlinear gradient coefficient, whose integrability in turn gets worse as we approach the quadratic regime. These results may be seen as natural extensions of Teixeira (Arch Ration Mech Anal 211(3):911-927, 2014) and Nornberg (J Math Pures Appl 128(9):297-329, 2019). Moreover, we find proper compatibility conditions for which our regularity results depend intrinsically on the integrability of the underlying source term. As a byproduct of our methods, we prove a priori BMO estimates; sharp regularity to associated recession and flat profiles under relaxed convexity assumptions; improved regularity for a class of singular PDEs; and a Perron type result under unbounded ingredients. (AU)

FAPESP's process: 18/04000-9 - EXISTENCE AND MULTIPLICITY OF SOLUTIONS FOR ELLIPTIC PROBLEMS WITH QUADRATIC GROWTH IN THE GRADIENT
Grantee:Gabrielle Saller Nornberg
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 19/03101-9 - Symmetry and existence of solutions for nonlinear elliptic problems
Grantee:Gabrielle Saller Nornberg
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor