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20072026
most citedRegularity of sets with quasiminimal boundary surfaces in metric spaces

46 citations · 162 across the 32 of their papers we have counts for

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math.AP2026

Parabolic Poincaré inequalities and maximal function estimates for systems of partial differential equations

Wontae Kim, Juha Kinnunen

We study parabolic Poincaré inequalities for solutions to nonlinear systems of partial differential equations. Our main results show that these inequalities are self-improving. As…

math.AP2023

Gradient higher integrability for double phase problems on metric measure spaces

Juha Kinnunen, Antonella Nastasi, Cintia Pacchiano Camacho

We study local and global higher integrability properties for quasiminimizers of a class of double-phase integrals characterized by nonstandard growth conditions. We work purely on…

math.AP2023

Lipschitz truncation method for parabolic double-phase systems and applications

Wontae Kim, Juha Kinnunen, Lauri Särkiö

We discuss a Lipschitz truncation technique for parabolic double-phase problems of -Laplace type in order to prove energy estimates and uniqueness results for the Dirichlet prob…

math.AP2023

On the regularity theory for mixed anisotropic and nonlocal -Laplace equations and its applications to singular problems

Prashanta Garain, Wontae Kim, Juha Kinnunen

We establish existence results for a class of mixed anisotropic and nonlocal -Laplace equation with singular nonlinearities. We consider both constant and variable singular expo…

math.AP2022

Parabolic Muckenhoupt Weights on Spaces of Homogeneous Type

Juha Kinnunen, Kim Myyryläinen, Dachun Yang +1

This work discusses parabolic Muckenhoupt weights on spaces of homogeneous type, i.e.\ quasi-metric spaces with both a doubling measure and an additional monotone geodesic property…

math.AP2022

Gradient higher integrability for degenerate parabolic double-phase systems

Wontae Kim, Juha Kinnunen, Kristian Moring

We prove local higher integrability of the gradient of a weak solution to a degenerate parabolic double-phase system. This result comes with a reverse Hölder type estimate for the…