SMS scnews item created by Daniel Hauer at Thu 6 May 2021 1134
Type: Seminar
Modified: Thu 6 May 2021 1143
Distribution: World
Expiry: 10 May 2021
Calendar1: 10 May 2021 1300-1400
CalLoc1: Zoom webinar
CalTitle1: Blow-up of solutions of critical elliptic equations in three dimensions

Blow-up of solutions of critical elliptic equations in three dimensions

Rupert Frank

Dear friends and colleagues,

on Monday, 10 May 2021 at 1 PM, Professor Rupert Frank (Caltech University, United States, and @ Ludwig Maximilian University of Munich, Germany) is giving a talk in our Asia-Pacific Analysis and PDE Seminar on

Blow-up of solutions of critical elliptic equations in three dimensions .

Abstract:

We describe the asymptotic behavior of positive solutions $$u_\varepsilon$$ of the equation $-\Delta u + au = 3\,u^{5-\varepsilon}\qquad \textrm{in $$\Omega\subseteq\,\mathbb{R}^3$$}$ with a homogeneous Dirichlet boundary condition. The function $$a$$ is assumed to be critical in the sense of Hebey and Vaugon and the functions $$u_\varepsilon$$ are assumed to be an optimizing sequence for the Sobolev inequality. Under a natural nondegeneracy assumption we derive the exact rate of the blow-up and the location of the concentration point, thereby proving a conjecture of Brézis and Peletier (1989). Similar results are also obtained for solutions of the equation $-\Delta u + (a+\varepsilon V) u = 3\,u^5\qquad\textrm{ in $$\Omega$$.}$ For the variational problem corresponding to the latter problem we also obtain precise energy asymptotics and a detailed description of the blow-up behavior of almost minimizers (but not necessarily minimizers or solutions).

More information and how to attend this talk can be found at the seminar webpage .

Best wishes,

Daniel

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Webinar Speaker

Rupert Frank
Professor @ Caltech University, United States, and @ Ludwig Maximilian University of Munich, Germany.

He defended his PhD thesis in 2007 @ the Royal Institute of Technology in Stockholm under the supervision of Ari Laptev. After a post-doctoral internship and assistant professorship @ Princeton, in 2013 he became professor @ Caltech and in 2016 at LMU Munich.

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