Vol. 305, No. 2, 2020

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Singular periodic solutions to a critical equation in the Heisenberg group

Claudio Afeltra

Vol. 305 (2020), No. 2, 385–406
DOI: 10.2140/pjm.2020.305.385
Abstract

We construct positive solutions to the equation

Δnu = uQ+2 Q2

on the Heisenberg group, singular in the origin, similar to the Fowler solutions of the Yamabe equations on n. These satisfy the homogeneity property u δT = T(Q2)2u for some T large enough, where Q = 2n + 2 and δT is the natural dilation in n. We use the Lyapunov–Schmidt method applied to a family of approximate solutions built by periodization from the global regular solution classified by Jerison and Lee (1988).

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Keywords
subelliptic equations, perturbation methods
Mathematical Subject Classification 2010
Primary: 35H20, 35J20, 35J61, 35R03
Milestones
Received: 6 August 2019
Accepted: 11 October 2019
Published: 29 April 2020
Authors
Claudio Afeltra
Scuola Normale Superiore
Pisa
Italy