Existence results for damped regular equations under periodic or Neumann boundary conditions
DATE:
2022-05
UNIVERSAL IDENTIFIER: http://hdl.handle.net/11093/3131
EDITED VERSION: https://linkinghub.elsevier.com/retrieve/pii/S0022247X2101060X
UNESCO SUBJECT: 12 Matemáticas
DOCUMENT TYPE: article
ABSTRACT
We present a version of the averaging and a method to construct lower and upper solutions in the reversed order that are suitable for both the periodic and the Neumann boundary conditions. As an application, we obtain new results for a periodic problem related to the Liebau phenomenon and for a Neumann boundary value problem arising in fluid dynamics.