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Geophysics and Stuart vortices on a sphere meet differential geometry
Author(s) -
Łukasz Rudnicki
Publication year - 2022
Publication title -
communications on pure and applied analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.077
H-Index - 42
eISSN - 1553-5258
pISSN - 1534-0392
DOI - 10.3934/cpaa.2022075
Subject(s) - mathematics , geometry , physics , combinatorics
We prove new existence criteria relevant for the non-linear elliptic PDE of the form \begin{document}$ \Delta_{S^2} u = C-he^{u} $\end{document} , considered on a two dimensional sphere \begin{document}$ S^2 $\end{document} , in the parameter regime \begin{document}$ 2\leq C<4 $\end{document} . We apply this result, as well as several previously known results valid when \begin{document}$ C<2 $\end{document} , to discuss existence of solutions of a particular PDE modelling ocean surface currents.

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