Geometric Analysis of the Generalized Surface Quasi-Geostrophic Equations

Autor: Bauer, Martin, Heslin, Patrick, Misiołek, Gerard, Preston, Stephen C.
Rok vydání: 2023
Předmět:
Druh dokumentu: Working Paper
Popis: We investigate the geometry of a family of equations in two dimensions which interpolate between the Euler equations of ideal hydrodynamics and the inviscid surface quasi-geostrophic equation. This family can be realised as geodesic equations on groups of diffeomorphisms. We show precisely when the corresponding Riemannian exponential map is non-linear Fredholm of index 0. We further illustrate this by examining the distribution of conjugate points in these settings via a Morse theoretic approach.
Databáze: arXiv