Deprecated: $wgMWOAuthSharedUserIDs=false is deprecated, set $wgMWOAuthSharedUserIDs=true, $wgMWOAuthSharedUserSource='local' instead [Called from MediaWiki\HookContainer\HookContainer::run in /var/www/html/w/includes/HookContainer/HookContainer.php at line 135] in /var/www/html/w/includes/Debug/MWDebug.php on line 372
Structural classification and stability of divergence-free vector fields - MaRDI portal

Structural classification and stability of divergence-free vector fields (Q696086)

From MaRDI portal





scientific article; zbMATH DE number 1799071
Language Label Description Also known as
English
Structural classification and stability of divergence-free vector fields
scientific article; zbMATH DE number 1799071

    Statements

    Structural classification and stability of divergence-free vector fields (English)
    0 references
    0 references
    0 references
    0 references
    10 September 2002
    0 references
    The authors prove that a divergence-free vector field \(v\) on a two dimensional submanifold of \(S^2\) is structurally stable with divergence-free vector field perturbations if and only if (1) \(v\) is regular, (2) all interior saddle points of \(v\) are self-connected, and (3) each boundary saddle point is connected to boundary saddles on the same connected component of the boundary.
    0 references
    divergence-free vector fields
    0 references
    manifolds with boundary
    0 references
    Poincaré-Bendixson theorem
    0 references

    Identifiers