This issuePrevious ArticleDistortion and entropy for
automorphisms of free groupsNext ArticleAbsolutely continuous spectrum of some group extensions of Gaussian actions
Unique subsonic compressible potential flows in three -dimensional
ducts
We establish the uniqueness of subsonic potential flows in a
three-dimensional finite duct, a semi-infinite duct and an
infinite duct with quadrate sections, as well as flows in half space
and whole space. Moreover, some extremum principles for the related
elliptic equations are proved under suitable assumptions in
unbounded domains.