Closedness of the Range for Vector Fields on the Torus

TOPOLOGICAL VECTOR SPACES, DISTRIBUTIONS AND KERNELS

B. Fishel · Bulletin of the London Mathematical Society · 1969 · 1.2K citations

Natural Sciences, Mathematics, Probability Theory +10

Global hypoellipticity and Liouville numbers

Stephen J. Greenfield, Nolan R. Wallach · Proceedings of the American Mathematical Society · 1972 · 96 citations

Natural Sciences, Mathematics, Differential Equations +6

Globally hypoelliptic and globally solvable first-order evolution equations

Jorge Hounie · Transactions of the American Mathematical Society · 1979 · 49 citations · Full text

Natural Sciences, Mathematics, Differential Equations +2

Functions Which are Divergences

Carl Herz · American Journal of Mathematics · 1970 · 23 citations

Natural Sciences, Mathematics, Physics +6