Maximum principles for a class of first-order elliptical systems

MAXIMUM PRINCIPLES IN DIFFERENTIAL EQUATIONS

D. E. Edmunds · Journal of the London Mathematical Society · 1969 · 638 citations

Numerical Analysis, Prentice/hall International, Hans F. Weinberger +5

A function‐theoretic approach to elliptic systems of equations in two variables

Avron Douglis · Communications on Pure and Applied Mathematics · 1953 · 123 citations

Elliptic Equation, Function‐theoretic Approach, Elliptic Function +4

On matrices whose real linear combinations are non-singular

J. F. Adams, Peter D. Lax, Ralph S. Phillips · Proceedings of the American Mathematical Society · 1965 · 105 citations · Full text

Spectral Theory, Real Linear Combinations, Representation Theory +7

On Matrices Whose Real Linear Combinations are Nonsingular

J. F. Adams, Peter D. Lax, Ralph S. Phillips · Proceedings of the American Mathematical Society · 1965 · 33 citations

Matrix Method, Matrix Theory, Matrix Analysis

Note on An Algebraic Theorem of Eddington

M. H. A. Newman · Journal of the London Mathematical Society · 1932 · 25 citations

Real Algebraic Geometry, Algebraic Analysis, Algebraic Theorem +1