Bulletin of the American Mathematical Society · 1983 · 547 citations · 27 references
Natural SciencesMathematicsPhysicsDifferential EquationsMathematical PhysicsTheoretical PhysicsExistence TheoremsExistence TheoryRegular SolutionsSchrödinger EquationVariational PrinciplesWeak FormulationClassical SolutionsExistence Of MinimizersRegularity TheoryUncertainty PrinciplesUniqueness Of SolutionsWeak Solutions
On considere l'existence et la regularite des solutions d'equations aux derivees partielles, la construction de solutions fondamentales explicites et les valeurs propres d'operateurs de Schrodinger
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Hypoelliptic second order differential equations
Lars Hörmander · Acta Mathematica · 1967 · 2.4K citations · Full text
Gerald B. Folland, E. M. Stein · Communications on Pure and Applied Mathematics · 1974 · 972 citations
The spectral function of an elliptic operator
Lars Hörmander · Acta Mathematica · 1968 · 873 citations · Full text