On support properties of Lp-functions and their Fourier transforms

Two subspaces

Paul R. Halmos · Transactions of the American Mathematical Society · 1969 · 237 citations

Uniqueness of the self-adjoint extension of singular elliptic differential operators

Teruo Ikebe, Tosio Kato · Archive for Rational Mechanics and Analysis · 1962 · 189 citations

Spectral Theory, Elliptic Equation, Engineering +5

The numerical range of a pair of projections

Andrew Lenard · Journal of Functional Analysis · 1972 · 56 citations

Mathematical Programming, Engineering, Numerical Range +6

On the characterization of bound states and scattering states in quantum mechanics

Werner O. Amrein, Vladimir Georgescu · E-Periodica · 1974 · 38 citations · Full text

The quantum probability calculus

J. M. Jauch · Synthese · 1974 · 21 citations · Full text

Quantum Science, Engineering, Quantum Computing +5