Similar to 直交関数列

Noncommutative geometry

Unbounded operator

Hilbert space

Von Neumann algebra

Partial isometry

Friedrichs's inequality

Fréchet–Kolmogorov theorem

Fredholm kernel

Fredholm's theorem

Discontinuous linear map

Freudenthal spectral theorem

Closed graph theorem

Closed linear operator

Closed range theorem

Baire space

Baire category theorem

Vector measure

Hecke operator

Beppo-Levi space

Pettis integral

Hölder condition

Bochner space

Essential spectrum

Mazur's lemma

Mackey topology

Marcinkiewicz interpolation theorem

Minkowski functional