Similar to 昇降演算子

Spectral set

Normal operator

Densely defined operator

Transfer operator

De Branges space

Trace class

Sz.-Nagy's dilation theorem

Normed vector space

Hardy space

Hyponormal operator

Paranormal operator

Unbounded operator

Compact operator on Hilbert space

Hilbert–Schmidt operator

Hilbert–Schmidt integral operator

Von Neumann's inequality

Partial isometry

Hecke operator

Calculus of variations

Finite-rank operator

Unitary operator

Riesz–Thorin theorem