Fredholm Kernel: Mathematics, Banach Space, Nuclear Operator

Trace Class: Nuclear Operator, Compact (Linear Algebra), Banach Space, Hilbert Space

Fredholm Operator: Mathematics, Theory, Integral Equation

Pseudo Monotone Operator: Mathematics, Banach Space, Continuous Dual Well Behaved

Unbounded Operator: Mathematics, Functional Analysis, Operator Theory, Differential Operator, Observable, Bounded Hilbert...