Functional analysis Dynamical systems and ergodic theory -- Ergodic theory -- Relations with the theory of -algebras Functional analysis -- Selfadjoint operator algebras (algebras, von Neumann algebras, etc.) -- General theory of -algebras Functional analysis -- Selfadjoint operator algebras (algebras, von Neumann algebras, etc.) -- General theory of von Neumann algebras Functional analysis -- Selfadjoint operator algebras (algebras, von Neumann algebras, etc.) -- Nonassociative selfadjoint operator algebras Functional analysis -- Selfadjoint operator algebras (algebras, von Neumann algebras, etc.) -- Noncommutative topology MATHEMATICS / Functional Analysis Number theory -- Arithmetic algebraic geometry (Diophantine geometry) -- Abelian varieties of dimension Operator theory Ordinary differential equations -- Boundary value problems -- Sturm-Liouville theory Ordinary differential equations -- General theory -- Implicit equations, differential-algebraic equations Banach-Raum Hilbert-Raum Metrischer Raum Analyse fonctionnelle Funktionalanalysis Hahn-Banach-Fortsetzungssatz Lebesgue integral Lebesgue-Integral Lp-Raum Maßtheorie Messbare Funktion Operatortheorie Reelle Analysis Spektraltheorie Théorie des opérateurs