Inner product spaces.

Aleksandrov-Rassias problems on distance preserving mappings by: (Language materials, printed)

Partial inner product spaces = theory and applications / by: (Language materials, printed)

Theory of approximate functional equations : = in Banach algebras, inner product spaces and amenable groups / by: (Language materials, printed)

Inner product spaces.

Banach algebras.

Quantum Field Theories, String Theory.

Topology.

Mathematics.

Functional differential equations.

Operator Theory.

Information and Communication, Circuits.

Functional Analysis.

Geometry.

Hilbert space.