Functions, Quaternion.

Real quaternionic calculus handbook by: (Electronic resources)

Quaternionic approximationwith application to slice regular functions / by: (Electronic resources)

Quaternionic de Branges spaces and characteristic operator function by: (Electronic resources)

Quaternion algebras by: (Electronic resources)

Regular functions of a quaternionic variable by: (Electronic resources)

Associative Rings and Algebras.

Group Theory and Generalizations.

Algebra.

Combinatorics.

Operator Theory.

Mathematics.

Non-associative Rings and Algebras.

Approximation theory.

Functions of a Complex Variable.

Approximations and Expansions.

Number Theory.

Functions of complex variables.

Linear and Multilinear Algebras, Matrix Theory.

Functional Analysis.

Quaternions.

Functions, Quaternion.

Matrix theory.

Combinatorial analysis.

Sequences, Series, Summability.

Geometry.