Research Output per year

## Fingerprint Dive into the research topics where Gerald Wanjala is active. These topic labels come from the works of this person. Together they form a unique fingerprint.

Krein Space
Mathematics

Linear Relation
Mathematics

Subspace
Mathematics

Extension Theorem
Mathematics

Hilbert spaces
Engineering & Materials Science

Invariant Subspace
Mathematics

Bounded Linear Operator
Mathematics

Operator
Mathematics

## Research Output 2012 2018

- 9 Citations
- 1 h-Index
- 4 Article

## An Extension Theorem for a Sequence of Krein Space Contractions

Wanjala, G., Jan 1 2018, In : International Journal of Mathematics and Mathematical Sciences. 2018, 5178454.Research output: Contribution to journal › Article

Krein Space

Extension Theorem

Contraction

Subspace

Necessary Conditions

## Operator representation of sectorial linear relations and applications

Wanjala, G., 2015, In : Journal of Inequalities and Applications. 2015, 1, p. 1-16 16 p.Research output: Contribution to journal › Article

Linear Relation

Hilbert spaces

Operator

Sectorial Operator

Closed

9
Citations
(Scopus)

## Compressions of maximal dissipative and self-adjoint linear relations and of dilations Dedicated to Harm Bart - A fine colleague and good friend.

Azizov, T. Y., Dijksma, A. & Wanjala, G., Aug 1 2013, In : Linear Algebra and Its Applications. 439, 3, p. 771-792 22 p.Research output: Contribution to journal › Article

Linear Relation

Dilation

Compression

Non-negative

Self-adjoint Extension

## The invariant subspace problem for absolutely p-summing operators in Krein spaces

Wanjala, G., 2012, In : Journal of Inequalities and Applications. 2012, 254.Research output: Contribution to journal › Article

Krein Space

Invariant Subspace

Bounded Linear Operator

Subspace

Invariant