University of Groningen

Johann Bernoulli Institute for Mathematics and Computer Science

Henk de Snoo

**Affiliation**
H.S.V. de Snoo

University of Groningen

Johann Bernoulli Institute for Mathematics and Computer Science

P.O. Box 407

9700 AK Groningen

Nederland

Bernoulliborg, room 478

Phone : +31 (0)50 3633963

Fax : +31 (0)50 3633800

Phone : +31 (0)50 3633939/3633950 (secretary)

Email : `desnoo@math.rug.nl`

**Research**

**Spectral theory in Hilbert spaces and in indefinite
inner-product spaces**

**
**

**Abstract boundary-value problems**

**Semibounded and sectorial relations and forms, and their decompositions**

**Structure of linear relations**

**Classification of (generalized) Nevanlinna functions;
asymptotic expansions**

**Singular perturbations of selfadjoint operators**

**Canonical systems of differential equations;
Sturm-Liouville equations (with floating singularities)**

**System-theoretic realizations of classes of
Nevanlinna functions and Nevanlinna families**

**Preprints **

**J. Behrndt, S. Hassi, H.S.V. de Snoo, H.L. Wietsma, and H. Winkler,
Linear fractional transformations of Nevanlinna functions
associated with a nonnegative operator
**

**J.-Ph. Labrousse, A. Sandovici, H.S.V. de Snoo, and H. Winkler,
Closed linear relations and their regular points
**

** H.S.V. de Snoo and H. Woracek,
Sums, couplings, and completions of almost Pontryagin spaces
**

** S. Hassi, H.S.V. de Snoo, and F. H. Szafraniec (editors),
Operator methods for boundary value problems,
London Mathematical Society, Lecture Note Series 404, Cambridge University Press, to appear.
**

**Publications **

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Recent publications
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**Teaching**

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Functional analysis (4th period 2012-2013)
**

**
Measure and integration (1st period 2013-2014)
**

**Workshop December 14-December 17, 2010**

**
Systems and Operators
**

** Go to**

**
Department of Mathematics
**

**
Johann Bernoulli Stichting voor de Wiskunde**

**
Samuel Pepys
**

**
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Comments via H.S.V. de Snoo

Last modified: April 11, 2012