Henrik Winkler

Ascent, descent, nullity, defect, and related notions for linear relations in linear spaces

Adrian Sandovici, Henk de Snoo, Henrik Winkler · Linear Algebra and its Applications · 2007 · 88 citations

Linear Operator, Linear Relations, Algebraic Method +6

Boundary-value problems for two-dimensional canonical systems

Seppo Hassi, Henk de Snoo, Henrik Winkler · Integral Equations and Operator Theory · 2000 · 85 citations

Global Analysis, Boundary-value Problems, Geometric Singular Perturbation Theory +1

The inverse spectral problem for canonical systems

Henrik Winkler · Integral Equations and Operator Theory · 1995 · 75 citations

Spectral Theory, Inverse Spectral Problem, Engineering +5

Direct and inverse spectral problems for generalized strings

Heinz Langer, Henrik Winkler · Integral Equations and Operator Theory · 1998 · 45 citations

Spectral Theory, Generalized Strings, M-theory +3

A general factorization approach to the extension theory of nonnegative operators and relations

Seppo Hassi, Adrian Sandovici, Henk de Snoo et al. · University of Groningen research database (University of Groningen / Centre for Information Technology) · 2007 · 45 citations

Infinite Dimensional Analysis, Analogous Factorizations, Linear Operator +13