In the list below you can download my personal preprints for all publications.
Here is the link to ZBMATH where you find DOI and links to publishers and arXiv:
zbmath
Manuscripts currently under review
B.EICHINGER, M.LUKIC, H.WORACEK:
Necessary and sufficient conditions for universality limits,
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B.EICHINGER, H.WORACEK:
Homogeneous spaces of entire functions,
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R.PRUCKNER, J.REIFFENSTEIN, H.WORACEK:
An upper bound for the Nevanlinna matrix of an indeterminate moment sequence,
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Journal papers
M.LANGER, H.WORACEK:
Karamata's theorem for regularised Cauchy transforms,
Proc. A Royal Soc. Edinburgh (to appear).
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M.LANGER, R.PRUCKNER, H.WORACEK:
Estimates for the Weyl coefficient of a two-dimensional canonical system,
Ann. Norm. Super. Pisa (to appear).
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S.SIMONOV, H.WORACEK:
Local spectral multiplicity of selfadjoint couplings with general interface conditions,
Integral Equations Operator Theory 96:18 (2024), 35p..
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M.LANGER, R.PRUCKNER, H.WORACEK:
Canonical systems whose Weyl coefficients have dominating real part,
Journal d'Analyse Mathematique 152 (2024), 361-400.
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M.LANGER, H.WORACEK:
Direct and inverse spectral theorems for a class of canonical systems with two singular endpoints,
Fields Insitute Communications 87 (2023), 105-205.
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R.PRUCKNER, H.WORACEK:
A growth estimate for the monodromy matrix of a canonical system,
J. Spectral Theory 12 (2022), 1623-1657.
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A.SOKOLOVA, H.WORACEK:
Nawrotzki’s Algorithm for the Countable Splitting Lemma, Constructively,
9th Conference on Algebra and Coalgebra in Computer Science (CALCO 2021), LIPIcs 211 (2021), 23:1--23:16.
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R.PRUCKNER, H.WORACEK:
Limit behaviour of Nevanlinna functions,
Algebra i Analiz 33(5) (2021), 153-175 / St. Petersburg Math. J. 33 (2022), 849--865.
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Extended preprint:
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R.ROMANOV, H.WORACEK:
Canonical systems with discrete spectrum,
J. Funct. Anal. 278(4) (2020), 108318 (44p).
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R.PRUCKNER, H.WORACEK:
Estimates for order of Nevanlinna matrices and a Berezanskii-type theorem,
Proc. Edinburgh Math. Soc. 149(6) (2019), 1637-1661.
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Extended preprint:
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A.BARANOV, H.WORACEK:
Stability of order and type under perturbation of the spectral measure,
Revista Mathematica Iberoamericana 35(4) (2019), 963-1026.
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Extended preprint:
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A.SOKOLOVA, H.WORACEK:
Termination in Convex Sets of Distributions (journal version),
Logical Methods in Computer Science 14(4:17) (2018), 1-28.
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A.SOKOLOVA, H.WORACEK:
Proper Semirings and Proper Convex Functors,
21st International Conference on Foundations of Software Science and Computation Structures (FoSSaCS) 2018,
LNCS 10803 (2018), 331-347.
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H.WORACEK:
Perturbation of chains of de Branges spaces,
Journal d'Analyse Mathematique 135 (2018), 271-312.
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H.de SNOO, H.WORACEK:
The Krein formula in almost Pontryagin spaces. A proof via orthogonal coupling,
Indag. Math. 29 (2018), 714-729.
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H.de SNOO, H.WORACEK:
Compressed resolvents, Q-functions and h0-resolvents in almost Pontryagin spaces,
Oper. Theory Adv. Appl. 263 (2018), 425-484.
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A.SOKOLOVA, H.WORACEK:
Termination in Convex Sets of Distributions,
Proceedings of the 7th Conference on Algebra and Coalgebra in Computer Science, LIPICS 72 (2017), 22:1-22:16.
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H.WORACEK:
Directing functionals and de Branges space completions in the almost Pontryagin space setting,
Advances in Complex Analysis and Operator Theory, Trends in Mathematics (2017), 347-398.
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R.PRUCKNER, R.ROMANOV, H.WORACEK:
Bounds on order of indeterminate moment sequences,
Constr. Approx. 46 (2017), 199-225.
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Extended version:
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H.de SNOO, H.WORACEK:
Restriction and factorization for isometric and symmetric operators in almost Pontryagin spaces,
Oper. Theory Adv. Appl. 252 (2016), 123-170.
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H.WORACEK:
De Branges spaces and growth aspects,
Springer Reference, DOI 10.1007/978-3-0348-0692-3\_7-1.
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M.LANGER, H.WORACEK:
Distributional representations of Nκ∞-functions,
Math. Nachr. 288(10) (2015), 1127-1149.
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H.WORACEK:
Asymptotics of eigenvalues for a class of singular Krein strings,
Collect. Math. 66 (2015), 469-479.
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A.SOKOLOVA, H.WORACEK:
Congruences of Convex Algebras,
J. Pure Appl. Algebra 219 (2015), 3110-3148.
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M.LANGER, H.WORACEK:
Stability of N-extremal measures,
Methods Funct. Anal. Topology 21(1) (2015), 69-75.
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H.WORACEK:
Entries of indefinite Nevanlinna matrices,
Algebra i Analiz 26(5) (2014), 88-124 / St. Petersburg Math. J. 26 (2015), 757-783.
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H.WORACEK:
Reproducing kernel almost Pontryagin spaces,
Linear Algebra Appl. 461 (2014) 271-317.
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M.LANGER, H.WORACEK:
Stability of the derivative of a canonical product,
Complex Anal. Oper. Theory 8(6) (2014), 1183-1224.
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H.WINKLER, H.WORACEK:
A growth condition for Hamiltonian systems related with Krein strings,
Acta Sci. Math. (Szeged) 80 (2014), 31-94.
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S.SIMONOV, H.WORACEK:
Spectral multiplicity of selfadjoint Schrödinger operators on star-graphs with standard interface
conditions,
Integral Equations Operator Theory 78 (2014), 523-575.
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H.WINKLER, H.WORACEK:
Symmetry in de Branges almost Pontryagin spaces,
Integral Equations Operator Theory 76 (2013), 179-212.
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M.LANGER, H.WORACEK:
Indefinite Hamiltonian systems whose Titchmarsh-Weyl coefficients have no finite
generalized poles of non-negative type,
Operators and Matrices 7(3) (2013), 477-555.
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M.LANGER, H.WORACEK:
The exponential type of the fundamental solution of an indefinite Hamiltonian system,
Complex Anal.Oper.Theory 7(1) (2013), 285-312.
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A.BARANOV, H.WORACEK:
De Branges' theorem on approximation problems of Bernstein type,
J. Inst. Math. Jussieu 12(4) (2013), 879-899.
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H.WINKLER, H.WORACEK:
Reparameterizations of non trace-normed Hamiltonians,
Oper.Theory Adv.Appl. 221 (2012), 667-690.
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H.de SNOO, H.WORACEK:
Sums, couplings, and completions of almost Pontryagin spaces,
Lin. Alg. Appl. 437(2) (2012), 559-580.
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H.WORACEK:
An Inverse Spectral Theorem for M.G.Krein strings with a negative eigenvalue,
Monatsh. Math. 167(1) (2012), 105-149.
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A.BARANOV, H.WORACEK:
Majorization in de Branges spaces II. Banach spaces generated by majorants,
Collect. Math. 62 (2011), 27-55.
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V.PIVOVARCHIK, H.WORACEK:
Eigenvalue Asymptotics for a Star-Graph Damped Vibrations Problem,
Asymptotic Analysis 73(3) (2011), 169-185.
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M.LANGER, H.WORACEK:
A function space model for canonical systems with an inner singularity,
Acta Sci. Math. (Szeged) 77 (2011), 101-165.
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M.KALTENBÄCK, H.WORACEK:
Pontryagin spaces of entire functions V,
Acta Sci. Math. (Szeged) 77 (2011), 223-336.
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M.LANGER, H.WORACEK:
A local inverse spectral theorem for Hamiltonian systems,
Inverse Problems 27 (2011) 055002, doi: 10.1088/0266-5611/27/5/055002, 17pp.
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H.WORACEK:
Existence of zerofree functions N-associated to a de Branges Pontryagin space,
Monatsh. Math. 162 (2011), 453-506.
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M.KALTENBÄCK, H.WORACEK:
Pontryagin spaces of entire functions VI,
Acta Sci. Math. (Szeged) 76 (2010), 511-560
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A.BARANOV, H.WORACEK:
Majorization in de Branges spaces I. Representability of subspaces,
J. Funct. Anal. 258 (2010), 2601-2636.
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A.BARANOV, H.WORACEK:
Majorization in de Branges spaces III. Division by Blaschke products,
Algebra i Analiz 21(6) (2009), 3-46 / St.Petersburg Math. J. 21(6) (2010), 843-875.
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A.SOKOLOVA, E.de VINK, H.WORACEK:
Coalgebraic weak bisimulation for action-type systems,
Sci. Ann. Comput. Sci. 19 (2009), 93-144.
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V.PIVOVARCHIK, H.WORACEK:
Sums of Nevanlinna functions and differential equations on star shaped graphs,
Oper. Matrices 3 (4) (2009), 451-501.
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A.BARANOV, H.WORACEK:
Subspaces of de Branges spaces generated by majorants,
Canad. J. Math. 61 (3) (2009), 503-517.
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Extended version:
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M.LANGER, H.WORACEK:
Dependence of the Weyl coefficient on singular interface conditions,
Proc. Edinburgh Math. Soc. 52 (2009), 445-487.
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A.BARANOV, H.WORACEK:
Finite dimensional de Branges spaces generated by majorants,
Oper. Theory Adv. Appl. 188 (2009), 37-48.
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H.WINKLER, H.WORACEK:
On semibounded canonical systems,
Lin. Alg. Appl. 429 (2008), 1082-1092.
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V.PIVOVARCHIK, H.WORACEK:
The square transform of Hermite-Biehler functions. A geometric approach,
Methods of Functional Analysis and Topology 13 (2) (2007), 187-200.
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M.KALTENBÄCK, H.WINKLER, H.WORACEK:
Strings, dual strings and related canonical systems,
Math.Nachr. 280 (13-14) (2007), 1518-1536.
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M.KALTENBÄCK, H.WORACEK:
Canonical differential equations of Hilbert-Schmidt type,
Operator Theory Adv.Appl. 175 (2007), 159-168.
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V.PIVOVARCHIK, H.WORACEK:
Shifted Hermite-Biehler functions and their applications,
Integral Equations Operator Theory 57 (1) (2007), 101-126.
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M.KALTENBÄCK, H.WORACEK:
Schmidt-representation of difference quotient operators,
Operator Theory Adv.Appl. 171 (2007), 147-170.
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M.KALTENBÄCK, H.WINKLER, H.WORACEK:
DeBranges spaces of entire functions symmetric about the origin,
Integral Equations Operator Theory 56 (4) (2006), 483-509.
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M.KALTENBÄCK, H.WORACEK:
Pontryagin spaces of entire functions IV,
Acta Sci.Math. (Szeged) 72 (3/4) (2006), 709-835.
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A.BARANOV, H.WORACEK:
Subspaces of de Branges spaces with prescribed growth,
Algebra i Analiz 18 (5) (2006), 23-45 / St.Petersburg Math. J. 18 (2007), 699-716.
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M.KALTENBÄCK, H.WINKLER, H.WORACEK:
Singularities of generalized strings,
Operator Theory Adv.Appl. 163 (2006), 191-248.
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M.KALTENBÄCK, H.WINKLER, H.WORACEK:
Generalized Nevanlinna functions with essentially positive spectrum,
J.Oper.Theory 55 (1) (2006), 101-132.
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M.KALTENBÄCK, H.WORACEK:
Unique prime factorization in a partial semigroup of matrix-polynomials,
Discussiones Mathematicae 26 (1) (2006), 21-43.
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M.KALTENBÄCK, H.WINKLER, H.WORACEK:
Symmetric relations of finite negativity,
Operator Theory Adv.Appl. 162 (2006), 191-210.
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A.SOKOLOVA, E.DE VINK, H.WORACEK:
Weak Bismulation for action type coalgebras,
Electronic Notes in Theoretical Computer Science 122 (2005), 211-228; Extended Version as CS-Report 04/16, TU/e.
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Extended version available as
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M.KALTENBÄCK, H.WINKLER, H.WORACEK:
Almost Pontryagin spaces,
Operator Theory Adv.Appl. 160 (2005), 253-271.
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M.KALTENBÄCK, H.WORACEK:
DeBranges spaces of exponential type: General theory of growth,
Acta Sci.Math (Szeged) 71 (1/2) (2005), 231-284.
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M.KALTENBÄCK, H.WORACEK:
Hermite-Biehler functions with zeros close to the imaginary axis,
Proceedings AMS 133(1) (2005), 245-255.
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M.KALTENBÄCK,
H.WORACEK:
Polya class theory for Hermite-Biehler functions of finite order,
Journal of the London Math.Soc.(2) 68 (2003), 338-354.
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M.KALTENBÄCK, H.WORACEK:
Pontryagin spaces of entire functions III,
Acta Sci. Math. (Szeged) 69 (2003), 241-310.
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M.LANGER, H.WORACEK:
A characterization of intermediate Weyl coefficients,
Monatshefte für Mathematik 135 (2002), 137-155.
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H.WORACEK:
De Branges spaces of entire functions closed under forming difference quotients,
Integral Equations Operator Theory 37(2) (2000), 238-249.
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H.WORACEK:
Resolvent matrices in degenerated inner product spaces,
Mathematische Nachrichten 213 (2000), 155-175.
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M.KALTENBÄCK, H.WORACEK:
Pontryagin spaces of entire functions II,
Integral Equations Operator Theory 33 (1999), 305-380.
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M.KALTENBÄCK, H.WORACEK:
Pontryagin spaces of entire functions I,
Integral Equations Operator Theory 33 (1999), 34-97.
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G.DORFER, H.WORACEK:
Formal power series and some Theorems of J.F.Ritt,
Monatsh. f. Math. 127 (1999), 277-293.
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M.KALTENBÄCK, H.WORACEK:
The Krein formula for generalized resolvents in degenerated inner product spaces,
Monatshefte für Mathematik 127 (1999), 119-140.
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M.KALTENBÄCK, H.WORACEK:
On representations of matrix valued Nevanlinna functions by u-resolvents,
Mathematische Nachrichten 205 (1999), 115-130.
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M.KALTENBÄCK, H.WORACEK:
Generalized resolvent matrices and spaces of analytic functions,
Integral Equations Operator Theory 32 (1998), 282-318.
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G.EIGENTHALER, H.WORACEK:
A remark on permutable polynomials,
Contributions to General Algebra 10 (1998), 139-142.
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M.KALTENBÄCK, H.WORACEK:
On extensions of hermitian functions with a finite number of negative squares,
J. Operator Theory 40 (1998), 147-183.
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S.HASSI, H.DE SNOO, H.WORACEK:
Some interpolation problems of Nevanlinna-Pick type. I. The Krein-Langer method,
Oper. Theory Adv. Appl. 106 (1998), 201-216.
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H.LANGER, H.WORACEK:
Resolvents of symmetric operators. The degenerated Nevanlinna-Pick problem,
Oper. Theory Adv. Appl. 103 (1998), 233-261.
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M.KALTENBÄCK,
H.WORACEK:
Selfadjoint extensions of symmetric operators in degenerated inner
product spaces,
Integral Equations Operator Theory 28 (1997), 289-320.
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H.WORACEK:
Multiple point interpolation in Nevanlinna-classes,
Integral Equations Operator Theory 28 (1997), 97-109.
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H.WORACEK:
Nevanlinna-Pick interpolation: the degenerated case,
Linear Algebra and its Applications 252 (1997), 141-158.
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H.WORACEK:
On the existence of congruence-uniform structures on universal algebras,
Algebra Universalis 36 (1996), 141-158.
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H.WORACEK:
A remark on affine complete rings,
Studia Scientiarum Mathematicarum Hungaricae 32 (1996), 103-106.
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G.EIGENTHALER, H.WORACEK:
Permutable polynomials and related topics,
Contributions to General Algebra 9 (1995), 163-182.
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H.WORACEK:
An operator theoretic approach to degenerated Nevanlinna-Pick interpolation,
Mathematische Nachrichten 176 (1995), 335-350.
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H.WORACEK:
Inductive topologies in universal algebras,
Contributions to General Algebra 9 (1995), 325-331.
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