Wissenschaftliche Artikel

Langer, M., & Woracek, H. (2024). Karamata’s theorem for regularized Cauchy transforms. PROCEEDINGS OF THE ROYAL SOCIETY OF EDINBURGH SECTION A-MATHEMATICS, 1–61. https://doi.org/10.1017/prm.2023.128 ( reposiTUm)
Langer, M., Pruckner, R., & Woracek, H. (2023). Canonical systems whose Weyl coefficients have dominating real part. Journal d’Analyse Mathématique, 1–40. https://doi.org/10.1007/s11854-023-0297-9 ( reposiTUm)
Langer, M., & Woracek, H. (2015). Stability of N-extremal measures. Methods of Functional Analysis and Topology, 21(1), 69–75. http://hdl.handle.net/20.500.12708/151620 ( reposiTUm)
Langer, M., & Woracek, H. (2015). Distributional representations of Nk(∞)-functions. Mathematische Nachrichten, 288(10), 1127–1149. http://hdl.handle.net/20.500.12708/151623 ( reposiTUm)
Langer, M., & Woracek, H. (2014). Stability of the derivative of a canonical product. Complex Analysis and Operator Theory, 8(6), 1183–1224. http://hdl.handle.net/20.500.12708/157125 ( reposiTUm)
Langer, M., & Woracek, H. (2013). Indefinite Hamiltonian systems whose Titchmarsh--Weyl coefficients have no finite generalized poles of non-negative type. OPERATORS AND MATRICES, 3, 477–555. https://doi.org/10.7153/oam-07-29 ( reposiTUm)
Langer, M., & Woracek, H. (2013). The exponential type of the fundamental solution of an indefinite Hamiltonian system. Complex Analysis and Operator Theory, 7(1), 285–312. https://doi.org/10.1007/s11785-011-0152-3 ( reposiTUm)
Langer, M., & Woracek, H. (2011). A local inverse spectral theorem for Hamiltonian systems. Inverse Problems, 27(5), 055002. https://doi.org/10.1088/0266-5611/27/5/055002 ( reposiTUm)
Langer, M., & Woracek, H. (2011). A function space model for canonical systems with an inner singularity. Acta Scientiarum Mathematicarum, 77(1–2), 101–165. https://doi.org/10.1007/bf03651369 ( reposiTUm)
Langer, M., & Woracek, H. (2009). Dependence of the Weyl coefficient on singular interface conditions. Proceedings of the Edinburgh Mathematical Society, 52, 445–487. http://hdl.handle.net/20.500.12708/166495 ( reposiTUm)
Langer, H., Langer, M., Markus, A., & Tretter, C. (2005). Spectrum of definite type of self-adjoint operators in Krein spaces. LINEAR & MULTILINEAR ALGEBRA, 53, 115–136. http://hdl.handle.net/20.500.12708/171893 ( reposiTUm)

Beiträge in Büchern

Langer, M., & Woracek, H. (2023). Direct and Inverse Spectral Theorems for a Class of Canonical Systems with Two Singular Endpoints. In I. Binder, D. Kinzebulatov, & J. Mashreghi (Eds.), Function Spaces, Theory and Applications (Vol. 87, pp. 105–205). Springer. https://doi.org/10.1007/978-3-031-39270-2_5 ( reposiTUm)

Bücher

Langer, M., Luger, A., & Woracek, H. (2006). Operator Theory and Indefinite Inner Product Spaces. Birkhäuser. http://hdl.handle.net/20.500.12708/22168 ( reposiTUm)

Präsentationen

Langer, M. (2003). Eigenvalue enclosures for the singular Sturm-Liouville problem with a complex potential. GAMM-Tagung 2003, Abano Terme, Abano Terme, Italien, Austria. http://hdl.handle.net/20.500.12708/116478 ( reposiTUm)
Langer, M. (2003). Eigenvalue enclosures for the singular Strum-Liouville problem with a complex potential. 3rd conf.European research Network: Analysis and operators, Tenerife, Spanien, Austria. http://hdl.handle.net/20.500.12708/116479 ( reposiTUm)
Langer, M. (2003). Continuation of hermitian indefinite functions and corresponding canonical systems: an example. IWOTA 2003 Cagliari, Cagliari, Italien, Austria. http://hdl.handle.net/20.500.12708/116480 ( reposiTUm)
Langer, M. (2003). Resonances and spectral concentration of a Sturm-Liouville problem depending rationally on the eigenvalue parameter. 5th Int.Congr.Ind.and Appl.Math. (ICIAM), Sydney, Sydney, Australien, Austria. http://hdl.handle.net/20.500.12708/116481 ( reposiTUm)
Langer, M. (2003). Resonances and spectral concentration of a Sturm-Liouville problem depending rationally on the eigenvalue parameter. Math.Seminar Auckland, Auckland, Neuseeland, Austria. http://hdl.handle.net/20.500.12708/116482 ( reposiTUm)
Langer, M. (2003). Eigenvalue enclosures for the singular Sturm-Liouville problem with a complex potential. Workshop Operator Th -Gohberg, Amsterdam, Austria. http://hdl.handle.net/20.500.12708/116483 ( reposiTUm)
Langer, M. (2003). A general HELP inequality. Math. Seminar Bremen, Bremen, Austria. http://hdl.handle.net/20.500.12708/116484 ( reposiTUm)
Langer, M. (2003). Spectrum of definite type of self-adjoint operators in Krein spaces. 3rd Workshop Operator Th. in Krein Spaces, Berlin, TU Berlin, Austria. http://hdl.handle.net/20.500.12708/116485 ( reposiTUm)
Langer, M. (2002). A Sturm-Liouville problem depending rationally on the eigenvalue parameter. 4th Gregynog Workshop Oper.Th., Wales, Gregynog, Wales, GB, Austria. http://hdl.handle.net/20.500.12708/116475 ( reposiTUm)
Langer, M. (2002). Variational principles for eigenvalues of pencils of unbounded operators. 2nd Workshop Operator Theory in Krein Spaces and Applications, TU Berlin, Austria. http://hdl.handle.net/20.500.12708/116477 ( reposiTUm)
Langer, M. (2002). Variational principles for eigenvalues of pencils of inbounded operators. IWOTA Blacksburg 2002, Blacksburg, Virginia, Austria. http://hdl.handle.net/20.500.12708/116476 ( reposiTUm)
Langer, M. (2002). Varionational principles for operator pencils and block operator matrices. Seminar Cardiff, Cardiff, GB, Austria. http://hdl.handle.net/20.500.12708/116473 ( reposiTUm)
Langer, M. (2002). Variational principles for eigenvalues of pencils of unboundes operators. Deuxiema Conf.resaeu Europeen: Analysis and Operators, Biarritz, Austria. http://hdl.handle.net/20.500.12708/116474 ( reposiTUm)
Langer, M. (2000). A characterization of intermediate Wyl coefficients. IWOTA 2000-Portugal, Faro, Austria. http://hdl.handle.net/20.500.12708/116472 ( reposiTUm)
Langer, M. (2000). Über das Spektrum eines $\lambda$-rationalenturm-Liouville Problems. Math.Seminar Regensburg, Regensburg, Austria. http://hdl.handle.net/20.500.12708/116471 ( reposiTUm)
Langer, M. (2000). Embedded eigenvalues amd eigenvalues in a gap of the essential spectrum of some block operator matrix. IWOTA 2000, Bordeaux, Austria. http://hdl.handle.net/20.500.12708/116469 ( reposiTUm)
Langer, M. (2000). Eigenvalues of some block operator matrix. 18th Int.Conf.on Operator Theory, Timisoara, Timisoara, Austria. http://hdl.handle.net/20.500.12708/116470 ( reposiTUm)
Langer, M. (1999). Resonances of a $\lambda$-rational Sturm-Liouville problem. Functional Anal.and Appl.: Mem.Conference Skökefalvi-Nagy, Szeged, Austria. http://hdl.handle.net/20.500.12708/116468 ( reposiTUm)
Langer, M. (1998). Spectral properties of a $\lambda$-rational Sturm-Liouville problem. IWOTA 1998, Groningen, Groningen, Austria. http://hdl.handle.net/20.500.12708/116467 ( reposiTUm)
Langer, M. (1997). A Sturm-Liouville problem which depends rationally on the eigenvalue parameter. Funct.Anal.Meth.in Diff.Equ., Dubrovnik, Austria. http://hdl.handle.net/20.500.12708/116466 ( reposiTUm)
Langer, M. (1997). Embedded eigenvalues of a $\lambda$-rational Sturm-Liouville problem. Operator Theory Seminar, Krakau, Austria. http://hdl.handle.net/20.500.12708/116464 ( reposiTUm)
Langer, M. (1997). About a $\lambda$-rational Sturm-Liouville problem. Operator Theory Seminar, Krakau, Austria. http://hdl.handle.net/20.500.12708/116465 ( reposiTUm)

Berichte

Langer, M., & Woracek, H. (2015). Direct and inverse spectral theorems for a class of canonical systems with two singular endpoints (ASC Report 18/2015; pp. 1–85). Institute of Analysis and Scientific Computing, TU Wien. http://hdl.handle.net/20.500.12708/28646 ( reposiTUm)
Langer, M., & Woracek, H. (2013). Stability of N-extremal measures (ASC Report 05/2013; pp. 1–8). Institute of Analysis and Scientific Computing, TU Wien. http://hdl.handle.net/20.500.12708/27881 ( reposiTUm)
Langer, M., & Woracek, H. (2013). Distributional representations of ${\mathcal N}_{\kappa}^{(infty)}$-functions (ASC Report 17/2013; pp. 1–28). Institute of Analysis and Scientific Computing, TU Wien. http://hdl.handle.net/20.500.12708/27956 ( reposiTUm)
Langer, M., & Woracek, H. (2012). Stability of the derivative of a canonical product (ASC Report 38/2012; pp. 1–38). Institute of Analysis and Scientific Computing, TU Wien. http://hdl.handle.net/20.500.12708/27449 ( reposiTUm)
Langer, M., & Woracek, H. (2012). Indefinite Hamiltonian systems whose Titchmarsh-Weyl coefficients have no finite generalized poles of non-negative type (ASC Report 04/2012; pp. 1–73). Institute of Analysis and Scientific Computing, TU Wien. http://hdl.handle.net/20.500.12708/27530 ( reposiTUm)
Langer, M., & Woracek, H. (2010). The exponential type of the fundamental solution of an indefinite Hamiltonian system (ASC Report 30/2010). Institute of Analysis and Scientific Computing, TU Wien. http://hdl.handle.net/20.500.12708/26975 ( reposiTUm)
Langer, M., & Woracek, H. (2009). A local inverse spectral theorem for Hamiltonian systems (ASC Report 43/2009). Institute of Analysis and Scientific Computing, TU Wien. http://hdl.handle.net/20.500.12708/26501 ( reposiTUm)
Langer, M., & Woracek, H. (2009). A function space model for canonical systems with an inner singularity (ASC Report 30/2009). Institute of Analysis and Scientific Computing, TU Wien. http://hdl.handle.net/20.500.12708/26450 ( reposiTUm)
Langer, M., & Woracek, H. (2008). Dependence of the Weyl coefficient on singular interface conditions (ASC Report 03/2008). Institute of Analysis and Scientific Computing, TU Wien. http://hdl.handle.net/20.500.12708/25152 ( reposiTUm)