Hamburg University of Technology / Institute of Mathematics / Staff / Dr. Christian Seifert / Publications German flag

Publications

Theses

C. Seifert Behandlung singulärer Diffusion mit Hilfe von Dirichletfomen Diplomarbeit. TU Dresden, Fachrichtung Mathematik, 2009. pdf
C. Seifert Measure-perturbed one-dimensional Schrödinger operators — A continuum model for quasicrystals. Dissertation. TU Chemnitz, Fakultät für Mathematik, 2012. pdf

Journals and Proceedings

K. Kruse, C. Seifert Implementing Computer-assisted Exams in a Course on Numerical Analysis for Engineering Students. Proceedings 19th SEFI MWG, Coimbra, Portugal (2018), 33-38.
M. Lindner, C. Seifert Finite Sections: A functional analytic perspective on approximation methods. GAMM-Mitteilungen 41, no 3, 201800013 (2018). Journal
D. Dahl, E. Frick, C. Seifert, M. Lindner, C. Schuster Multiscale Simulation of 2-D Photonic Crystal Structures Using a Contour Integral Method. IEEE Journal on Multiscale and Multiphysics Computational Techniques 4(1) (2019), 88-97. Journal
A. BenAmor, R. Moussa, C. Seifert A note on traces of forms with applications to the Bessel operator. erscheint in Proc. International Conference on Operator Theory, Hammamet, Tunisia 2018.
K. Kruse, J. Meichsner, C. Seifert Subordination for sequentially equicontinuous equibounded $C_0$-semigroups. eingereicht. arXiv-Preprint
E. Frick, D. Dahl, C. Seifert, M. Lindner, C. Schuster Novel Method for Error Estimation in Applications of Polynomial Chaos Expansion to Stochastic Modeling of Multi-Resonant Systems. Electrical Performance of Electronic Packaging and Systems, San Jose, CA, USA (2018).
C. Seifert, H. Vogt, M. Waurick A note on perturbations of C0-semigroups. Submitted. arXiv-Preprint, 2018.
D. Mugnolo, D. Noja, C. Seifert Airy-type evolution equations on star graphs. Analysis & PDE 11 (7), 1625-1652, 2018. arXiv-Preprint, Journal
D. Dahl, Ö. F. Yildiz, E. Frick, C. Seifert, M. Lindner, C. Schuster Feasibility of Uncertainty Quantification for Power Distribution Network Modeling Using PCE and a Contour Integral Method. 2018 Joint IEEE International Symposium on Electromagnetic Compatibility & Asia-Pacific Symposium on Electromagnetic Compatibility (2018 Joint IEEE EMC & APEMC), Singapore
C. Seifert The linearised Korteweg-de-Vries equation on general metric graphs. In: The Diversity and Beauty of Applied Operator Theory,
Operator Theory: Advances and Applications 268, 449-458, 2018. arXiv-Preprint, Journal
M.S. Glessmer, C. Seifert E-Assessments to increase the perceived importance of Mathematics in the introductory phase of Engineering Education via bridging tasks. Proceedings of the 45th SEFI Annual Conference 2017, 1549-1556, 2017.
J. Rohleder, C. Seifert Absolutely continuous spectrum for Laplacians on radial metric trees and periodicity. Integr. Equ. Oper. Theory 89(3), 439-453 (2017). arXiv-Preprint, Journal
K. Kruse, L. Dostal, M.S. Glessmer, N. Konchakova, C. Seifert Conception of online e-assessment exercises for math courses with elements from mechanical engineering. In Kammasch, G., Klaffke, H., Knutzen, S. (Eds.): Tagungsband der 11. Ingenieurpädagogischen Regionaltagung, Hamburg, 232-236, 2017.
E. Frick, J. Preibisch, C. Seifert, M. Lindner, C. Schuster Variability Analysis of Via Crosstalk using Polynomial Chaos Expansion. 2017 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO), 317-319, 2017
S. Beckus, D. Lenz, M. Lindner, C. Seifert On the spectrum of operator families on discrete groups over minimal dynamical systems. Math. Z. 287, 993-1007 (2017). Journal
M.S. Glessmer, C. Seifert, L. Dostal, N. Konchakova, K. Kruse Individualisierung von Großveranstaltungen. Oder: Wie man Ingenieurstudierenden die Mathematik schmackhaft macht. Tagungsband zum Hanse-Kolloquium 2015, wtm-Verlag, 64-75, 2016.
M.S. Glessmer, T. Lüth, C. Seifert Ein Entscheidungsbaum als Werkzeug für die Qualitätssicherung von Fragen. Tagungsband zum Hanse-Kolloquium 2015, wtm-Verlag, 51-63, 2016.
C. Seifert On eigenvalue bounds for a general class of Sturm-Liouville operators . Math Phys Anal Geom 19: 25, 18pp (2016). arXiv-Preprint
K. Kruse, L. Dostal, M.S. Glessmer, N. Konchakova, C. Seifert Providing opportunities for individual practice and assessment in a large undergraduate mathematics course. Proceedings of the Sixth International Symposium of Engineering Education, 13-20, 2016.
M.S. Glessmer, T. Lüth, C. Seifert Using a modification of Bloom's taxonomy to design multiple-choice questions to practice different kinds of knowledge and specific cognitive processes. Proceedings of the Sixth International Symposium of Engineering Education, 326-333, 2016.
S. Beckus, D. Lenz, M. Lindner, C. Seifert Note on spectra of non-selfadjoint operators over dynamical systems. Proc. Edinb. Math. Soc. 61 (2), 371-386 (2018). arXiv-Preprint, Journal
C. Seifert, M.Waurick Perturbations of positive semigroups on $L_p$-spaces. Positivity, June 2016, Volume 20, Issue 2, 467-481. Journal
U. Freiberg, C. Seifert Dirichlet forms for singular diffusion in higher dimensions. Journal of Evolution Equations: Volume 15, Issue 4 (2015), Page 869-878. Journal
C. Seifert Constancy of spectra of equivariant (non-selfadjoint) operators over minimal dynamical systems. Proc. Appl. Math. Mech. 15, 697-698 (2015). Journal
C. Seifert Project-Based Learning und Constructive Alignment in Numerik gewöhnlicher Differentialgleichungen Wismarer Frege-Reihe, 02/2015, Teil 1, 45-50.
C. Seifert, D. Wingert On the perturbation of positive semigroups. Semigroup Forum: Volume 91, Issue 2 (2015), Page 495-501. arXiv-Preprint
C. Schubert, C. Seifert, J. Voigt, M. Waurick Boundary systems and (skew-)self-adjoint operators on infinite metric graphs. Math. Nachr. 288, No. 14–15, 1776–1785 (2015). arXiv-Preprint, Journal
C. Seifert Almost sure purely singular continuous spectrum for quasicrystal models. Proceedings of the QMath12 Conference, World Scientific Publishing (2015), 349–354. Journal
C. Seifert Kernel estimates for perturbations of positive semigroups. Proc. Appl. Math. Mech. 14, 1007–1008 (2014). Journal
D. Lenz, C. Seifert, P. Stollmann Zero measure Cantor spectra for continuum one-dimensional quasicrystals. J. Differential Equations, 256 (6) (2014), 1905–1926.arXiv-Preprint, Journal
C. Seifert, H. Vogt A weak Gordon type condition for absence of eigenvalues of one-dimensional Schrödinger operators. Integr. Equ. Oper. Theory 78(3) (2014), 383–405. arXiv-Preprint, Journal
P. Exner, C. Seifert, P. Stollmann Absence of absolutely continuous spectrum for the Kirchhoff Laplacian on radial trees. Ann. Henri Poincaré, 15(6) (2014), 1109–1121. arXiv-Preprint, Journal
C. Seifert, H. Vogt An improved criterion for absence of eigenvalues of one-dimensional Schrödinger operators. Proc. Appl. Math. Mech., 13 (2013), 519–520. Journal
F. Pogorzelski, F. Schwarzenberger, C. Seifert Uniform existence of the integrated density of states on metric Cayley graphs. Lett. Math. Phys., 103 (9) (2013), 1009–1028. Journal
C. Seifert Regularity of the Lyapunov exponent I. Oberwolfach Reports, 9(2) (2012), 1051–1053.
C. Seifert, J. Voigt Dirichlet forms for singular diffusion on graphs. Oper. Matrices, 5 (2011), no. 4, 723–34. Journal
C. Seifert Gordon type theorem for measure perturbation. Electron. J. Diff. Eqns., 111 (2011), 1–9. pdf

Preprints

H. BelHadjAli, A. BenAmor, C. Seifert, A. Thabet On the construction and convergence of traces of forms. submitted. arXiv-Preprint
E. Frick, D. Dahl, C. Seifert, H.-D. Brüns, M. Lindner, C. Schuster Applicability of Polynomial Chaos Expansion near Poles of Resonant Electric Systems. submitted.
J. Meichsner, C. Seifert Fractional powers of non-negative operators in Banach spaces via the Dirichlet-to-Neumann operator. submitted. arXiv-Preprint
R. Wagner, C. Seifert, T. Blecker Forecasting Lifetime Spare Parts Demand after End of Production.