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Fakultät für Mathematik
Anschrift
Thea-Leymann-Str. 9
45127 Essen
45127 Essen
Raum
WSC-W-3.21
Telefon
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Funktionen
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Professor/in, Mathematik / Campus Essen
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Dekan, Dekanat Fakultät für Mathematik
Aktuelle Veranstaltungen
Vergangene Veranstaltungen (max. 10)
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WiSe 2024
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SoSe 2024
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WiSe 2023
Die folgenden Publikationen sind in der Online-Universitätsbibliographie der Universität Duisburg-Essen verzeichnet. Weitere Informationen finden Sie gegebenenfalls auch auf den persönlichen Webseiten der Person.
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Selection for altruistic defense in structured populationsIn: Theoretical Population Biology, Jg. 161, 2025, S. 13 – 24DOI (Open Access)
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Local Lipschitz Continuity in the Initial Value and Strong Completeness for Nonlinear Stochastic Differential EquationsIn: Memoirs of the American Mathematical Society, Jg. 296, 2024, Nr. 1481, S. 1 – 90DOI, Online Volltext (Open Access)
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On the Itô-Alekseev-Gröbner formula for stochastic differential equationsIn: Annales de l'Institut Henri Poincaré (B): Probability and Statistics, Jg. 60, 2024, Nr. 2, S. 904 – 922DOI, Online Volltext (Open Access)
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An overview on deep learning-based approximation methods for partial differential equationsIn: Discrete and Continuous Dynamical Systems: Series B (DCDS-B), Jg. 28, 2023, Nr. 6, S. 3697 – 3746DOI, Online Volltext (Open Access)
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Overcoming the curse of dimensionality in the numerical approximation of backward stochastic differential equationsIn: Journal of Numerical Mathematics, Jg. 31, 2023, Nr. 1, S. 1 – 28DOI, Online Volltext (Open Access)
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Costly defense traits in structured populationsIn: ALEA: Latin American Journal of Probability and Mathematical Statistics, Jg. 19, 2022, Nr. 2, S. 1697 – 1752DOI (Open Access)
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Multilevel Picard approximations for McKean-Vlasov stochastic differential equationsIn: Journal of Mathematical Analysis and Applications, Jg. 507, 2022, Nr. 1, 125761DOI, Online Volltext (Open Access)
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Multilevel Picard approximations of high-dimensional semilinear partial differential equations with locally monotone coefficient functionsIn: Applied Numerical Mathematics, Jg. 181, 2022, S. 151 – 175DOI, Online Volltext (Open Access)
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On the speed of convergence of Picard iterations of backward stochastic differential equationsIn: Probability, Uncertainty and Quantitative Risk, Jg. 7, 2022, Nr. 2, S. 133 – 150DOI, Online Volltext (Open Access)
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Overcoming the Curse of Dimensionality in the Numerical Approximation of Parabolic Partial Differential Equations with Gradient-Dependent NonlinearitiesIn: Foundations of Computational Mathematics, Jg. 22, 2022, Nr. 4, S. 905 – 966DOI (Open Access)
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Strong convergence rate of Euler-Maruyama approximations in temporal-spatial Hölder-normsIn: Journal of Computational and Applied Mathematics, Jg. 413, 2022, 114391DOI, Online Volltext (Open Access)
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A stochastic Gronwall inequality and applications to moments, strong completeness, strong local Lipschitz continuity, and perturbationsIn: Annales de l'Institut Henri Poincaré (B): Probability and Statistics, Jg. 57, 2021, Nr. 2, S. 603 – 626DOI, Online Volltext (Open Access)
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Convergence in Hölder norms with applications to Monte Carlo methods in infinite dimensionsIn: IMA Journal of Numerical Analysis, Jg. 41, 2021, Nr. 1, S. 493 – 548DOI, Online Volltext (Open Access)
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Differentiability of semigroups of stochastic differential equations with Hölder-continuous diffusion coefficientsIn: ALEA: Latin American Journal of Probability and Mathematical Statistics, Jg. 18, 2021, Nr. 1, S. 309 – 324DOI (Open Access)
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Multilevel Picard iterations for solving smooth semilinear parabolic heat equationsIn: Partial Differential Equations and Applications, Jg. 2, 2021, Nr. 6, 80DOI (Open Access)
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On existence and uniqueness properties for solutions of stochastic fixed point equationsIn: Discrete and Continuous Dynamical Systems: Series B (DCDS-B), Jg. 26, 2021, Nr. 9, S. 4927 – 4962DOI, Online Volltext (Open Access)
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On nonlinear Feynman-Kac formulas for viscosity solutions of semilinear parabolic partial differential equationsIn: Stochastics and Dynamics (SD), Jg. 21, 2021, Nr. 08, 2150048DOI, Online Volltext (Open Access)
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A proof that rectified deep neural networks overcome the curse of dimensionality in the numerical approximation of semilinear heat equationsIn: Partial Differential Equations and Applications, Jg. 1, 2020, Nr. 2, 10DOI, Online Volltext (Open Access)
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Multilevel picard approximations of high-dimensional semilinear parabolic differential equations with gradient-dependent nonlinearitiesIn: SIAM Journal on Numerical Analysis, Jg. 58, 2020, Nr. 2, S. 929 – 961DOI, Online Volltext (Open Access)
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Numerical Simulations for Full History Recursive Multilevel Picard Approximations for Systems of High-Dimensional Partial Differential EquationsIn: Communications in Computational Physics (CiCP), Jg. 28, 2020, Nr. 5, S. 2109 – 2138DOI, Online Volltext (Open Access)
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On a perturbation theory and on strong convergence rates for stochastic ordinary and partial differential equations with nonglobally monotone coefficientsIn: The Annals of Probability, Jg. 48, 2020, Nr. 1, S. 53 – 93DOI, Online Volltext (Open Access)
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Overcoming the curse of dimensionality in the approximative pricing of financial derivatives with default risksIn: Electronic Journal of Probability, Jg. 25, 2020, S. 101DOI (Open Access)
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Overcoming the curse of dimensionality in the numerical approximation of Allen-Cahn partial differential equations via truncated full-history recursive multilevel Picard approximationsIn: Journal of Numerical Mathematics, Jg. 28, 2020, Nr. 4, S. 197 – 222DOI, Online Volltext (Open Access)
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Overcoming the curse of dimensionality in the numerical approximation of semilinear parabolic partial differential equations : Overcoming the curse of dimensionalityIn: Proceedings of the Royal Society of London, Series A: Mathematical, Physical and Engineering Sciences, Jg. 476, 2020, Nr. 2244, S. 20200072DOI, Online Volltext (Open Access)
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Propagation of chaos and the many-demes limit for weakly interacting diffusions in the sparse regimeIn: The Annals of Applied Probability, Jg. 30, 2020, Nr. 5, S. 2311 – 2354DOI, Online Volltext (Open Access)
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On Multilevel Picard Numerical Approximations for High-Dimensional Nonlinear Parabolic Partial Differential Equations and High-Dimensional Nonlinear Backward Stochastic Differential EquationsIn: Journal of Scientific Computing, Jg. 79, 2019, Nr. 3, S. 1534 – 1571DOI, Online Volltext (Open Access)
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Zufällige Strukturen in der Evolutionsbiologie : Ohne Zufall keine EvolutionIn: Unikate: Berichte aus Forschung und Lehre, 2019, Nr. 53: Mathematik - Herausforderung des Nichtlinearen, S. 79 – 88DOI, Online Volltext (Open Access)
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Exponential integrability properties of numerical approximation processes for nonlinear stochastic differential equationsIn: Mathematics of Computation (MCOM), Jg. 87, 2018, Nr. 311, S. 1353 – 1413DOI, Online Volltext (Open Access)
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Strong convergence of full-discrete nonlinearity-truncated accelerated exponential Euler-type approximations for stochastic Kuramoto-Sivashinsky equationsIn: Communications in Mathematical Sciences, Jg. 16, 2018, Nr. 6, S. 1489 – 1529DOI, Online Volltext (Open Access)
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Loss of regularity for Kolmogorov equationsIn: The Annals of Probability, Jg. 43, 2015, Nr. 2, S. 468 – 527DOI (Open Access)
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Numerical approximations of stochastic differential equations with non-globally Lipschitz continuous coefficientsIn: Memoirs of the American Mathematical Society, Jg. 236, 2015, Nr. 1112
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Divergence of the multilevel Monte Carlo Euler method for nonlinear stochastic differential equationsIn: The Annals of Applied Probability, Jg. 23, 2013, Nr. 5, S. 1913 – 1966
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Ecological and genetic effects of introduced species on their native competitorsIn: Theoretical Population Biology, Jg. 84, 2013, S. 25 – 35
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Interacting diffusions and trees of excursions : convergence and comparisonIn: Electronic Journal of Probability, Jg. 17, 2012, Nr. paper no. 71
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Norovirus GII.4 and GII.7 capsid sequences undergo positive selection in chronically infected patientsIn: Infection, Genetics and Evolution, Jg. 12, 2012, Nr. 2, S. 461 – 466
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Strong convergence of an explicit numerical method for SDEs with nonglobally Lipschitz continuous coefficientsIn: The Annals of Applied Probability, Jg. 22, 2012, Nr. 4, S. 1611 – 1641
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Convergence of the Stochastic Euler Scheme for Locally Lipschitz CoefficientsIn: Foundations of Computational Mathematics, Jg. 11, 2011, Nr. 6, S. 657 – 706
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Strong and weak divergence in finite time of Euler's method for stochastic differential equations with non-globally Lipschitz continuous coefficientsIn: Proceedings of the Royal Society of London, Series A: Mathematical, Physical and Engineering Sciences, Jg. 467, 2011, Nr. 2130, S. 1563 – 1576
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Supercritical branching diffusions in random environmentIn: Electronic Communications in Probability, Jg. 16, 2011, Nr. paper no. 69, S. 781 – 791
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Time reversal of some stationary jump diffusion processes from population geneticsIn: Advances in Applied Probability, Jg. 42, 2010, Nr. 4, S. 1147 – 1171
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Survival, Extinction and Ergodicity in a Spatially Continuous Population ModelIn: Markov Processes and Related Fields, Jg. 15, 2009, Nr. 3, S. 265 – 288
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The Virgin Island ModelIn: Electronic journal of probability : EJP, Jg. 14, 2009, Nr. paper no. 39, S. 1117 – 1161
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Ergodic Behavior of Locally Regulated Branching PopulationsIn: The annals of applied probability, Jg. 17, 2007, Nr. 2, S. 474 – 501
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Graphical representation of some duality relations in stochastic population modelsIn: Electronic communications in probability : ECP, Jg. 12, 2007, Nr. paper no. 21, S. 206 – 220
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Stochastic averaging for multiscale Markov processes with an application to branching random walk in random environment2015Online Volltext (Open Access)
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Strong convergence rates and temporal regularity for Cox-Ingersoll-Ross processes and Bessel processes with accessible boundaries2014Online Volltext (Open Access)