n-cities-seminar

The n-cities seminar is organized by mathematicians from the Universities of Chemnitz, Dresden, Freiberg and Leipzig (currently Swanhild Bernstein, Ralph Chill, Tatjana Eisner, Peter Stollmann) and is dedicated to the following fields of interest.

fields of interest:

Functional analysis
Analysis of partial differential equations
Complex analysis
Operator theory
Theory of operator semigroups
Probability and ergodic theory

Program of upcoming event

17 January 2020 in Leipzig (MPI)

14:00 - 14:30 Uhr: Uta Freiberg (Chemnitz)
"Dirichlet forms on quantum graphs with vanishing edge lengths"
14:40 - 15:10 Uhr: Sebastian Boldt (Uni Leipzig)
"Scattering Theory of the Dirac operator"
15:35 - 16:05 Uhr: Leonid Chaichenets (Dresden)
"On the global wellposedness of the Klein-Gordon equation for initial data in modulation spaces"
16:15 - 16:45 Uhr: Halit Sevki Aslan (Freiberg)
"Liouville property and discrete Ricci curvature"
16:55 - 17:25 Uhr: María Ángeles García-Ferrero (MPI Leipzig)
"Runge approximation properties for local and non-local operators"

Programme of previous events

26 April 2019 in Freiberg

13:30 - 14:00 Uhr: A. Szkola (Leipzig)
"On the problem of testing composite hypotheses in non-commutative statistical models"
14:05 - 14:35 Uhr: B. Claus (Dresden)
"Nonlinear Dirichlet forms"
15:40 - 16:10 Uhr: D. Lorenz (Freiberg)
"Linear hyperbolic Cauchy problems with low-regular coefficients"
16:15 - 16:45 Uhr: C. Bombach (Chemnitz)
"Unique determination of a rough potential from boundary data"
16:50 - 17:20 Uhr: W. Chen (Freiberg)
"Elastic waves with different damping mechanisms"

2 November 2018 in Leipzig

14:00 - 14:45 Uhr: Lars Perlich (Dresden)
"Dirichlet-to-Robin operators via composition semigroups"
14:45 - 15:30 Uhr: Michael Wutzig (Freiberg)
"Reproducing kernels in harmonic and Clifford analysis"
16:00 - 16:45 Uhr: Jan-Frederik Pietschmann (Chemnitz)
"Some remarks on a cross-diffusion equations with size exclusion"
16:45 - 17:30 Uhr: Florentin Münch (Leipzig)
"Liouville property and discrete Ricci curvature"

29 June 2018 in Dresden

13:45 - 14:30 Uhr: Jan-David Hardtke (Leipzig)
"Octahedral and almost square Banach spaces"
14:30 - 15:15 Uhr: Martin Himmel (Freiberg)
"New classes of means related to the Cauchy functional equations and their properties"
16:00 - 16:45 Uhr: Martin Tautenhahn (Chemnitz)
"Null controllability and control costs for the heat equation in unbounded domains"
16:45 - 17:30 Uhr: Wolfgang Arendt (Ulm)
"Evolution on spaces of continuous functions / Evolution auf Räumen von stetigen Funktionen"

19 January 2018 in Chemnitz

14:00 - 14:45 Uhr: Sebastian Mildner (Dresden)
"Symmetry between the energy of a gradient system and its Lyapunov functions"
14:45 - 15:30 Uhr: Christian Seifert (Hamburg)
"Operators via Boundary Systems"
16:00 - 16:45 Uhr: Tatjana Eisner (Leipzig)
"Wiener‘s lemma along primes"
16:45 - 17:30 Uhr: David Damanik (Houston)
"Localization for the one-dimensional Anderson model via positivity and large deviations for the Lyapunov exponent"

23 June 2017 in Freiberg

14:00 - 1445 Uhr: Therese Mieth (Leipzig)
"Entropy and approximation numbers of Sobolev embeddings"
14:45 - 15:30 Uhr: Christian Rose (Chemnitz)
"Heat kernel estimates based on Ricci curvature integral bounds"
16:00 - 16:45 Uhr: Lena Malinowski (Dresden)
"Operators in pre-Riesz-spaces"
16:45 - 17:30 Uhr: Maximilian Reich (Freiberg)
"Composition in Weighted Modulation Spaces and Applications to
Nonlinear PDEs"

4 November 2016 in Leipzig

13:30 - 14:20 Uhr: Markus Hartlapp (Dresden)
"A quantified version of Ingham's original Tauberian theorem"
15:30 - 16:30 Uhr: Abdelaziz Rhandi (Salerno)
"Functional analytic methods for stochastic differential operators"
16:30 - 17:30 Uhr: Marcel Hansmann (Chemnitz)
"On the distribution of eigenvalues of compactly perturbed operators"

29 April 2016 in Dresden

13:30 - 14:20 Uhr: Mario Helm (Freiberg)
"Numerische Aspekte der Auswertung der Frechet-Ableitung von Matrix-Exponential-Funktionen"
14:30 - 15:20 Uhr: Jürgen Voigt (Dresden)
"Bands in L^p-spaces"
15:50 - 16:40 Uhr: Thomas Kühn (Leipzig)
"Optimal approximation of multivariate periodic functions"
16:50 - 17:40 Uhr: Michela Egidi (Chemnitz)
"Quantitative uncertainty principle on the torus"

30 October 2015 in Chemnitz

14:00 - 14:50 Uhr: Andras Batkai (Wuppertal)
"Approximationen von Evolutionsfamilien"
15:00 - 15:50 Uhr: Oliver Rheinbach (Freiberg)
"Parallele nichtlineare Gebietszerlegungsverfahren in der Strukturmechanik"
16:30 - 17:20 Uhr: Sascha Trostorff (TU Dresden)
"Über eine Klasse maximal monotoner Block-Operator-Matrizen in evolutionären Gleichungen"

6 February 2015 in Leipzig

13:30 - 14:20 Uhr: Swanhild Bernstein (Freiberg) tba
14:30 - 15:20 Uhr: Anke Kalauch (Dresden)
"Ideale und Bänder in prä-Riesz-Räumen"
15:50 - 16:40 Uhr: Dirk Werner (Berlin)
"Banachräume mit der Daugavet-Eigenschaft"
16:50 - 17:40 Uhr: Daniel Potts (Chemnitz)
"High dimensional approximation with trigonometric polynomials"

14 October 2014 in Dresden

13:30 - 14:15 Uhr: Fabian Schwarzenberger (Leipzig)
"The integrated density of states on coloured graphs"
14:30 - 15:15 Uhr: Martin Tautenhahn (Chemnitz)
"Quantitative unique continuation and Wegner estimate for random Schrödinger operators"
16:15- 17:00 Uhr: Yuri Tomilov (Warschau, IMPAN)
"From prime numbers to damped waves"

9 May 2014 in Chemnitz:

13:00 - 13:45 Uhr: Konrad Schmüdgen (Leipzig)
"Schrödingeroperatoren mit unendlich vielen Punktwechselwirkungen"
14:00 - 14:45 Uhr: Thomas Kalmes (Chemnitz)
"Eine Vermutung von Treves und ihre Verallgemeinerung auf Ultradistributionen"
16:00 - 16:45 Uhr: Sebastian Krol (Dresden / Torun)
"Fourier multipliers on weighted L^p spaces"

31 January 2014 in Leipzig:

15:00 - 15:45 Uhr: Peter Stollmann (Chemnitz)
"The Complex Laplacian and its Heat Semigroup"
16:15 - 17:00 Uhr: Marcus Waurick (Dresden)
"Über nicht-autonome, degenerierte Gleichungen"
17:05 - 17:50 Uhr: Felix Pogorzelski (Jena)
"Convergence of discrete geometries and spectral approximation"

(see also here )