Logo TU Ilmenau

Foto des Ansprechpartners

Prof. Dr. rer. nat. habil. Matthias Kriesell


Telefon +49 3677 69-3633

E-Mail senden

Ihre Position



Veröffentlichungen am Institut für Mathematik seit 1990

Anzahl der Treffer: 1185
Erstellt: Sun, 12 Jul 2020 09:57:14 +0200 in 0.0385 sec

Semper, Sebastian; Römer, Florian; Hotz, Thomas; Del Galdo, Giovanni;
Sparsity order estimation from a single compressed observation vector. - In: IEEE transactions on signal processing : SP ; a publication of the IEEE Signal Processing Society.. - New York, NY : IEEE, Bd. 66 (2018), 15, S. 3958-3971
Hildenbrandt, Regina;
The k-server problem with parallel requests and the corresponding generalized paging problem. - In: Operations research proceedings 2017. - Cham, Switzerland : Springer, (2018), S. 205-211

In the present paper we give a frst summary of "competitive" algorithms for solving the "k-server problems with parallel requests" or the generalized paging problem.

Giribet, Juan; Langer, Matthias; Leben, Leslie; Maestripieri, Alejandra; Martínez Pería, Francisco; Trunk, Carsten;
Spectrum of J-frame operators. - In: Opuscula mathematica : semiannual.. - Kraków : AGH Univ. of Science and Technology Press, ISSN 2300-6919, Bd. 38 (2018), 5, S. 623-649
Peterin, Iztok; Schreyer, Jens; Fecková Škrabuláková, Erika; Taranenko, Andrej;
A note on the Thue chromatic number of lexicographic products of graphs. - In: Discussiones mathematicae. Graph theory / Uniwersytet Zielonogórski / Wydział Matematyki, Informatyki i Ekonometrii. - Warsaw : De Gruyter Open, 1995- ; ZDB-ID: 2568813-3, ISSN 2083-5892, Bd. 38 (2018), 3, S. 635-643
Leben, Leslie; Martínez Pería, Francisco; Philipp, Friedrich; Trunk, Carsten; Winkler, Henrik;
Finite rank perturbations of linear relations and singular matrix pencils. - Ilmenau : Technische Universität Ilmenau, Institut für Mathematik, 2018. - 1 Online-Ressource (25 Seiten). . - (Preprint. - M18,08)

We elaborate on the deviation of the Jordan structures of two linear relations that are finite-dimensional perturbations of each other. We compare the number of Jordan chains of length at least n corresponding to some eigenvalue to each other. In the operator case, it was recently proved that the difference of these numbers is independent of n and is at most the defect between the operators. One of the main results of this paper shows that in the case of linear relations this number has to be multiplied by n+1 and that this bound is sharp. The reason for this behaviour is the existence of singular chains. We apply our results to one-dimensional perturbations of singular and regular matrix pencils. This is done by representing matrix pencils via linear relations. This technique allows for both proving known results for regular pencils as well as new results for singular ones.
Gernandt, Hannes; Trunk, Carsten;
Locally finite extensions and Gesztesy-Šeba realizations for the Dirac operator on a metric graph. - Ilmenau : Technische Universität Ilmenau, Institut für Mathematik, 2018. - 1 Online-Ressource (27 Seiten). . - (Preprint. - M18,07)

We study extensions of direct sums of symmetric operators S=\oplus S_n where n run through the natural numbers. In general there is no natural boundary triplet associated even if there is one for every S_n^*. We consider a subclass of extensions of S which can be described in terms of the boundary triplets of S_n^* and investigate the self-adjointness, the semi-boundedness from below and the discreteness of the spectrum. Sufficient conditions for these properties are obtained from recent results on weighted discrete Laplacians. The results are applied to Dirac operators on metric graphs with point interactions at the vertices. In particular, we allow graphs with arbitrarily small edge length.
Sprodowski, Tobias; Mehrez, Mohamed W.; Worthmann, Karl; Mann, George K. I.; Gosine, Raymond G.; Sagawa, Juliana K.; Pannek, Jürgen;
Differential communication with distributed MPC based on occupancy grid. - In: Information sciences : an international journal.. - New York, NY : Elsevier Science Inc., ISSN 0020-0255, Bd. 453 (2018), S. 426-441
Flaßkamp, Kathrin; Worthmann, Karl; Greiner-Petter, Christoph; Büskens, Christof; Sattel, Thomas;
An optimal control problem for stereotactic neurosurgery. - In: MATHMOD 2018 extended abstract volume : extended abstracts of 9th Vienna Conference on Mathematical Modelling, Vienna, Austria, February 21-23, 2018.. - Vienna : ARGESIM Publisher, ISBN 978-3-901608-91-9, (2018), S. 67-68
Ilchmann, Achim;
Das bürgerliche Stadthaus im Rokoko. - Tübingen : Wasmuth, 2018. - 255 Seiten. ISBN 3-8030-0833-6

Schmid, Andreas; Schmidt, Jens M.;
Computing 2-walks in polynomial time. - In: ACM transactions on algorithms : TALG.. - New York, NY, ISSN 1549-6333, Bd. 14 (2018), 2, Article No. 22, insges. 18 S.
- An extended abstract of this article was published in STACS 2015