Steffen Kionke
Raum: 1.008 CS 20.30 Tel.: +49 721 608-43263 steffen kionkeVet1∂kit edu	Karlsruher Institut für Technologie MATH \| IAG \| AG Topologie Englerstr. 2 \| Mathebau (20.30) 76131 Karlsruhe

Aktuelles

Auch in diesem Semester gibt es wieder das 15-Minuten-Seminar Freitags im Topologischen Raum. Hier ist der aktuelle Plan.

Forschungsinteressen

Preprints
Titel	Koautoren	Jahr
Equivariant Benjamini-Schramm Convergence of Simplicial Complexes and l2-multiplicities	M.Schrödl-Baumann	2019
Profinite invariants of arithmetic groups	H.Kammeyer, J.Raimbault, R.Sauer	2019
On p-adic limits of topological invariants		2018

Artikel
Titel	Koautoren	Quelle
Constructing the completion of a field using quasimorphisms		to appear in p-Adic Numbers Ultrametric Anal. Appl.
Groups acting on rooted trees and their representations on the boundary		J. Algebra 528 (2019), 260-284
Zeta functions associated to admissible representations of compact p-adic Lie groups	B. Klopsch	erscheint in Trans. Amer. Math. Soc.
Characters, L2-Betti numbers and an equivariant approximation theorem		Math. Ann. (2018) 371, 405--444
Positively finitely related profinite groups	M. Vannacci	Israel J. Math. 225 (2018), 743-770.
A geometric approach to divergent points of higher dimensional Collatz mappings		Monatsh. Math. 182 (2017), 851--863
On geometric aspects of diffuse groups	J. Raimbault	Doc. Math. 21 (2016), 873--915
On equivariant Euler-Poincaré characteristic in sheaf cohomology	J. Rohlfs	Manuscripta Math. 149(3) (2016), 283--295
On the growth of the first Betti number of arithmetic hyperbolic 3-manifolds	J. Schwermer	Groups Geom. Dyn. 9 (2015), 531--565
On lower bounds for cohomology growth in p-adic analytic towers		Math. Z. 277 (2014), 709--723
Lefschetz numbers of symplectic involutions on arithmetic groups		Pacific J. Math 271-2 (2014), 369--414

Abschlussarbeiten
Titel	Ort/Jahr	Betreuer
Lefschetz numbers of involutions on arithmetic subgroups of inner forms of the special linear group	Universität Wien 2012	J. Schwermer

Vorlesungen
Titel	Typ	Semester
Introduction to arithmetic groups and their cohomology	Vorlesung	WS 2018/19
Algebra	Vorlesung (V)	WS 17/18

Minikurse
Titel	Tagung	Tagungsort	Datum
Introduction to representation zeta functions	Zeta functions of groups and dynamical systems	Heinrich-Heine-Universität Düsseldorf	09 / 2018
Introduction to arithmetic groups and their cohomology	L^2-invariants and their analogues in positive characteristic	ICMAT, Madrid	03 / 2018
The growth of Betti numbers and approximation theorems	Borel Seminar 2017	Les Diablerets, Schweiz	08 / 2017

Während meiner Zeit an der Heinrich-Heine-Universität Düsseldorf habe ich folgende Lehrveranstaltungen betreut.

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