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Claudius Zibrowius
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I am a professor in low-dimensional topology at the mathematics department of Ruhr-University Bochum, Germany.
Ich bin Professor für niedrig-dimensionale Topologie an der mathematischen Fakultät der Ruhr-Universität Bochum.
I study local versions of Heegaard Floer theories
and categorifications of quantum invariants, in particular bordered
(sutured) Heegaard Floer theory and Bar-Natan's generalizations of
Khovanov homology to tangles. An important tool in my work which
binds these two types of invariants together is their relationship
with Fukaya categories of surfaces.
Ich studiere lokale
Varianten von Heegaard-Floer-Theorien sowie Kategorifizierungen von
Quanten-Invarianten, insbesondere bordered (sutured)
Heegaard-Floer-Homologie und Bar-Natan's Verallgemeinerungen von
Khovanov-Homologie für Tangles. Ein wichtiges Element, das
diese beiden Arten von Invarianten zusammenführt, ist ihre
Verbindung zu Fukaya-Kategorien von Flächen.
My work is supported by an individual research grant (project number 505125645) from the German Research Foundation (DFG) and a Starting Grant (project number 101115822) from the European Research Council (ERC).
I currently have a postdoc, Dr. Subhankar Dey.
Chen Zhang, currently PhD candidate at MSU, will join my group as a postdoc in September 2024.
I expect to hire more postdocs and PhD students soon. Open positions will be advertised here.
Meine Arbeit wird von der Deutschen Forschungsgemeinschaft (DFG) im Rahmen der Einzelförderung (Projektnummer 505125645) sowie einem Starting Grant (Projektnummer 101115822) des Europäischen Forschungsrats (ERC) unterstützt.
Ich betreue momentan einen Postdoktoranden, Dr. Subhankar Dey.
Im September wird Chen Zhang, z.Z. Doktorand an der MSU, hinzukommen.
Ich gehe davon aus, in naher Zukunft weitere Postdoktoranden und Doktoranden beschäftigen zu können.
Offene Stellen werden hier an dieser Stelle bekannt gegeben.
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Curriculum Vitæ
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claudius.zibrowius@DELETEME@rub.de
(
PGP)
claudius.zibrowius@DELETEME@posteo.net
(
PGP)
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Office IB 3/117
Faculty of Mathematics
Universitätsstraße 150
Building IB, Postbox 23
44801 Bochum
Germany
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If you can't say it simply and clearly, keep quiet, and keep working on it till you can.
Karl Popper, 1970, in Wider die großen Worte
Wer's nicht einfach und klar sagen kann, der soll schweigen und weiterarbeiten, bis er's klar sagen kann.
Karl Popper, 1970, in Wider die großen Worte
Preprints
Preprints
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Rasmussen invariants of Whitehead doubles and other satellites
arXiv:2208.13612, 48 pages, joint with
Lukas Lewark
A supplementary table of invariants can be found
here.
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Khovanov multicurves are linear
arXiv:2202.01460, 41 pages, joint with
Artem
Kotelskiy and
Liam
Watson
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Khovanov invariants via Fukaya categories: the tangle
invariants agree
arXiv:2004.01619, 14 pages, joint with
Artem
Kotelskiy and
Liam
Watson, submitted
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Immersed curves in Khovanov homology
arXiv:1910.14584, 95 pages, joint with
Artem
Kotelskiy and
Liam
Watson, submitted
I gave a mini-course on selected material from this paper at
the 2019 ISM discovery school
Current Progress in Low Dimensions in
Montréal. My lecture notes are available
here along with
exercises.
Publications in major scientific journals
Veröffentlichungen in bedeutenden wissenschaftlichen Journalen
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Thin links and Conway spheres
joint with
Artem
Kotelskiy and
Liam
Watson
arXiv:2105.06308, 50 pages,
to appear in Compositio Mathematica
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Cosmetic operations and Khovanov multicurves
joint with
Artem
Kotelskiy,
Tye
Lidman,
Allison Moore,
and
Liam
Watson
Mathematische Annalen (2023), pp. 28
(arXiv:2109.14049 |
doi:10.1007/s00208-023-02697-5)
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A mnemonic for the Lipshitz-Ozsváth-Thurston correspondence
joint with
Artem
Kotelskiy and
Liam
Watson
Algebraic & Geometric Topology 23.6 (2023), 2519–2543
(arXiv:2005.02792 |
doi:10.2140/agt.2023.23.2519)
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L-space knots have no essential Conway spheres
joint with
Tye
Lidman and
Allison Moore
Geometry & Topology 26.5 (2022), 2065–2102
(arXiv:2006.03521 |
doi:10.2140/gt.2022.26.2065)
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On symmetries of peculiar modules; or, \(\delta\)-graded link
Floer homology is mutation invariant
Journal of the European Mathematical Society 25.8 (2023), 2949–3006
(arXiv:1909.04267 |
doi:10.4171/JEMS/1201)
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Peculiar modules for 4-ended tangles
Journal of Topology 13.1 (2020), 77–158
(arXiv:1712.05050 |
doi:10.1112/topo.12120)
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Kauffman states and Heegaard diagrams for tangles
Algebraic & Geometric Topology 19.5 (2019), 2233–2282
(arXiv:1601.04915 |
doi:10.2140/agt.2019.19.2233)
Publications in conference proceedings and in other peer-reviewed scientific journals
Veröffentlichungen in Konferenzbänden oder in anderen peer-reviewten Journalen
Theses
Doktor- und
Masterarbeit
Talks (only those available online)
Vorträge
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(video)
Multicurves of double tangles
The low-dimensional workshop of the research semester Singularities and low dimensional topology at the Erdős Center
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(video)
Classification of multicurve invariants
ICTP conference Frontiers in Geometry and Topology in honour of Tom Mrowka, August 2022
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(video|slides)
Thin links and Conway spheres
The Nearly Carbon Neutral Geometric Topology Conference, June 2021
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(video|slides)
L-space knots have no essential Conway spheres
Simons Center Workshop: Floer homology in low-dimensional topology, January 2021
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(video|slides)
Thin links and Conway spheres
Regensburg low-dimensional geometry and topology seminar, July 2020
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(video|slides)
Khovanov and Heegaard Floer theories through the lens of
immersed curves
Trends in Low-Dimensional Topology, May
2020, joint with Artem Kotelskiy
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(video|slides)
Conway mutation in link Floer, Khovanov and Bar-Natan homology
geometry/topology seminars at Duke, UGA, and Durham,
February/March 2020
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(video)
Categories of curved complexes for marked surfaces
Isaac-Newton-Institut, May 2017
Conference organization
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Algebra and Low-Dimensional Topology,
Berlin, August 2022
minisymposium at the DMV meeting 2022, organized together with Paul Wedrich
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Perspectives on quantum link homology theories,
Regensburg, August 2021
combined SFB student workshop and research conference, organized together with Lukas Lewark
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Topology session of the winter meeting of the Canadian Mathematical Society, Vancouver, December 2018
organized together with Krishanu Sankar
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Perspectives on bordered Heegaard Floer theory, Montréal, May 2018
combined ISM workshop/CIRGET conference, organized together with Liam Watson and Steve Boyer
Computer programs
Computerprogramme
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kht++ (program website|github), a C++ program for computing Khovanov
invariants of links and tangles. 2021.
This program supersedes
KhT.py, a python program that I wrote
with G. Chhina during an undergraduate summer research project.
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BSFH.m, a Mathematica package for computing
Zarev's bordered sutured Floer invariants. 2017–2019.
A manual can be
found in appendix D of my thesis. An updated version which
also handles more than two glueing surfaces
and \(\alpha\)- and \(\beta\)-arcs
simultaneously is available upon request.
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PQM.m, a Mathematica package for computing the invariant \(\operatorname{HFT}\) for Conway tangles. 2018.
A manual can be
found here.
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APT.m, a Mathematica package for computing the decategorified
polynomial tangle invariants \(\nabla_T^s\) from my
thesis. 2017.
A manual can be found in appendix C of my thesis.
All four programs are licensed
under AGPLv3.
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