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Cut and Paste Methods in Low Dimensional Topology

Cut and Paste Methods in Low Dimensional Topology

Vera Vertesi (ORCID: 0000-0002-7431-9001)
  • Grant DOI 10.55776/P34318
  • Funding program Principal Investigator Projects
  • Status ongoing
  • Start January 1, 2022
  • End December 31, 2025
  • Funding amount € 374,808
  • E-mail

Disciplines

Mathematics (100%)

Keywords

    Low Dimensional Topology, Contact Topology, Open Book Decompositions, Knots, Heegaard Floer homology, Symplectic Topology

Abstract

Topology is a branch of mathematics that studies spaces up to continuous deformation. This means, that topologists consider two spaces the same if one can be deformed into the other by stretching, bending, but no cutting or gluing. So distances and areas are allowed to change during these deformations. For example from a topologists viewpoint all circles, ellipses and even squares are the same (as they have only one hole), but a figure eight is dierent (as it has 2 holes). A dimension of a space is the number of coordinates one needs to describe locations of objects. For example any point on the surface of the Earth may be described by its latitude and longitude. Thus it is 2-dimensional. In the Space however one also needs to keep track of another local coordinate; height. Which means it is 3-dimensional. With a bit of abstraction, one can talk about higher dimensional spaces, the fourth dimension is often represented by time, but in general one does not need to give names to these extra dimensions. Dimension in itself is not enough to describe a space. For example the line and the circle are both one dimensional, but they are topologically dierent; one needs to cut open the circle to make it into a line. Similarly there are several 2-dimensional spaces: the surface of a sphere, a mug, or a mug with two or more handles. Once again, these are all dierent 2-dimensional spaces; one needs to cut to change the number of handles. While we have a complete understanding of 1- and 2-dimensional spaces, and higher dimensional spaces turn out to be easier to work with due to the flexibility we gain in the extra dimensions, 3- and 4-dimensional spaces are the most complicated to study. Low dimensional topology is the branch of mathematics dealing exactly with these spaces in the borderline. It has long been a fertile area for the interaction of many dierent disciplines of mathematics, including dierential geometry, hyperbolic geometry, combinatorics, representation theory, global analysis, classical mechanics, and theoretical physics. This project concentrates on questions in low dimensional topology, that can be settled using cut and paste techniques in various forms. This means, that we cut spaces into elementary pieces that are each easier to study, and derive results for the the original space by gluing them back together. The diculty in these approaches lies in developing structures that are complicated enough to remember how the spaces are built up from the elementary pieces, but are still simple enough to be studied successfully.

Research institution(s)
  • Universität Wien - 100%
International project participants
  • Joan Licata, Australian National University - Australia
  • Roman Golovko, Charles University Prague - Czechia
  • Paolo Ghiggini, Université de Nantes - France
  • Vincent Colin, Université de Nantes - France
  • Chris Wendl, Humboldt-Universität zu Berlin - Germany
  • Kai Cieliebak, Universität Augsburg - Germany
  • Andras Stipsicz, Alfred Renyi Institute of Mathematics - Hungary
  • Viktoria Földvari, Eötvös University - Hungary
  • Doug Lafountain, Western Illinois University - USA
  • Inanc Baykur, University of Massachusetts - USA
  • Akram Alishahi, University of Georgia at Athens - USA
  • John Etnyre, Georgia Institute of Technology - USA
  • Kristen Hendricks, Rutgers University - USA
  • Ina Petkova, Dartmouth College - USA
  • David Gay, University of Georgia - USA
  • Steven Sivek, Imperial College London - United Kingdom
  • Andy Wand, University of Glasgow - United Kingdom

Research Output

  • 1 Citations
  • 2 Publications
Publications
  • 2025
    Title Isolated steady solutions of the 3D Euler equations
    DOI 10.1073/pnas.2414730122
    Type Journal Article
    Author Enciso A
    Journal Proceedings of the National Academy of Sciences
    Link Publication
  • 2024
    Title On spectral simplicity of the Hodge Laplacian and curl operator along paths of metrics
    DOI 10.1090/tran/9221
    Type Journal Article
    Author Kepplinger W
    Journal Transactions of the American Mathematical Society
    Pages 7829-7845
    Link Publication

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