Objective
Hyperbolicity pervades modern mathematics. It is the dominant type of geometry both in low-dimensional topology and group theory, and in such regimes it is a well-understood concept. Such a comprehensive understanding, however, does not extend to higher dimensions and other higher manifestations of hyperbolicity, and this proposal will attempt to change that by focusing on fibring, volume, isoperimetric inequalities, and the Atiyah conjecture.
One of the most pressing problems that geometric topology faces today is to devise a way of adapting Thurston's philosophy to high dimensions. In particular, it is paramount that we answer the question of whether all hyperbolic manifolds in odd dimensions virtually fibre over the circle. One of the main goals of this proposal is to prove this conjecture for manifolds with cubical fundamental groups, a crucial and rich class, and to introduce an original, robust, and flexible method of producing positive examples.
Much of the study of hyperbolic three-dimensional manifolds revolves around the concept of their volume. I will advance a natural notion of volume that covers all hyperbolic groups, whether of geometric provenance or not. This will consolidate the field, and will vastly extend the range of currently existing tools.
Homologically, hyperbolicity manifests itself as a linear isoperimetric inequality in dimension one. I plan to shed light on the deeply mysterious meaning of such an inequality in higher dimensions, weaving together multiple recent advances like theorems of Kleiner--Lang and my work with Kropholler and Nowak into a single fruitful thread.
The three most important classical open questions about hyperbolic groups are residual finiteness, soficity, and the Atiyah conjecture. I intend to prove the last one using a fundamentally new approach. In the process, fresh insights into the structure of approximate subgroups will be gained that will open new avenues of inquiry into the problem of soficity.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences mathematics pure mathematics topology
- natural sciences mathematics pure mathematics geometry
- humanities philosophy, ethics and religion philosophy
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.1 - European Research Council (ERC)
MAIN PROGRAMME
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Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-ERC - HORIZON ERC Grants
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) ERC-2024-COG
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
OX1 2JD Oxford
United Kingdom
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.