Objective
We propose a three-way dictionary between representation theory of complex semisimple Lie groups,
equivariant topology of affine Schubert varieties and mirror symmetry for Langlands dual Hitchin systems
via the language of fixed point schemes. This unified framework will yield new insights and advances
within these fields, with applications extending to other areas of mathematics and quantum physics.
We introduce big algebras, which are commutative algebras attached to representations of complex
semisimple Lie groups. We view them as commutative avatars of the representation because they bring
together a wealth of sophisticated information, including a novel ring structure on multiplicity spaces,
the weight diagram and crystal structure.
We geometrize the study of equivariant cohomologies of various varieties with group action by
representing them as rings of functions of certain fixed point schemes of the group action. Adopting this
perspective, we propose novel scheme-theoretic counterparts to several fundamental constructions in
algebraic topology, such as equivariant integration, Hodge and Lefschetz theory. For affine Schubert
varieties, these counterparts offer an alternative topological approach to understanding big algebras.
Due to our central observation that the Hitchin integrable system on various Lagrangians can be modelled
by the spectrum of equivariant cohomology and big algebras, we propose a host of computational tests
of conjectured mirror branes of Kapustin–Witten in Langlands dual Hitchin systems.
We explore several applications, including polynomial relationships between quantum numbers in baryon
multiplets; a big algebra approach to Kashiwara’s conjecture on affine crystals; compatibility with Langlands
duality, endoscopy, transfer and character formulas in the relative Langlands program; geometrization of
various q = −1 phenomena and cyclic sieving in algebraic combinatorics.
Fields of science (EuroSciVoc)
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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.
This project's classification has been validated by the project's team.
- natural sciences mathematics applied mathematics mathematical physics
- natural sciences mathematics pure mathematics topology
- natural sciences mathematics pure mathematics algebra
- natural sciences mathematics pure mathematics geometry
- natural sciences mathematics pure mathematics discrete mathematics combinatorics
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)
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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
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) ERC-2024-ADG
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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.
3400 KLOSTERNEUBURG
Austria
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.