Project description
New methods to investigate stability and testability
In algebra and group theory, stability is a general name for questions such as: "Is every 'almost solution' a small deformation of an 'exact solution'?" Group stability has recently been discovered as a path to solving some longstanding group theory problems on the sofic or hyperlinear nature of groups. In computer science, property testing studies the possibility of algorithms that can check a property while reading only a small amount of information. The question arises whether there are good locally testable codes. The EU-funded TeStability project aims to employ a unified approach in its study of these group theoretic and code problems. It will develop further methods to investigate stability and testability and will ultimately seek answers to the questions in these areas.
Objective
"Stability in algebra in general and in group theory, in particular, is a general name for questions of the following type: Is every ""almost solution"" a
small deformation of an ""exact solution""? E.g. (a) Are two unitary matrices which almost commute small deformations of matrices that do commute? or
(b) Is every ""almost homomorphism"" from a group D to topological group G, a small deformation of a true homomorphism? So (a) is a special case of
(b), with D = Z x Z and G = Un(C).
In recent years, it has been discovered that ""Group Stability"" can be the path to the solution of some longstanding problems in group theory such as: Are all groups sofic? hyperlinear? (Two well known problems of Gromov and Connes, respectively).
In computer science, property testing is an area which studies the possibility of having (random) algorithms that can check a property while reading
only a small amount of the information. A major problem here is: Are there good locally testable codes? Namely, error correcting codes for which one
can decide with a high degree of certainty that a vector is in the code, while reading only a small number of its bits.
The current project will look at these group theoretic and codes problems from a unified point of view. Some partial works show that they are related
to high dimensional expanders, Ramanujan complexes and to lattices in p-adic simple groups and their actions on the associated buildings. We plan
to develop further methods to study stability and testability and eventually also to attack the holy grail problems of these areas."
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.
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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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H2020-EU.1.1. - EXCELLENT SCIENCE - 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.
ERC-ADG - Advanced Grant
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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-2019-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.
7610001 Rehovot
Israel
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