Project description
Factorisation studies extend to the realm of matrix rings
Factorisation revolves around the study of the multiplicative structure of a ring. The theory first appeared in the 1960s, but new striking developments especially in non-commutative frameworks have brought it again to the forefront over the last decade. The theory studies the non-uniqueness of the representation of invertible elements in rings or semigroups as products of generating irreducible elements. However, studies have barely involved matrix rings. Funded by the Marie Skłodowska-Curie Actions programme, the FacT-in-MaRs project plans to study the non-unique phenomena of idempotent matrix factorisations, connecting in an original way two areas of ring theory that have so far remained unrelated.
Objective
The characterization of integral domains R such that every singular matrix over R is a product of idempotent matrices is a classical open problem in ring theory. Its importance lies in the inter-connections with other big unsolved issues: classify integral domains whose general linear groups are generated by the elementary matrices, and those fulfilling weak versions of the Euclidean algorithm. The study of idempotent factorizations in matrix rings has gained increasing attention over the years and all the results have highlighted how the decomposition into idempotent factors is far from being unique.
The Factorization Theory (FT) is the branch of ring theory that studies nonuniqueness of the representation of non-invertible elements in rings or semigroups as products of generating (irreducible) elements. Originated in the late 1960s, FT got in the last decade new striking developments (especially in the non-commutative framework) that, however, just barely involved matrix rings.
The goal of FacT-in-MaRs is to study the nonuniqueness phenomena of idempotent matrix factorization from the point of view of the FT, thus connecting in an original way two areas of ring theory remained unrelated so far.
In the framework of the present action, we aim at advancing the state-of-the-art by:
1) defining a new concept of factorization into idempotent (non-irreducible) factors in the non-commutative semigroup of singular matrices over a domain R;
2) studying the nonuniqueness of this factorization in terms of arithmetical invariants (i.e. sets of legths/distances, elasticity);
3) exploiting the previous results to provide new approaches to the classical problems on factorizations in matrix rings.
The above objectives will be achieved through an innovative combination of classical and recent techniques of the theory of factorization of matrices over integral domains and of the FT, respectively belonging to the background of the applicant and of the Supervisor.
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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.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions
MAIN PROGRAMME
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H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility
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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.
MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)
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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) H2020-MSCA-IF-2020
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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.
8010 Graz
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.