Objective
This project aims to establish the time complexity of algorithms for two classes of problems. The first class consists of problems related to Boolean matrix multiplication and matrix multiplication over various semirings. This class contains problems such as computing transitive closure of a graph and determining the minimum distance between all-pairs of nodes in a graph. Known combinatorial algorithms for these problems run in slightly sub-cubic time. By combinatorial algorithms we mean algorithms that do not rely on the fast matrix multiplication over rings. Our goal is to show that the known combinatorial algorithms for these problems are essentially optimal. This requires designing a model of combinatorial algorithms and proving almost cubic lower bounds in it.
The other class of problems that we will focus on contains dynamic data structure problems such as dynamic graph reachability and related problems. Known algorithms for these problems exhibit trade-off between the query time and the update time, where at least one of them is always polynomial. Our goal is to show that indeed any algorithm for these problems must have update time or query time at least polynomial.
The two classes of problems are closely associated with so called 3SUM problem which serves as a benchmark for uncomputability in sub-quadratic time. Our goal is to deepen and extend the known connections between 3SUM, the other two classes and problems like formula satisfiability (SAT).
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.
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.
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.
ERC-2013-CoG
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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.
Host institution
116 36 Praha 1
Czechia
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.