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What is an Algorithm? Extensional and Intensional Equivalences between Programs

Objective

"Programs and Functons both have a mathematically sound definition. Every programmer has an informal idea of what an Algorithm is, yet no formal definition exists and this idea is likely to differ from one person to the other. Despite their lack of definition, Algorithms are central in Computer Science. Thus, finding a correct definition is a major modern challenge.

This question is not new and has already been studied by many. It is unlikely that we can close it within a two years timeframe. Yet we have identified two novel ideas to attack the problem along three tracks of increasing difficulty thus ensuring results that will drive a future long term project.

The main idea is to avoid a direct confrontation with the definition of Algorithm. We consider ""being the same algorithm"" as an equivalence between programs and we study the set of all possible equivalences. This will allow the use of the full mathematical arsenal, from set and order theory to algebra and topology, and guide future researches. The second idea is to allow algorithms to be an infinite object, thus opening more possibilities.

The Researchers already has a permanent Lecturer position. The fellowship will create the condition for defending the Habilitation thesis and thus reach a position of full professorship with a long term research program based on the results obtained."

Fields of science (EuroSciVoc)

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Programme(s)

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.

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.

MSCA-IF-EF-ST - Standard EF

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Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

(opens in new window) H2020-MSCA-IF-2014

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Coordinator

KOBENHAVNS UNIVERSITET
Net EU contribution

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.

€ 200 194,80
Address
NORREGADE 10
1165 KOBENHAVN
Denmark

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Region
Danmark Hovedstaden Byen København
Activity type
Higher or Secondary Education Establishments
Links
Total cost

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.

€ 200 194,80
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