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Generalisation into sentence and predicate positions

Project description

Advancing the science of generalisation

Generalisation helps us turn specific facts into broad principles, such as ‘All cells have a membrane’. While we understand generalisation for objects, like cells or numbers, higher-level generalisation about statements themselves is more complex. This involves choosing between two methods: higher-order logic or self-applicable theories. The ERC-funded GENERALISE project tackles these challenges by investigating these two key methods. This pioneering research promises to refine how we develop deductively robust theories, impacting fields ranging from mathematics and logic to computer science and philosophy. By exploring these foundational methods, GENERALISE aims to advance our understanding of generalisation in science and beyond.

Objective

Generalisations are fundamental to every scientific discipline: ‘Every cell has a plasma membrane’, ‘Every electron has a negative charge’, ‘Every natural number has a unique successor’. By means of generalisation we turn a statement about a particular individual into a statement about a class of entities. Generalisations are essential to valid deductive reasoning. They are the building blocks of virtually every scientific theory, and therefore essential to understanding, explaining, and making predictions.

The most basic and best understood form of generalisation is generalisation over objects (e.g. cells, electrons, numbers). In formal logic, this form of generalisation is achieved via first-order quantifiers, i.e. operators that bind variables in argument position. But many theoretical contexts require generalisation into sentence and predicate positions, a high-level form of generalisation where we make a general statement about a class of statements (e.g. mathematical induction, laws of logic).

There are two competing methods for achieving this form of generality (i.e. higher-order logic and self-applicable theories of truth, properties, and sets respectively). As both methods come with their own ideological and ontological commitments, it makes a substantial difference which one is chosen as the framework for formulating our mathematical, scientific, and philosophical theories.

Some research has been done in this direction but it is still very much in its early stages. This research project will significantly advance this foundational project. It will provide the first sustained systematic investigation of the two methods from a unified perspective, and develop novel formal tools to articulate deductively strong theories. Due to its foundational character, it will have an impact on many disciplines, especially the foundations of mathematics, logic, formal semantics, metaphysics, philosophy of language, and theoretical computer science.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-ERC - HORIZON ERC Grants

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Call for proposal

(opens in new window) ERC-2022-STG

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Host institution

UNIVERSITEIT VAN AMSTERDAM
Net EU contribution
€ 1 493 715,00
Total cost
€ 1 493 715,00

Beneficiaries (1)