# Chasing Individuation: Mathematical Description of Physical Systems

Dissertation, Paris Diderot University (2016)

**Abstract**

This work is a conceptual analysis of certain recent developments in the mathematical foundations of Classical and Quantum Mechanics which have allowed to formulate both theories in a common language. From the algebraic point of view, the set of observables of a physical system, be it classical or quantum, is described by a Jordan-Lie algebra. From the geometric point of view, the space of states of any system is described by a uniform Poisson space with transition probability. Both these structures are here perceived as formal translations of the fundamental twofold role of properties in Mechanics: they are at the same time quantities and transformations. The question becomes then to understand the precise articulation between these two roles. The analysis will show that Quantum Mechanics can be thought as distinguishing itself from Classical Mechanics by a compatibility condition between properties-as-quantities and properties-as-transformations.
Moreover, this dissertation shows the existence of a tension between a certain "abstract way" of conceiving mathematical structures, used in the practice of mathematical physics, and the necessary capacity to specify particular states or observables. It then becomes important to understand how, within the formalism, one can construct a labelling scheme. The “Chase for Individuation” is the analysis of different mathematical techniques which attempt to overcome this tension. In particular, we discuss how group theory furnishes a partial solution.

**Keywords**

**Categories**

**PhilPapers/Archive ID**

FEDCIM

**Revision history**

Archival date: 2016-12-13

View upload history

View upload history

References found in this work BETA

On the Plurality of Worlds.Lewis, David K.

Mathematics as a Science of Patterns.Resnik, Michael D.

Physics and Leibniz's Principles.Saunders, Simon

Frege's Conception of Numbers as Objects.Wright, Crispin

View all 18 references / Add more references

Citations of this work BETA

No citations found.

**Added to PP index**

2016-12-13

**Total views**

169 ( #20,446 of 44,257 )

**Recent downloads (6 months)**

68 ( #9,473 of 44,257 )

How can I increase my downloads?

**Downloads since first upload**

*This graph includes both downloads from PhilArchive and clicks to external links.*