title: Perfect Symmetries
creator: Healey, Richard
subject: Classical Physics
subject: Models and Idealization
subject: Symmetries/Invariances
description: While empirical symmetries relate situations, theoretical symmetries relate models of a theory we use to represent them. An empirical symmetry is perfect if and only if any two situations it relates share all intrinsic properties. Sometimes one can use a theory to explain an empirical symmetry by showing how it follows from a corresponding theoretical symmetry. The theory then reveals a perfect symmetry. I say what this involves and why it matters, beginning with a puzzle which is resolved by the subsequent analysis. I conclude by pointing to applications and implications of the ideas developed earlier in the paper.
date: 2007-12
type: Preprint
type: NonPeerReviewed
format: application/pdf
identifier: http://philsci-archive.pitt.edu/3744/1/PerfectsymmetriesBJPS.pdf
identifier: Healey, Richard (2007) Perfect Symmetries. [Preprint]
relation: http://philsci-archive.pitt.edu/3744/