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Thesaurus racks: Categorizing rack objects
Stockholm University, Faculty of Science, Department of Mathematics.
Number of Authors: 12021 (English)In: Journal of knot theory and its ramifications, ISSN 0218-2165, Vol. 30, no 04, article id 2150019Article in journal (Refereed) Published
Abstract [en]

We define and explore rack objects internal to categories with products. In demonstration, we classify the group-racks, and use homotopy to prove both existence and exclusion theorems for path-connected topological racks.

Place, publisher, year, edition, pages
2021. Vol. 30, no 04, article id 2150019
Keywords [en]
Category theory, rack theory, categorical racks
National Category
Mathematics
Identifiers
URN: urn:nbn:se:su:diva-196371DOI: 10.1142/S021821652150019XISI: 000661627800002OAI: oai:DiVA.org:su-196371DiVA, id: diva2:1591466
Available from: 2021-09-06 Created: 2021-09-06 Last updated: 2024-08-22Bibliographically approved
In thesis
1. The Art of Bad Art: Diagrammatics in Mathematical Physics
Open this publication in new window or tab >>The Art of Bad Art: Diagrammatics in Mathematical Physics
2024 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The purpose of a proof is to reduce the complexity of a statement until it becomes a sequence of trivialities. To this end, the choice of notation, diagrams and overall paradigm can aid in conveying large amounts of information in a simple manner. This compilation thesis focuses on the choice of visual tools to convey algebraic results in the context of mathematical physics, using a categorical paradigm with various topological semantics. The topics range from covering known results in knot theory, abstract diagram categories and low-dimensional topological quantum field theory, to novel results such as the topological rack exclusion principle, tetrahedral symmetry of framed associators and new diagrammatics for graded-monoidal categories based on the Kleisli presentation.We demonstrate how these diagrammatic methods can be used to simplify algebraic proofs and communicate across disciplines.

Place, publisher, year, edition, pages
Stockholm: Department of Mathematics, Stockholm University, 2024. p. 38
Keywords
Quantum Algebra, Category Theory, Supercategories, Knot Theory, Mathematical Physics, TQFT
National Category
Mathematics
Research subject
Mathematics
Identifiers
urn:nbn:se:su:diva-232734 (URN)978-91-8014-907-5 (ISBN)978-91-8014-908-2 (ISBN)
Public defence
2024-09-25, lärosal 17, hus 2, plan 2, Albano, Albanovägen 20, Stockholm, 13:00 (English)
Opponent
Supervisors
Available from: 2024-09-02 Created: 2024-08-22 Last updated: 2024-08-27Bibliographically approved

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Grøsfjeld, Tobias

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