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Title: The Cayley-Dickson Construction in Homotopy Type Theory (English)
Author: Buchholtz, Ulrik
Author: Rijke, Egbert
Language: English
Journal: Higher Structures
ISSN: 2209-0606
Volume: 2
Issue: 1
Year: 2018
Pages: 30-41
Summary lang: English
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Category: math
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Summary: We define in the setting of homotopy type theory an H-space structure on $\Bbb S^3$. Hence we obtain a description of the quaternionic Hopf fibration $\Bbb S^3 \hookrightarrow \Bbb S^7 \twoheadrightarrow \Bbb S^4 $, using only homotopy invariant tools. A side benefit is that the construction applies to more general $\infty$-categories than that of spaces. (English)
Keyword: Homotopy Type Theory
MSC: 03B15
MSC: 17A35
MSC: 55P45
MSC: 55U35
idZBL: Zbl 1522.03039
idMR: MR3917425
DOI: 10.21136/HS.2018.02
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Date available: 2026-03-10T14:46:51Z
Last updated: 2026-03-10
Stable URL: http://hdl.handle.net/10338.dmlcz/153401
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Reference: [1] Awodey, Steve, Warren, Michael A.: Homotopy theoretic models of identity types.Math. Proc. Cambridge Philos. Soc., Vol. 146, Iss. 1, 45-55, DOI:10.1017/S0305004108001783 10.1017/S0305004108001783
Reference: [2] Baez, John C.: The octonions.Bull. Amer. Math. Soc. (N.S.), Vol. 39, Iss. 2, 145-205, DOI:10.1090/S0273-0979-01-00934-X 10.1090/S0273-0979-01-00934-X
Reference: [3] Berg, Benno, Garner, Richard: Topological and simplicial models of identity types.ACM Trans. Comput. Log., Vol. 13, Iss. 1, Art. 3, 44, DOI:10.1145/2071368.2071371 10.1145/2071368.2071371
Reference: [4] Bezem, Marc, Coquand, Thierry, Huber, Simon: A model of type theory in cubical sets.19th International Conference on Types for Proofs and Programs, pages 107-128, LIPIcs. Leibniz int. Proc. inform. 26
Reference: [5] Buchholtz, Ulrik: H-space structures on non-sphere suspensions?.http://mathoverflow.net/q/235840, MathOverflow Question
Reference: [6] Cohen, Cyril, Coquand, Thierry, Huber, Simon, Mörtberg, Anders: Cubical type theory: A constructive interpretation of the univalence axiom.21st International Conference on Types for Proofs and Programs (TYPES 2015), pages , LIPIcs. Leibniz int. Proc. inform.
Reference: [7] Dickson, Leonard E.: On quaternions and their generalization and the history of the eight square theorem.Ann. of Math. (2), Vol. 20, Iss. 3, 155-171, DOI:10.2307/1967865 10.2307/1967865
Reference: [8] Kapulkin, Chris, Lumsdaine, Peter LeFanu: The simplicial model of univalent foundations (after Voevodsky).
Reference: [9] Licata, Daniel R., Brunerie, Guillaume: A cubical approach to synthetic homotopy theory.Proceedings of the 2015 30th annual ACM/IEEE symposium on logic in computer science (LICS), pp 92-103, DOI:10.1109/LICS.2015.19 10.1109/LICS.2015.19
Reference: [10] Martin-Löf, Per: Intuitionistic type theory.Studies in proof theory, Bibliopolis, ISBN:88-7088-105-9
Reference: [11] Moura, Leonardo, Kong, Soonho, Avigad, Jeremy, Doorn, Floris, Raumer, Jakob: The lean theorem prover (system description).Automated deduction – CADE-25, pp 378-388, DOI:10.1007/978-3-319-21401-6_26 10.1007/978-3-319-21401-6_26
Reference: [12] Rezk, Charles: Proof of the Blakers-Massey theorem.http://www.math.uiuc.edu/~rezk/freudenthal-and-blakers- massey.pdf, Note
Reference: [13] Serre, Jean-Pierre: Homologie singulière des espaces fibrés. Applications.Ann. of Math. (2), Vol. 54, 425-505
Reference: [14] Shulman, Michael: Brouwer’s fixed-point theorem in real-cohesive homotopy type theory.Preprint
Reference: [15] Shulman, Michael: The univalence axiom for elegant Reedy presheaves.Preprint
Reference: [16] Shulman, Michael: Univalence for inverse EI diagrams.Homology, Homotopy and Applications, Vol. 19, Iss. 2, 219-249, DOI:10.4310/HHA.2017.v19.n2.a12 10.4310/HHA.2017.v19.n2.a12
Reference: [17] Univalent Foundations Program, The: Homotopy type theory: Univalent foundations of mathematics.http://homotopytypetheory.org/book/
Reference: [18] West, Robert W.: H-spaces which are co-H-spaces.Proc. Amer. Math. Soc., Vol. 31, 580-582
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