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Fundamentalnaya i Prikladnaya Matematika, 2021, Volume 23, Issue 4, Pages 177–207
(Mi fpm1916)
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This article is cited in 1 scientific paper (total in 1 paper)
Four-dimensional real division algebras with few derivations
O. Fayza, E. Napedeninab, A. Rochdia, M. Tvalavadzec a Département de Mathématiques et Informatique, Faculté des Sciences Ben M’Sik,
Université Hassan II, 7955 Casablanca, Morocco
b D. Mendeleev University of Chemical Technology of Russia
c Department of Mathematical and Computational Sciences, University of Toronto Mississauga,
3359 Mississauga Road N., Mississauga, On L5L 1C6, Canada
Abstract:
In order to advance in the determination of all four-dimensional real division algebras $\mathcal{A}$, we introduce a new duplication process preserving the unit. This duplication process accompanied by an isotopy allow us to obtain all of these algebras in case $\operatorname{Der}(\mathcal{A})\neq\{0\}$ and partially in case $\operatorname{Der}(\mathcal{A})=\{0\}$. In the last case, we provide an $8$-parameter family of ugly $\mathbb C$-associative algebras and an $8$-parameter family of $\mathbb C$-associative algebras whose group of automorphisms contains only the identity and some reflections. For non-ugly algebras $\mathbb H_{f, f}$, the group $\operatorname{Aut}(\mathbb H_{f, f})$ contains a reflection. Also algebras $\mathcal A$ with $\operatorname{Aut}(\mathcal A)=\mathbb Z_2$ or $\mathbb Z_2\times\mathbb Z_2$ are studied.
Citation:
O. Fayz, E. Napedenina, A. Rochdi, M. Tvalavadze, “Four-dimensional real division algebras with few derivations”, Fundam. Prikl. Mat., 23:4 (2021), 177–207; J. Math. Sci., 269:4 (2023), 568–590
Linking options:
https://www.mathnet.ru/eng/fpm1916 https://www.mathnet.ru/eng/fpm/v23/i4/p177
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Abstract page: | 100 | Full-text PDF : | 50 | References: | 18 |
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