Abstract
Let A and B be graded algebras in the same variety of trace algebras, such that A is a finite-dimensional, central simple power associative algebra (in the ordinary sense). Over a field K of characteristic zero, we study sufficient conditions that ensure B to be a graded subalgebra of A. More precisely, we prove, under additional hypotheses, that there is a graded and trace-preserving embedding from B to A over some associative and commutative K-algebra C if and only if B satisfies all G-trace identities of A over K. As a consequence of these results, we give a geometric interpretation of our main theorem under the context of graded algebras, and we apply them beyond the Cayley–Hamilton algebras presented in [24, 29]. Such results open a wide range of opportunities to study geometry in Jordan and alternative algebras (with trivial grading).
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Many thanks to the anonymous referee for spotting several inaccuracies and helping to improve the text.
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Partially suported by FAPEMIG Universal project number APQ-01655-22, CNPQ project number 408974/2023-0, and FAPESQ-PB grant No. 2021/3176.
Supported by CNPq grant No. 305651/2021-8 and FAPESP grant No. 2023/04011-9.
Partially supported by CNPq grant No. 404851/2021-5 and by a PhD grant from CAPES, Brazil.
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Almeida, C., Fidelis, C. & Galdino, J.L. A generalization of Cayley–Hamilton algebras and an introduction to their geometries. Isr. J. Math. (2024). https://doi.org/10.1007/s11856-024-2614-0
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DOI: https://doi.org/10.1007/s11856-024-2614-0