Abstract
Automorphisms of order 2 are studied in order to understand generalized symmetric spaces. The groups of type \({{\mathrm{E}}}_6\) we consider here can be realized as both the group of linear maps that leave a certain determinant invariant, and also as the identity component of the automorphism group of a class of structurable algebras known as Brown algebras. We will classify the k-involutions of these groups of type \({{\mathrm{E}}}_6\) using aspects of both descriptions.
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References
Aschbacher, M., Seitz, G.: Involutions in Chevalley groups over fields of even order. Nagoya Math. J. 63, 1–91 (1976)
Berger, M.: Les espaces symétriques noncompacts. Annales scientifiques de l’École Normale Supérieure, Société mathématique de France 74, 85–177 (1957)
Brown, R.: A new type of nonassociative algebra. Proc. Natl. Acad. Sci. USA 50(5), 947 (1963)
Draper, C., Martín, C.: Gradings on \(\mathfrak{g}_2\). Linear Algebra Appl. 418(1), 85–111 (2006)
Draper, C., Martín, C.: Gradings on the Albert algebra and on \(\mathfrak{f}_4\). Revista Matemática Iberoamericana 25(3), 841–908 (2009)
Draper, C., Viruel, A.: Fine gradings on \(\mathfrak{e}_6\) (2015, preprint). arXiv:1207.6690
Elduque, A.: Gradings on octonions. J. Algebra 207(1), 342–354 (1998)
Elduque, A.: Jordan gradings on exceptional simple Lie algebras. Proc. Am. Math. Soc. 137(12), 4007–4017 (2009)
Elduque, A., Kochetov, M.: Gradings on Simple Lie Algebras, vol. 189. American Mathematical Society, Providence (2013)
Freudenthal, H.: Beziehungen der \({E}_7\) und \({E}_8\) zur oktavenebene. viii. Nederl. Akad. Wetensch. Prod. 62(21), 447–465 (1959)
Gantmacher, F.: On the classification of real simple Lie groups. Mat. Sb. 2, 235 (1939)
Garibaldi, R.: Structurable algebras and groups of type \({E}_6\) and \({E}_7\). J. Algebra 236(2), 651–691 (2001)
Garibaldi, S., Merkurjev, A., Serre, J.P.: Cohomological Invariants in Galois Cohomology, vol. 28. American Mathematical Society, Providence (2003)
Gorenstein, D., Lyons, R., Solomon, R.: The classification of the finite simple groups. Mathematical Surveys and Monographs, vol. 40. American Mathematical Society, Providence, p. 253 (1998)
Helminck, A.: On the classification of \(k\)-involutions. Adv. Math. 153(1), 1–117 (1988)
Helminck, A., Wu, L.: Classification of involutions of SL\((2, k)\). Commun. Algebra 30(1), 193–203 (2002)
Hurwitz, A.: Über die komposition der quadratischen formen. Math. Ann. 88(1), 1–25 (1922)
Hutchens, J.: Isomorphy classes of \(k\)-involutions of \({G}_2\). J. Algebra Appl. 13(7), 1–16 (2014)
Hutchens, J.: Isomorphism classes of \(k\)-involutions of algebraic groups of type \({F}_4\). J. Lie Theory 25(4), 1003–1022 (2015)
Jacobson, N.: Composition algebras and their automorphisms. Rend. del Circ. Mat. di Palermo 7(1), 55–80 (1958)
Jacobson, N.: Some groups of transformations defined by Jordan algebras. III. J. Reine Angew Math. 207, 61–85 (1961)
Jacobson, N.: Structure and Representations of Jordan Algebras, vol. 39. AMS Colloquium Publications, Providence (1968)
Kac, V.: Simple Lie groups and the Legendre symbol. In: Algebra Carbondale 1980. Springer, Berlin, pp. 110–123 (1981)
Knop, F., Roehrle, G.: Spherical subgroups in simple algebraic groups. Compos. Math., pp. 1–21 (2015)
Knus, M.A., Merkurjev, A., Rost, M., Tignol, J.P.: The Book of Involutions, vol. 44. AMS Colloquium Publications, Providence (1998)
Kochetov, M.: Gradings on finite-dimensional simple lie algebras. Acta Appl. Math. 108(1), 101–127 (2009)
Krämer, M.: Sphärische untergruppen in kompakten zusammenhängenden liegruppen. Compos. Math. 38, 129–153 (1979)
McCrimmon, K.: The Freudenthal–Springer–Tits constructions of exceptional Jordan algebras. Trans. Am. Math. Soc. 139, 495–510 (1969)
McCrimmon, K.: A Taste of Jordan Algebras. Springer-Universitext, New York (2005)
Serre, J.P.: Galois Cohomology. Springer, Berlin (1997)
Serre, J.P.: Coordonnées de Kac. In: Oberwolfach reports 3, Oberwolfach (2006)
Springer, T.: Jordan Algebras and Algebraic Groups. Springer, New York (1973)
Springer, T., Veldkamp, F.: Octonions, Jordan Algebras, and Exceptional Groups. Monograms in Mathematics. Springer, Berlin (2000)
Yokota, I.: Realizations of involutive automorphisms \(\sigma \) and \({G}_{\sigma }\) of exceptional linear lie groups \({G}\), part I, \({G} = {G}_2, {F}_4\) and \({E}_6\). Tsukuba J. Math. 14(1), 185–223 (1990)
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Hutchens, J. Isomorphism classes of k-involutions of algebraic groups of type \({{\mathrm{E}}}_6\) . Beitr Algebra Geom 57, 525–552 (2016). https://doi.org/10.1007/s13366-016-0280-z
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DOI: https://doi.org/10.1007/s13366-016-0280-z