Abstract
In the ongoing revision of the classification of the finite simple groups there is a subdivision into two classes of groups, which reflects whether semisimple elements or unipotent elements are the primary focus of the investigation. While semisimple methods naturally lead to the definition of groups of even type, unipotent methods, notably the amalgam method, naturally lead to groups of even characteristic. This paper clarifies the relationship between the two definitions and thus makes the amalgam method available for use in the classification of groups of even type.
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References
M. Aschbacher, On finite groups of component type, Illinois Journal of Mathematics 19 (1975), 87–115.
M. Aschbacher, A characterization of Chevalley groups over fields of odd order, I, II, Annals of Mathematics 106 (1977), 353–468; Correction, Annals of Mathematics 111 (1980), 411–414.
M. Aschbacher, Standard components of alternating type centralized by a 4-group, Journal of Algebra 319 (2008), 595–616.
M. Aschbacher, 3-Transposition Groups, Cambridge Tracts in Mathematics, Vol. 124, Cambridge Universtity Press, Cambridge, 1997.
M. Aschbacher, Sporadic Groups, Cambridge Tracts in Mathematics, Vol. 104, Cambridge University Press, Cambridge, 1994.
M. Aschbacher, The uniqueness case for finite groups I, II, Annals of Mathematics 117 (1983), 383–454, 455–551.
M. Aschbacher and G. Seitz, On groups with a standard component of known type, Osaka Journal of Mathematics 13 (1976), 439–482.
M. Aschbacher and G. Seitz, On groups with a standard component of known type II, Osaka Journal of Mathematics 18 (1981), 703–723.
M. Aschbacher and G. Seitz, Involutions in Chevalley groups over fields of even order, Nagoya Mathematical Journal 63 (1976), 1–91; Correction, Nagoya Mathematical Journal 72 (1978), 135–136.
M. Aschbacher and S. Smith, The Classification of Quasithin Groups I, II, Mathematical Surveys and Monographs, Vols. 111, 112, American Mathematical Society, Providence, RI, 2004.
H. Azad, M. Barry and G. Seitz, On the structure of parabolic subgroups, Communications in Algebra 18 (1990), 551–562.
J. Conway, R. Curtis, S. Norton, R. Parker and R. Wilson, Atlas of Finite Groups, Oxford University Press, Eynsham, 1985.
C. Curtis, W. Kantor and G. Seitz, The 2-Transitive Permutation Representations of the Finite Chevalley Groups, Transactions of the American Mathematical Society 218 (1976), 1–59.
S. Davis and R. Solomon, Some sporadic characterizations, Communications in Algebra 9 (1981), 1725–1742.
A. Delgado, D. Goldschmidt and B. Stellmacher, Groups and Graphs: New Results and Methods, DMV Seminar, Vol. 6, Birkhäuser, Basel, 1985.
W. Feit and J. Thompson, Solvability of groups of odd order, Pacific Journal of Mathematics 13 (1963), 775–1029.
G. Glaubermann, Central elements in core-free groups, Journal of Algebra 4 (1966), 403–421.
D. Gorenstein and R. Lyons, Finite groups of characteristic 2 type, Memoirs of the American Mathematical Society 276 (1983).
D. Gorenstein, R. Lyons and R. Solomon, The Classification of the Finite Simple Groups, Mathematical Surveys and Monographs, Vol. 40.1, American Mathematical Society, Providence, RI, 1994.
D. Gorenstein, R. Lyons and R. Solomon, The Classification of the Finite Simple Groups, Mathematical Surveys and Monographs, Vol. 40.2, American Mathematical Society, Providence, RI, 1996.
D. Gorenstein, R. Lyons and R. Solomon, The Classification of the Finite Simple Groups, Mathematical Surveys and Monographs, Vol. 40.3, American Mathematical Society, Providence, RI, 1998.
D. Gorenstein, R. Lyons and R. Solomon, The Classification of the Finite Simple Groups, Mathematical Surveys and Monographs, Vol. 40.4, American Mathematical Society, Providence, RI, 1999.
D. Gorenstein, R. Lyons and R. Solomon, The Classification of the Finite Simple Groups, Mathematical Surveys and Monographs, Vol. 40.6, American Mathematical Society, Providence, RI, 2000.
B. Huppert, Endliche Gruppen I, Die Grundlehren der Mathematischen Wissenschaften, Vol. 134, Springer, Berlin–New York, 1967.
H. Kurzweil and B. Stellmacher, The Theory of Finite Groups. An Introduction, Universitext, Springer, New York, 2004.
U. Meierfrankenfeld, B. Stellmacher and G. Stroth, The structure theorem for finite groups with a large p-subgroup, Memoirs of the American Mathematical Society, to appear.
K. Shinoda, Conjugacy classes of Chevalley groups of type (F 4), Journsl of the Faculty of Science. University of Tokyo. Section IA. Mathematics 21 (1974), 133–159.
S. Smith, Irreducible modules and parabolic subgroups, Journal of Algebra 75 (1982), 286–289.
R. Weiss, The automorphism group of 2 F 4(2)’, Proceedings of the American Mathematical Society 66 (1977), 208–210.
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Magaard, K., Stroth, G. Groups of even type which are not of even characteristic, I. Isr. J. Math. 213, 211–278 (2016). https://doi.org/10.1007/s11856-016-1313-x
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DOI: https://doi.org/10.1007/s11856-016-1313-x