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Exponent and p-rank of finite p-groups and applications

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Abstract

We bound the order of a finite p-group in terms of its exponent and p-rank. Here the p-rank is the maximal rank of an abelian subgroup. These results are applied to defect groups of p-blocks of finite groups with given Loewy length. Doing so, we improve results in a recent paper by Koshitani, Külshammer, and Sambale. In particular, we determine possible defect groups for blocks with Loewy length 4.

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References

  1. M. Aschbacher, R. Kessar, and B. Oliver, Fusion systems in algebra and topology, London Mathematical Society Lecture Note Series, Vol. 391, Cambridge University Press, Cambridge, 2011.

  2. Y. Berkovich, Groups of prime power order. Vol. 1, de Gruyter Expositions in Mathematics, Vol. 46, Walter de Gruyter GmbH & Co. KG, Berlin, 2008.

  3. Y. Berkovich, and Z. Janko, Groups of prime power order. Vol. 2, de Gruyter Expositions in Mathematics, Vol. 47, Walter de Gruyter GmbH & Co. KG, Berlin, 2008.

  4. Eaton C.W., Küshammer B., Sambale B.: 2-Blocks with minimal nonabelian defect groups II. J. Group Theory 15, 311–321 (2012)

    Article  MATH  MathSciNet  Google Scholar 

  5. The GAP Group, GAP—Groups, Algorithms, and Programming, Version 4.7.4; 2014, (http://www.gap-system.org).

  6. A. Glesser, Sparse fusion systems, Proc. Edinb. Math. Soc. (2) 56 (2013), 135–150.

  7. B. Huppert, Endliche Gruppen. I, Die Grundlehren der Mathematischen Wissenschaften, Band 134, Springer-Verlag, Berlin, 1967.

  8. S. Koshitani, On the projective cover of the trivial module over a group algebra of a finite group, Comm. Algebra (to appear).

  9. S. Koshitani, B. Küshammer, and B. Sambale, On Loewy lengths of blocks, Math. Proc. Cambridge Philos. Soc. 156 (2014), 555–570.

  10. Laffey T.J.: A lemma on finite p-groups and some consequences. Proc. Cambridge Philos. Soc. 75, 133–137 (1974)

    Article  MATH  MathSciNet  Google Scholar 

  11. T. J. Laffey, Bounding the order of a finite p-group, Proc. Roy. Irish Acad. Sect. A 80 (1980), 131–134.

  12. D. MacHale, and R. Sheehy, Finite groups with odd order automorphism groups, Proc. Roy. Irish Acad. Sect. A 95 (1995), 113–116.

  13. A. Mann, The power structure of p-groups. II, J. Algebra 318 (2007), 953–956.

  14. T. Okuyama, On blocks of finite groups with radical cube zero, Osaka J. Math. 23 (1986), 461–465.

  15. Robinson G. R.: On the focal defect group of a block, characters of height zero, and lower defect group multiplicities. J. Algebra 320, 2624–2628 (2008)

    Article  MATH  MathSciNet  Google Scholar 

  16. B. Sambale, Blocks of finite groups and their invariants, Habilitationsschrift, Jena, 2013.

  17. Sambale B.: Brauer’s Height Zero Conjecture for metacyclic defect groups. Pacific J. Math. 262, 481–507 (2013)

    Article  MATH  MathSciNet  Google Scholar 

  18. Sambale B.: Further evidence for conjectures in block theory. Algebra Number Theory 7, 2241–2273 (2013)

    Article  MATH  MathSciNet  Google Scholar 

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Correspondence to Benjamin Sambale.

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Sambale, B. Exponent and p-rank of finite p-groups and applications. Arch. Math. 103, 11–20 (2014). https://doi.org/10.1007/s00013-014-0665-x

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  • DOI: https://doi.org/10.1007/s00013-014-0665-x

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