Journals / International Electronic Journal of Algebra / 2022 / Cilt: 32 Sayı: 32

Wedderburn decomposition of a semisimple group algebra $\mathbb{F}_qG$ from a subalgebra of factor group of $G$

Pages
91–100
Publication Date
2022-07-16
DOI
—
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

In order to complement the abstract theory of the paper, we deduce the Wedderburn decomposition and hence the unit group of semisimple group algebra $\mathbb{F}_q(A_5\rtimes C_4)$, where $A_5\rtimes C_4$ is a non-metabelian group and $C_4$ is a cyclic group of order $4$.

📌 3 Key Takeaways

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Objective & Hypothesis:In this paper, we derive a condition under which the Wedderburn decomposition of a semisimple group algebra $\mathbb{F}_qG$ can be deduced from the Wedderburn decomposition of $\mathbb{F}_q(G/H)$, where $H$ is a normal subgroup of $G$ having two elements and $q=p^k$ for some prime $p$ and $k\in \mathbb{Z}^+$.
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Key Findings & Data:In this paper, we derive a condition under which the Wedderburn decomposition of a semisimple group algebra $\mathbb{F}_qG$ can be deduced from the Wedderburn decomposition of $\mathbb{F}_q(G/H)$, where $H$ is a normal subgroup of $G$ having two elements and $q=p^k$ for some prime $p$ and $k\in \mathbb{Z}^+$.
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Conclusion & Impact:In order to complement the abstract theory of the paper, we deduce the Wedderburn decomposition and hence the unit group of semisimple group algebra $\mathbb{F}_q(A_5\rtimes C_4)$, where $A_5\rtimes C_4$ is a non-metabelian group and $C_4$ is a cyclic group of order $4$.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Wedderburn decomposition · unit group · finite field

Abstract

In this paper, we derive a condition under which the Wedderburn decomposition of a semisimple group algebra $\mathbb{F}_qG$ can be deduced from the Wedderburn decomposition of $\mathbb{F}_q(G/H)$, where $H$ is a normal subgroup of $G$ having two elements and $q=p^k$ for some prime $p$ and $k\in \mathbb{Z}^+$. In order to complement the abstract theory of the paper, we deduce the Wedderburn decomposition and hence the unit group of semisimple group algebra $\mathbb{F}_q(A_5\rtimes C_4)$, where $A_5\rtimes C_4$ is a non-metabelian group and $C_4$ is a cyclic group of order $4$.

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Cite This Article

MITTAL, G., SHARMA, R. K. (2022). Wedderburn decomposition of a semisimple group algebra $\mathbb{F}_qG$ from a subalgebra of factor group of $G$. International Electronic Journal of Algebra, Cilt: 32 Sayı: 32, 91–100. https://ajindex.com/articles/918601

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References (16)

  1. G. K. Bakshi, S. Gupta and I. B. S. Passi, The algebraic structure of finite metabelian group algebras, Comm. Algebra, 43(6) (2015), 2240-2257.
  2. R. A. Ferraz, Simple components of the center of $\mathbb{F}G/J(\mathbb{F}G)$, Comm. Algebra, 36(9) (2008), 3191-3199.
  3. M. Khan, R. K. Sharma and J. B. Srivastava, The unit group of $FS_4$, Acta Math. Hungar., 118(1-2) (2008), 105-113.
  4. R. Lidl and H. Niederreiter, Introduction to Finite Fields and Their Applications, Cambridge University Press, New York, 1994.
  5. N. Makhijani, R. K. Sharma and J. B. Srivastava, The unit group of $\mathbb{F}_q[D_{30}]$, Serdica Math. J., 41 (2015), 185-198.
  6. N. Makhijani, R. K. Sharma and J. B. Srivastava, A note on the structure of $\mathbb{F}_{p^k}A_5/J(\mathbb{F}_{p^k}A_5)$, Acta Sci. Math. (Szeged), 82 (2016), 29-43.
  7. C. P. Milies and S. K. Sehgal, An Introduction to Group Rings, Kluwer Academic Publishers, Dordrecht, 2002.
  8. G. Mittal and R. K. Sharma, On unit group of finite group algebras of non-metabelian groups upto order 72, Math. Bohem., 146(4) (2021), 429-455.
  9. G. Mittal and R. K. Sharma, On unit group of finite group algebras of non-metabelian groups of order 108, J. Algebra Comb. Discrete Appl., 8(2) (2021), 59-71.
  10. G. Mittal and R. K. Sharma, Unit group of semisimple group algebras of some non-metabelian groups of order 120, Asian-Eur. J. Math, (2021),
  11. Online first, DOI: 10.1142/S1793557122500590. S. Perlis and G. L. Walker, Abelian group algebras of finite order, Trans. Amer. Math. Soc., 68 (1950), 420-426.
  12. B. Sagan, The Symmetric Group, Representations, Combinatorial Algorithms, and Symmetric Functions, Springer-Verlag, 2001.
  13. R. K. Sharma and G. Mittal, Unit group of semisimple group algebra $F_qSL(2, 5)$, Math. Bohem., (2021),
  14. Online first, DOI: 10.21136/MB.2021.0104-20.
  15. R. K. Sharma, J. B. Srivastava and M. Khan, The unit group of FA_4, Publ. Math. Debrecen, 71(1-2) (2007), 21-26.
  16. P. Webb, A Course in Finite Group Representation Theory, Cambridge Studies in Advanced Mathematics, 161, Cambridge University Press, Cambridge, 2016.