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A character theoretic criterion for Fitting height

  • Heng Lv , Yuqi Deng und Yong Yang ORCID logo EMAIL logo
Veröffentlicht/Copyright: 21. Februar 2025

Abstract

For a finite group 𝐺, set

Irr N ( G ) := { χ Irr ( G ) χ ( 1 ) 2 | G : ker χ | } , cd N ( G ) := { χ ( 1 ) χ Irr N ( G ) } .

In this paper, we study finite groups 𝐺 with | cd N ( G ) | 1 . In particular, we prove that if 𝐺 has odd order, then h ( G ) | cd N ( G ) | + 1 , where h ( G ) is the Fitting height of 𝐺.

Award Identifier / Grant number: 12471019

Award Identifier / Grant number: SWU-XDJH202305

Award Identifier / Grant number: CSTB2024NSCQ-MSX0544

Funding source: Simons Foundation

Award Identifier / Grant number: 918096

Funding statement: This research was supported by the National Natural Science Foundation of China (No. 12471019), Fundamental Research Funds for Central Universities (No. SWU-XDJH202305), the Natural Science Foundation Project of CQCSTB (No. CSTB2024NSCQ-MSX0544), and a grant from the Simons Foundation (#918096).

Acknowledgements

The authors are grateful to the referee for the valuable suggestions which greatly improved the manuscript.

  1. Communicated by: Frank Lübeck

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Received: 2024-03-08
Revised: 2024-12-13
Published Online: 2025-02-21
Published in Print: 2025-07-01

© 2025 Walter de Gruyter GmbH, Berlin/Boston

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