Abstract.

We use invariant theory of finite groups to study shape enumerators of self-dual linear codes in a finite NRT metric space. We provide a new approach that avoids applying Molien’s formula to compute all possible shape enumerators. We also explicitly compute the shape enumerators of some low-dimensional self-dual NRT codes over an arbitrary finite field.

Keywords

  1. shape enumerators
  2. NRT metric
  3. invariant theory
  4. finite fields

MSC codes

  1. 94B50
  2. 13A50

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Acknowledgments.

The authors would like to thank the anonymous referees and the editor for their careful reading, constructive comments, and suggestions. The first author would like thank Professor Simon Xu for his helpful conversations and encouragement.

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Information & Authors

Information

Published In

cover image SIAM Journal on Discrete Mathematics
SIAM Journal on Discrete Mathematics
Pages: 2841 - 2854
ISSN (online): 1095-7146

History

Submitted: 22 January 2024
Accepted: 5 August 2024
Published online: 8 November 2024

Keywords

  1. shape enumerators
  2. NRT metric
  3. invariant theory
  4. finite fields

MSC codes

  1. 94B50
  2. 13A50

Authors

Affiliations

School of Computer Science & Technology, Algoma University, Brampton, ON, Canada, L6V 1A3. Current address: Department of Finance and Management Science, University of Saskatchewan, Saskatoon, SK, Canada, S7N 5A7.
Runxuan Zhang
Department of Mathematical and Physical Sciences, Concordia University of Edmonton, Edmonton, AB, Canada, T5B 4E4.

Funding Information

Algoma University: AURF-PT-40370-71
Funding: This research was partially supported by Algoma University under grant AURF-PT-40370-71.

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