Abstract
We study the relationship between linear codes with the rank metric in the vector space of matrices with entries in a finite field and a q-analogue of matroids. We prove a Greene type identity for the rank generating function of these matroidal structures and the rank weight enumerator of these linear codes. As an application, we give a combinatorial proof of the MacWilliams type identity for Delsarte rank-metric codes.
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Acknowledgements
The author would like to thank Professor Frederique Oggier for introducing the concept of rank-metric codes. The author would like to thank the anonymous reviewers for their very helpful comments and suggestions that improved the paper.
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Communicated by C. Ding.
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This work was supported by JSPS KAKENHI Grant Number 17K05348.
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Shiromoto, K. Codes with the rank metric and matroids. Des. Codes Cryptogr. 87, 1765–1776 (2019). https://doi.org/10.1007/s10623-018-0576-0
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DOI: https://doi.org/10.1007/s10623-018-0576-0