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2015 | OriginalPaper | Buchkapitel

Menon–Hadamard Difference Sets Obtained from a Local Field by Natural Projections

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Abstract

We know there exists a family of Menon–Hadamard difference sets over Galois rings of characteristic of an even power of 2 and of an odd extension degree, which has a nested structure. The projective limit of these Menon–Hadamard difference sets is a non-empty subset of a valuation ring of a local field. Conversely, does there exist a subset of a local field whose image by the natural projection always gives a difference set over a Galois ring? We will show an answer to this problem. A family of Menon–Hadamard difference sets is obtained from a subgroup of a valuation ring of a local field by the natural projections and it also has a nested structure. The formal group and the p-adic logarithm function serve an important role to the construction.

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Fußnoten
1
This paper is in final form and no similar paper has been or is being submitted elsewhere.
 
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Metadaten
Titel
Menon–Hadamard Difference Sets Obtained from a Local Field by Natural Projections
verfasst von
Mieko Yamada
Copyright-Jahr
2015
DOI
https://doi.org/10.1007/978-3-319-17729-8_20