Some new symmetric Hadamard matrices

Fuente: arXiv
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Main Author: Đoković, Dragomir Ž.
Format: Preprint
Published: 2021
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_version_ 1866911846632521728
author Đoković, Dragomir Ž.
author_facet Đoković, Dragomir Ž.
contents First examples of symmetric Hadamard matrices of orders 508 and 764 are constructed. The method used is known as the propus construction. A conjecture regarding this method is formally proposed but it appears implicitly in three previous joint papers with N. A. Balonin et alias. The conjecture has been verified for Hadamard matrices of order 4v with odd v<54. In this note the conjecture is verified for v=55,57,59,61,63.
format Preprint
id arxiv_https___arxiv_org_abs_2101_05429
institution arXiv
publishDate 2021
record_format arxiv
spellingShingle Some new symmetric Hadamard matrices
Đoković, Dragomir Ž.
Combinatorics
05B20 (Primary), 05B10 (Secondary)
First examples of symmetric Hadamard matrices of orders 508 and 764 are constructed. The method used is known as the propus construction. A conjecture regarding this method is formally proposed but it appears implicitly in three previous joint papers with N. A. Balonin et alias. The conjecture has been verified for Hadamard matrices of order 4v with odd v<54. In this note the conjecture is verified for v=55,57,59,61,63.
title Some new symmetric Hadamard matrices
topic Combinatorics
05B20 (Primary), 05B10 (Secondary)
url https://arxiv.org/abs/2101.05429