## Abstract All equivalence classes of Hadamard matrices of order at most 28 have been found by 1994. Order 32 is where a combinatorial explosion occurs on the number of Hadamard matrices. We find all equivalence classes of Hadamard matrices of order 32 which are of certain types. It turns out that
Some Hadamard matrices of order 32 and their binary codes
✍ Scribed by Makoto Araya; Masaaki Harada; Hadi Kharaghani
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 70 KB
- Volume
- 12
- Category
- Article
- ISSN
- 1063-8539
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✦ Synopsis
Abstract
It is known that all doubly‐even self‐dual codes of lengths 8 or 16, and the extended Golay code, can be constructed from some binary Hadamard matrix of orders 8, 16, and 24, respectively. In this note, we demonstrate that every extremal doubly‐even self‐dual [32,16,8] code can be constructed from some binary Hadamard matrix of order 32. © 2004 Wiley Periodicals, Inc.
📜 SIMILAR VOLUMES
## Abstract There are exactly 60 inequivalent Hadamard matrices of order 24. In this note, we give a classification of the self‐dual 𝔽~5~‐codes of length 48 constructed from the Hadamard matrices of order 24. © 2004 Wiley Periodicals, Inc.