We shall refer to a diagonal Latin square which is orthogonal to its (3, 2, 1)-conjugate and having its (3, 2, 1)-conjugate also a diagonal Latin square as a (3, 2, 1)-conjugate orthogonal diagonal Latin square, briefly CODLS. This article investigates the spectrum of CODLS and it is found that it c
Existence of (3, 1, 2)-conjugate orthogonal diagonal latin squares
β Scribed by Frank E. Bennett; Beiliang Du; Hantao Zhang
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 159 KB
- Volume
- 9
- Category
- Article
- ISSN
- 1063-8539
- DOI
- 10.1002/jcd.1013
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β¦ Synopsis
Abstract
We shall refer to a diagonal Latin square which is orthogonal to its (3,1,2)βconjugate, and the latter is also a diagonal Latin square, as a (3,1, 2)βconjugate orthogonal diagonal Latin square, briefly CODLS. This article investigates the spectrum of CODLS and it is found that it contains all positive integers Ο except 2, 3, 6, and possibly 10. Β© 2001 John Wiley & Sons, Inc. J Combin Designs 9: 297β308, 2001
π SIMILAR VOLUMES
In this article we give some new constructions of self-conjugate self-orthogonal diagonal Latin squares (SCSODLS). As an application of such constructions, we give a conclusive result regarding the existence of SCSODLS and show that there exists an SCSODLS of order n if and only if n β‘ 0, 1 (mod 4),
We prove that there exists a pair of orthogonal diagonal Latin squares of order v with missing subsquares of side n (ODLS(v,n)) for all v ~> 3n + 2 and v -n even. Further, there exists a magic square of order v with missing subsquare of side n (MS(v, n)) for all v ~> 3n + 2 and v -n even.
Let us denote by COILS(v) a (3,2, l)-conjugate orthogonal idempotent Latin square of order v, and by ICOILS(v, n) an incomplete COILS(v) missing a sub-COILS(n). A necessary condition for the existence of an ICOILS(v, and the necessary condition for its existence has recently been shown by the auth