Found 32 Documents (Results 1–32)
A short disproof of Euler’s conjecture based on quasi-difference matrices and difference matrices. (English) Zbl 1380.05021
Intersection problem for simple 2-fold \((3n,n, 3)\) group divisible designs. (English) Zbl 1312.05024
Groupoids with quasigroup and Latin square properties. (English) Zbl 1167.20037
Reviewer: C. Pereira da Silva (Curitiba)
Totally anti-symmetric quasigroups for all orders \(n\neq 2,6\). (English) Zbl 1128.20053
Reviewer: C. Pereira da Silva (Curitiba)
Incomplete orthogonal arrays and idempotent orthogonal arrays. (English) Zbl 0864.05016
Reviewer: J.Bierbrauer (Houghton)
The spectra of a variety of quasigroups and related combinatorial designs. (English) Zbl 0681.20042
Reviewer: V.Tonchev
On the existence of frames. (English) Zbl 0465.05015
A generalization of the singular direct product with applications to skew room squares. (English) Zbl 0461.05013
MSC:
05B15
On the spectra of certain types of latin square. (English) Zbl 0325.05012
MSC:
05B15
Remarks on Sade’s disproof of the Euler conjecture with an application to Latin squares orthogonal to their transpose. (English) Zbl 0325.05011
MSC:
05B15
A further construction of double diagonal orthogonal latin squares. (English) Zbl 0305.05013
MSC:
05B15
On the construction of cyclic quasigroups. (English) Zbl 0268.20052
MSC:
20N05
Extended triple systems. (English) Zbl 0256.20096
Construction of Steiner quasigroups containing a specified number of subquasigroups of a given order. (English) Zbl 0248.20092
MSC:
20N05
Construction of quasigroups containing a specified number of subquasigroups of a given order. (English) Zbl 0229.20074
MSC:
20N05
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