Abstract

The structure of Ferrero pairs in terms of the sizes of the groups involved is investigated and an explicit condition is obtained. For every pair of numbers satisfying this criterion, a Ferrero pair is constructed explicitly. Thus the determination of interesting Ferrero pairs cannot be determined from their direct numerical properties.

MSC codes

  1. 16Y30
  2. 20B25
  3. 20D45

Keywords

  1. Ferrero pairs
  2. construction
  3. nearrings

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References

1.
J. R. Clay, Nearrings: Geneses and Applications, Oxford University Press, Oxford, UK, 1992.
2.
Giovanni Ferrero, Stems planari e BIB‐disegni, Riv. Mat. Univ. Parma (2), 11 (1970), 79–96
3.
Wen Ke, Hubert Kiechle, Automorphisms of certain design groups, J. Algebra, 167 (1994), 488–500
4.
Derek Robinson, A course in the theory of groups, Graduate Texts in Mathematics, Vol. 80, Springer‐Verlag, 1996xviii+499

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Published In

cover image SIAM Journal on Discrete Mathematics
SIAM Journal on Discrete Mathematics
Pages: 283 - 285
ISSN (online): 1095-7146

History

Published online: 1 August 2006

MSC codes

  1. 16Y30
  2. 20B25
  3. 20D45

Keywords

  1. Ferrero pairs
  2. construction
  3. nearrings

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