Designs, Codes and Cryptography

, Volume 44, Issue 1–3, pp 11–14 | Cite as

A design and a geometry for the group Fi 22

  • P. J. Cameron
  • A. Rudvalis


The Fischer group Fi 22 acts as a rank 3 group of automorphisms of a symmetric 2-(14080,1444,148) design. This design does not have a doubly transitive automorphism group, since there is a partial linear space with lines of size 4 defined combinatorially from the design and preserved by its automorphism group. We investigate this geometry and determine the structure of various subspaces of it.


Symmetric design Geometry Automorphism group 

AMS Classification

Primary 05B05 Secondary 05B25 Secondary 20B25 


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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.School of Mathematical SciencesQueen Mary, University of LondonLondonUK
  2. 2.Mathematics and StatisticsUniversity of Massachusetts AmherstAmherstUSA

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