"Embedding partial geometries in Steiner designs" by Andries Brouwer, Willem Haemers et al.
 

Embedding partial geometries in Steiner designs

Document Type

Article

Publication Date

1997

Abstract

We consider the following problem: given a partial geometry with v points and k points on a line, can one add to the line set a set of k-subsets of points such that the extended family of k-subsets is a 2-(v, k;, 1) design (or a Steiner system S(2, k, v)). We give some necessary conditions for such embeddings and several examples. One of these is an embedding of the partial geometry PQ+(7,2) into a 2-(120,8,1) design.

Publisher's Statement

Copyright Cambridge University Press 1997. Publisher’s version of record: https://doi.org/10.1017/CBO9780511526114.006

Publication Title

Geometry, Combinatorial Designs and Related Structures

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