Spreads and group divisible designs |
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| Authors: | Christine M O'Keefe Alan Rahilly |
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| Institution: | (1) Department of Pure Mathematics, The University of Adelaide, GPO Box 498, 5001 Adelaide, SA, Australia;(2) Centre for Combinatorics, Department of Mathematics, The University of Queensland, 4072 St. Lucia, Qld, Australia |
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| Abstract: | By removing the components of at-spread
of a finite projective spacePG(d, q) from each hyperplane ofPG(d, q), the blocks of a regular group divisible design
are obtained We characterize geometrict-spreads as thoset-spreads
which are such that the dual of
is also a group divisible design. |
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