On the extendability of steiner t‐designs
Necessary and sufficient conditions for the extendability of residual designs of Steiner systems S(t,t + 1,v) are studied. In particular, it is shown that a residual design with respect to a single point is uniquely extendable, and the extendability of a residual design with respect to a pair of points is equivalent to a bipartition of the block graph of a related design.
Journal of Combinatorial Designs
On the extendability of steiner t‐designs.
Journal of Combinatorial Designs,
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Copyright © 1993 Wiley Periodicals, Inc., A Wiley Company. Publisher’s version of record: https://doi.org/10.1002/jcd.3180010305