Multiple blocking sets in PG(n,q), n>=3.

Janos Barat

    Research output: Contribution to journalJournal articleResearchpeer-review


    This article discusses minimal s-fold blocking sets B in PG (n, q), q = ph, p prime, q > 661, n > 3, of size |B| > sq + cp q2/3 - (s - 1) (s - 2)/2 (s > min (cp q1/6, q1/4/2)). It is shown that these s-fold blocking sets contain the disjoint union of a collection of s lines and/or Baer subplanes. To obtain these results, we extend results of Blokhuis–Storme–Szönyi on s-fold blocking sets in PG(2, q) to s-fold blocking sets having points to which a multiplicity is given. Then the results in PG(n, q), n ≥ 3, are obtained using projection arguments. The results of this article also improve results of Hamada and Helleseth on codes meeting the Griesmer bound.
    Original languageEnglish
    JournalDesigns, Codes and Cryptography
    Issue number1
    Pages (from-to)5-21
    Publication statusPublished - 2004

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