Kelly's combinatorial lemma is a basic tool in the study of Ulam's reconstruction conjecture. A generalization in terms of a family of t-elements subsets of a v-element set was given by Pouzet. We consider a version of this generalization modulo a prime p. We give illustrations to graphs and tournaments.
机构:
Eotv Lorand Res Network, Alfred Reny Inst Math, Budapest, Hungary
Univ Szeged, Bolya Inst, Szeged, HungaryEotv Lorand Res Network, Alfred Reny Inst Math, Budapest, Hungary