%0 Journal Article %T On a generalization of Kelly's combinatorial lemma %A Aymen Ben Amira %A Jamel Dammak %A Hamza Si Kaddour %J Mathematics %D 2013 %I arXiv %X 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. %U http://arxiv.org/abs/1302.4249v1