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- W2574288841 abstract "In this paper we provide a purely combinatorial proof of the Friendship Theorem, which has been first proven by P. Erdős et al. by using also algebraic methods. Moreover, we generalize this theorem in a natural way, assuming that every pair of nodes occupies l ≥ 2 common neighbors. We prove that every graph, which satisfies this generalized l-friendship condition, is a regular graph." @default.
- W2574288841 created "2017-01-26" @default.
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- W2574288841 date "2008-01-01" @default.
- W2574288841 modified "2023-09-27" @default.
- W2574288841 title "The friendship problem on graphs." @default.
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