Geodesic
The eigenvalue method for cross $t$-intersecting families
Journal of Algebraic Combinatorics, Tome 38 (2013) no. 3, pp. 653-662.

Voir la notice de l'article provenant de la source Electronic Library of Mathematics

Summary: We show that the Erdős-Ko-Rado inequality for t-intersecting families of k-element subsets of an n-element set can be easily extended to an inequality for cross t-intersecting families by using the eigenvalue method if n is relatively large depending on k and t. The same method applies to the case of t-intersecting families of k-dimensional subspaces of an n-dimensional vector space over a finite field.
Keywords: cross intersecting family, eigenvalue method, hoffman-delsarte bound 
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     author = {Tokushige, Norihide},
     title = {The eigenvalue method for cross $t$-intersecting families},
     journal = {Journal of Algebraic Combinatorics},
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     publisher = {mathdoc},
     volume = {38},
     number = {3},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2013__38_3_a3/}
}
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Tokushige, Norihide. The eigenvalue method for cross $t$-intersecting families. Journal of Algebraic Combinatorics, Tome 38 (2013) no. 3, pp. 653-662. http://geodesic.mathdoc.fr/item/JAC_2013__38_3_a3/