Title of article :
How many ’s are there in ?
Author/Authors :
Ne?et?il، نويسنده , , Jaroslav and Ossona de Mendez، نويسنده , , Patrice، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Abstract :
We prove that the asymptotic logarithmic density of copies of a graph F in the graphs of a nowhere dense class C is integral and we determine the range of its possible values. This leads to a generalization of the trichotomy theorem of Nešetřil and Ossona de Mendez (2011) [18] and to a notion of the degree of freedom of a graph F in a class C . This provides yet another formulation of the somewhere dense–nowhere dense classification. We obtain a structural result concerning the asymptotic shape of graphs with given degree of freedom.
Journal title :
European Journal of Combinatorics
Journal title :
European Journal of Combinatorics