Contractors for flows
نویسندگان
چکیده
We answer a question raised by Lovász and B. Szegedy [Contractors and connectors in graph algebras, J. Graph Theory 60:1 (2009)] asking for a contractor for the graph parameter counting the number of B-flows of a graph, where B is a subset of a finite Abelian group closed under inverses. We prove our main result using the duality between flows and tensions and finite Fourier analysis.
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ورودعنوان ژورنال:
- Electronic Notes in Discrete Mathematics
دوره 38 شماره
صفحات -
تاریخ انتشار 2011