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math.CO2015
On 1-sum flows in undirected graphs
S. Akbari, S. Friedland, K. Markström +1
Let G=(V,E) be a simple undirected graph. For a given set L of the real line, a function omega from E to L is called an L-flow. Given a vector gamma whose coordinates are indexed b…
math.CO2011
A note on zero-sum 5-flows in regular graphs
S. Akbari, N. Ghareghani, G. B. Khosrovshahi +1
Let be a graph. A zero-sum flow in is an assignment of nonzero real number to the edges such that the sum of the values of all edges incident with each vertex is zero. Let…