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2 votes
1 answer
191 views

How can we derive this lower bound of a special cut in a graph?

I have another question about this paper. There the authors prove a special version of the maximal flow-minimal cut theorem for uniform exactly-$k$-splittable $s$-$t$-flows. They define the cut in thi …
5 votes
1 answer
221 views

Finding the perfomance ratio in a multicommodity-flow

I am reading the following paper about multicommodity-flows. I have not a very strong background in graph theory and hence most of my question regarding the paper are fundamental. My questions are abo …