We study the existence, computation, and quality of (approximate) pure Nash equilibria in atomic (network) congestion games with increasing and decreasing resource cost functions. For weighted congestion games with polynomial and general increasing resource cost functions, we give super-constant lower bounds on the non-existence of approximate equilibria. For network games with decreasing cost functions, we bound the Price of Stability of broadcast games. Finally, we give an algorithm solving the two disjoint shortest path problem in undirected graphs with non-negative edge lengths.
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We study the existence, computation, and quality of (approximate) pure Nash equilibria in atomic (network) congestion games with increasing and decreasing resource cost functions. For weighted congestion games with polynomial and general increasing resource cost functions, we give super-constant lower bounds on the non-existence of approximate equilibria. For network games with decreasing cost functions, we bound the Price of Stability of broadcast games. Finally, we give an algorithm solving th...
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