On mappings, orthogonally additive in the Birkhoff-James sense.
Pythagorean orthogonality and additive mappings.
Spreading mechanisms of cooperation for the evolutionary Prisoner's Dilemma games
We survey several mechanisms supporting the maintenance of cooperation for evolutionary Prisoner's Dilemma games. In these models players are located on the sites of a lattice or graph and they can follow one of the pure strategies: cooperation (C) or defection (D). Their total income comes from Prisoner's Dilemma games with their neighbors. We discuss the consequences of different evolutionary rules determining the time-dependence of the strategy distribution and compare the results of spreading...
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