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The contact between rough surfaces plays an important role in numerous situations of theoretical and practical interest. The present work deals with the problem of frictionless contact between the periodically wavy surfaces of two elastic half-spaces. To solve this problem, a numerical approach, which is reminiscent of the boundary element method, is proposed on the basis of the matrix inversion method...
. Phase diagrams exhibiting the extent of cooperation in an evolutionary snowdrift game implemented in different networks are studied in detail. We invoke two independent payoff parameters, unlike a single payoff often used in most previous works that restricts the two payoffs to vary in a correlated way. In addition to the phase transition points when a single payoff parameter is used, phase boundaries...
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