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93 papers · 1 filter
Integrating neighborhoods in the evaluation of fitness promotes cooperation in the spatial prisoner's dilemma game
Zhen Wang, Wen-Bo Du, Xian-Bin Cao +1
A fundamental question of human society is the evolution of cooperation. Many previous studies explored this question via setting spatial background, where players obtain their pay…
The generalized connectivity of complete bipartite graphs
Shasha Li, Wei Li, Xueliang Li
Let be a nontrivial connected graph of order , and an integer with . For a set of vertices of , let denote the maximum number of…
Rainbow connection numbers of complementary graphs
Xueliang Li, Yuefang Sun
A path in an edge-colored graph, where adjacent edges may be colored the same, is a rainbow path if no two edges of it are colored the same. A nontrivial connected graph is rai…
First Observation of the Decays chi_{cJ} -> pi^0 pi^0 pi^0 pi^0
BESIII Collaboration
We present a study of the P-wave spin -triplet charmonium chi_{cJ} decays (J=0,1,2) into pi^0 pi^0 pi^0 pi^0. The analysis is based on 106 million \psiprime decays recorded with th…
Confirmation of the X(1835) and observation of the resonances X(2120) and X(2370) in J/psi->gamma pi^+pi^-eta'
BESIII Collaboration
With a sample of (225.2\pm2.8)*10^{6} J/psi events registered in the BESIII detector, J/psi->gamma pi^+ pi^- eta' is studied using two eta' decay modes: eta'->pi^+ pi^- eta and eta…
Bulk viscous cosmology: unified dark matter
Xu Dou, Xin-He Meng
The bulk viscosity is introduced to model unified dark matter. The viscous unified model assumes the universe is filled with a single fluid with the bulk viscosity. We review the g…