期刊
MATHEMATICAL MODELS & METHODS IN APPLIED SCIENCES
卷 19, 期 -, 页码 1391-1404出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0218202509003851
关键词
Flocking; hierarchical leadership; unconditional convergence
Very recently, a model for flocking was introduced by Cucker and Smale together with a proof of convergence. This proof established unconditional convergence to a common velocity provided the interaction between agents was strong enough and conditional convergence otherwise. The strength of the interaction is measured by a parameter beta >= 0 and the critical value at which unconditional convergence stops holding is beta = 1/2. This model was extended by Shen to allow for a hierarchical leadership structure among the agents and similar convergence results were proved. But, for discrete time, unconditional convergence was proved only for beta < 1/2k (k being the number of agents). In this note we improve on this result showing that unconditional convergence holds indeed for beta < 1/2.
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