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For random growing networks, Barabás and Albert proposed a kind of model in Barabás et al. [Physica A 272 (1999) 173], i.e. model A. In this paper, for model A, we give the differential format of master equation of degree distribution and obtain its analytical solution. The obtained result P(k,t) is the time evolution of degree distribution. P(k,t) is composed of two terms. At given finite time, one...
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