A stochastic model for AIDS transmission is presented in this paper. The disease contact rate is assumed as a stochastic process instead of a constant becau
In this paper, a singularly perturbed ordinary differential problem with discontinuous coefficient of the first space derivative is considered. The problem
A phylogenetic tree was constructed by sequencing rbcL genes of 33 species representing 19 genera of Ranunculaceae, and three related species, Mahonia beale