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Some Fine-Tuning for Dominant Diagonal Matrices
(1988-07)
Given a linear system Ax=b, where A is a dominant diagonal matrix with positive diagonals and non-positive off-diagonals, but b as both positive and negative components, necessary and sufficient conditions on bj are derived ...
The spread and persistence of infectious diseases in structured populations
(Elsevier, 1988)
A basic assumption of many epidemic models is that populations are composed of a homogeneous group of randomly mixing individuals. This is not a realistic assumption. Most actual populations are divided into a number of ...