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math.PR2023
Times of a branching process with immigration in varying environment attaining a fixed level
Hua-Ming Wang
Consider a branching process with immigration in varying environment. For let be the collection of times at which the po…
math.PR2023
Local time, upcrossing time and weak cutpoints of a spatially inhomogeneous random walk on the line
Hua-Ming Wang
In this paper, we study a transient spatially inhomogeneous random walk with asymptotically zero drifts on the lattice of the positive half line. We give criteria for the finitenes…