Λ-Wright–Fisher processes provide a robust framework to describe the type-frequency
evolution of an infinite neutral population. We add a polynomial drift to the corresponding …

Consider a two-type Moran population of size N with selection and mutation, where the
selective advantage of the fit individuals is amplified at extreme environmental conditions …

For the Moran model with strong or moderately strong selection we prove that the
fluctuations around the deterministic limit of the line counting process of the ancestral …

We establish connections between the absorption probabilities of a class of birth-death
processes with killing, and the stationary tail distributions of a related class of birth-death …

Analysing survival or fixation probabilities for a beneficial allele is a prominent task in the
field of theoretical population genetics. Haldane's asymptotics is an approximation for the …