EN
We define the space of trajectories of a doubly stochastic operator on L¹(X,μ) as a shift space $(X^{ℕ},ν,σ)$, where ν is a probability measure defined as in the Ionescu-Tulcea theorem and σ is the shift transformation. We study connections between the entropy of a doubly stochastic operator and the entropy of the shift on the space of trajectories of this operator.