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# Parameters Identification in Population Dynamics Problem

Volume 13, Number 2 (2012), 81 - 99

## Parameters Identification in Population Dynamics Problem

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### Abstract

We are interested in the identification of parameters in a problem of pollution modeled by a population dynamics problem. We use the notion of sentinel introduced by O.Nakoulima [13]. We prove the existence of such sentinels by solving a problem of null-controllability with constraint on the control. The key of our results is an observability inequality of Carleman type adapted to the constraint.