On one control problem with disturbance and vectograms depending linearly on given sets

A control problem with a given end time is considered, in which the control vectograms and disturbance depend linearly on the given convex compact sets. A multivalued mapping of the phase space of the control problem to the linear normed space E is given. The goal of constructing a control is that at the end of the control process the fixed vector of the space E belongs to the image of the multivalued mapping for any admissible realization of the disturbance. A stable bridge is defined in terms of multivalued functions. The presented procedure constructs, according to a given multivalued function which is a stable bridge, a control that solves the problem. Explicit formulas are obtained that determine a stable bridge in the considered control problem. Conditions are found under which the constructed stable bridge is maximal. Some problems of group pursuit can be reduced to the considered control problem with disturbance. The article provides such an example.

The Bulghar Region as a “Land of Ignorance”: Anti-Colonial Discourse in Khvārazmian Connectivity

Hagiographic sources from nineteenth-century Inner Russia and Khvārazm indicate the existence of a cluster of Muslims opposed to the state-supported Islamic institutions of the Russian Empire. Many Muslim scholars of the period did not accord the Volga-Ural region the status of an ‘abode of Islam,’ as they considered it to be a ‘land of ignorance.’ This paper examines the significance attached by Muslims of Inner Russia to the pious rhetoric of resettlement from a ‘land of ignorance’ to the ‘abode of Islam’. I argue that the opposition to the already well-established imperial structures in the Volga-Urals resulted in the formation of a powerful migrant community near Urgench, Khvārazm, that used the Naqshbandiya-Mojaddediya Sufi networks as a stable bridge to home.