Preprint
Inserted: 14 feb 2024
Last Updated: 25 feb 2024
Year: 2024
Abstract:
We derive a first order optimality condition for a class of agent-based systems, as well as for their mean-field counterpart. A relevant difficulty of our analysis is that the state equation is formulated on possibly infinite-dimensional convex subsets of Banach spaces, as required by some problems in multi-population dynamics. Due to the lack of a linear structure and of local compactness, the usual tools of needle variations and linearisation procedures used to derive Pontryagin type conditions have to be generalised to the setting at hand. This is done by considering suitable notions of differentials and by a careful inspection of the underlying functional structures.
Keywords: Pontryagin Maximum Principle, mean field optimal control,, agent-based systems, differential equations on convex state spaces
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