Mean field games master equations with nonseparable Hamiltonians and displacement monotonicity

By Wilfrid Gangbo, Alpár R. Mészáros, Chenchen Mou, Jianfeng Zhang. Annals of Probability, 2021

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. In this manuscript, we propose a structural condition on non-separable Hamiltonians, which we term displacement monotonicity condition, to study second order mean field games master equations. A rate of dissipation of a bilinear form is brought to bear a global (in time) well-posedness theory, based on a priori uniform Lipschitz estimates on the solution in the measure variable. Displacement monotonicity being sometimes in dichotomy with the widely used Lasry-Lions monotonicity condition, the novelties of this work persist even when restricted to separable Hamiltonians.

Subfields: Applied Mathematics, Finance

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