A PROBABILISTIC APROACH TO THE MONGE-AMPERE EQUATION
Abstract
THE SUBJECT WE ARE DEALING WITH CAN BE DIVIDED AS FOLLOWS: A) POSSIBILITY OF STOCHASTIC REPRESENTATION OF THE GENERALISED SOLUTION OF THE REAL MONGE-AMPERE EQUATION MU=F>0 K D, K=Φ ON ΘD, D C IRD OPEN-BOUNDED CONVEX. PARTLY IN PARALLEL TO THE WORK BY B. GAVEAN, WHO TREATED THE COMPLEX CASE, GENERAL RESULTS ARE OBTAINED. SPECIFICALLY THE SOLUTION CAN BE STOCHASTICALLY REPRESENTED IF O<F E L (D), Φ E C (ΘD), D C IRD STRICTLY CONVEX (ΘD NOT NECESSARILLY SMOOTH). PARTICULARLY IF Φ=0 A BARRIER CONDITION ON ΘD IS SUFFICIENT. IN THIS CONTEXT A SIMPLIFIEDPROOF OF KRYLER'S INEQUALITY IS OBTAINED. B) PROBABILISTIC DEMONSTRATION OF THE EXISTENCE OF THE SOLUTION OF THE MONGE- AMPERE EQUATION (IN THE GENERALISED SENSE) OPTIMAL STOCHASTIC CONTROL TECHNIQUES IN CONJUNCTION WITH A STOCHASTIC VERSION OF IDEAS DEVELOPED BY P.L. LIONS CAN ASSURE A PURELY PROBABILISTIC DEMONSTRATION OF EXISTENCE OF THE SOLUTION. THE METHOD AFTER MINOR CHANGES, CAN ALSO APPLY TO THE COMPLEX CASE. AN E-OPTIMAL CONTROL CAN B ...
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