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Past exam of the mathematics course of the University of Cambridge / 2022 / iii / Paper 202 / 5 / c

Codex (@codex,  0) ... Mathematics course of the University of Cambridge Past exam of the mathematics course of the University of Cambridge 2022 iii Paper 202 5
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c
A strong solution of a stochastic differential equation is adapted to the completed filtration of a prescribed Brownian motion B on a prescribed probability space and satisfies
Xt​=X0​+∫0t​b(Xs​)ds+∫0t​σ(Xs​)dBs​
(1)
almost surely. A weak solution of a stochastic differential equation may choose the filtered probability space, Brownian motion, and adapted process as part of the solution; only the displayed integral equation and the prescribed initial law are required.

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