Im working on a Lemma 10.8 in the Book "Numerical Solution of Stochastic Differential Equations by Kloeden And Platen" I have been stuck on one point. Can somebody help me to understand how he moved to second last and the last line in equation (8.3) in the second picture that I have added. Moreover Im adding the picture for Lemma 5.7.3 as well which has been used in the proof.Kindly help me in this regard
Thanks in anticipation.
2026-03-27 04:22:32.1774585352
Multipe Ito Integrals
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