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Quantitative Finance · Glosario

¿Qué es Brownian bridge?

Definition 2.13 Quantitative Methods · Capítulo 2 — Brownian Motion

A Brownian bridge from xx to yy on [t0,t1][t_0, t_1] is a Brownian motion conditioned on Wt0=xW_{t_0} = x and Wt1=yW_{t_1} = y; from 00 to 00 on [0,T][0, T] it can be written Wt−(t/T)WTW_t - (t/T)W_T, a centred Gaussian process with covariance s(T−t)/Ts(T - t)/T for s≤ts \le t.

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