IIIIII#d（42）T=3#_D=0.1#sig_D=0.3#p=100##defgenerate_dend_paths（D0=1e6T=10dt=0.1n_paths=n_si:steps=int（Tdt）PyMC3..V[V=x_{au}th+e^{-rau}Phi（S_au）ight]]2..Laplace.ETF~pia~