<t>Okmore precisely here is my pb: F1 and F2 are in fact CMS swap rates.Say F1 is the CMS30Y and F2 is the CMS2Y.1) If I understand well, if T is ten year, F1(T) must be the CMS30Y that starts is ten years.2) Now, what is Call(F1(T),x1 - 1pb,Sig1,T) ?? To me, this call on F1(T) is a Caplet, which ma...