1. The problem statement, all variables and given/known data It is known that Euler's integral representation [PLAIN]http://img12.imageshack.us/img12/5578/euler.png [Broken] is valid for Re(c)>Re(b)>0 and |z|<1. The series (Gauss Formula) [PLAIN]http://img830.imageshack.us/img830/2365/gaussz.png [Broken] on the other hand converges for Re(c-b-a)>0. For what values of the parameters a, b and c is the Gauss Formula valid? (Think carefully) 3. The attempt at a solution Anyone help?