  The creation of the inflationary brane universe in 5d bulk Einstein and
Einstein-Gauss-Bonnet gravity is considered. We demonstrate that emerging
universe is ambigious due to arbitrary function dependence of the junction
conditions (or freedom in the choice of boundary terms). We argue that some
fundamental physical principle (which may be related with AdS/CFT
correspondence) is necessary in order to fix the 4d geometry in unique way.
