The helices and foundations of helices of exceptional
bundles on
have been defined by A.L. Gorodentsev and A.N. Rudakov. D.Y.
Nogin found some relations among the invariants of the exceptional bundles
in foundations of helices (*E*_{0},*E*_{1},*E*_{2},*E*_{3}).
The main result of this paper is that the only relations among the squares
of the ranks of the *E _{i}*'s and their invariants , ,
(also defined here) can be deduced from some "obvious" relations. To prove
this an algebraic projective variety