1 research outputs found
Cofinality of normal ideals on P_\kappa(\lambda), I
Given an ordinal delta <= lambda and a cardinal theta <= kappa, an ideal J on
P_kappa(lambda) is said to be [delta]^{<theta}-normal if given B_e in J for e
in P_theta(delta), the set of all a in P_kappa(lambda) such that a in B_e for
some e in P_{|a cap theta|}(a cap delta) lies in J. We give necessary and
sufficient conditions for the existence of such ideals and we describe the
least one and we compute its cofinality