  On the basis of a renormalization group analysis of the kernel and of the
solutions of the BFKL equation with subleading corrections, we propose and
calculate a novel expansion of a properly defined effective eigenvalue
function. We argue that in this formulation the collinear properties of the
kernel are taken into account to all orders, and that the ensuing
next-to-leading truncation provides a much more stable estimate of hard Pomeron
and of resummed anomalous dimensions.
