An example of non-coformal classifying space with rational H(2)-structure

Abstract

Let Baut_1X and Baut_1p be the Dold-Lashof classifying spaces of a space X and a fibration p:X --> Y, respectively. In this paper, we give an example that there exists a fibration Xi such that Baut_1X and Baut_1p are not coformal and are rational H(2)-spaces.