Freedman's classification and the Q-form hypothesis (Ex)

Check that the Freedman's classification of simply-connected 4-manifolds entails that the $Q$$<wikitex>; Check that the Freedman's classification of simply-connected 4-manifolds entails that the $Q$-form hypothesis holds for these manifolds. </wikitex> [[Category:Exercises]] [[Category:Exercises without solution]]Q$-form hypothesis holds for these manifolds.