Academic Editor: Vicentiu D. Radulescu
Copyright © 2010 Fengping Yao. This is an open access article distributed under the
Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
We show the global regularity estimates for the following parabolic polyharmonic equation
under proper conditions. Moreover, it will be verified that these conditions are
necessary for the simplest heat equation in .