Stephen Montgomery-Smith
**Abstract:**

This paper gives another version of results due to Raugel and Sell, and
similar results due to Moise, Temam and Ziane, that state the following:
the solution of the Navier-Stokes equation on a thin three-dimensional
domain with periodic boundary conditions has global regularity, as long as
there is some control on the size of the initial data and the forcing
term, where the control is larger than that obtainable via "small
data" estimates. The approach taken is to consider the three-dimensional
equation as a perturbation of the equation when the vector field does
not depend upon the coordinate in the thin direction.

Submitted November 19, 1998. Published April 14, 1999.

Math Subject Classification: 35Q30, 76D05, 35B65.

Key Words: Navier-Stokes equation, thin domain.

An addendum was attached on July 8, 1999. See last page of this article.

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Stephen Montgomery-Smith Math. Dept., University of Missouri Columbia, MO 65211, USA email: stephen@math.missouri.edu http://math.missouri.edu/~stephen |

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