May 29, 2012
Admin note: withdrawn by arXiv admin because of the use of a pseudonym, in violation of arXiv policy.
May 17, 2005
The paper is withdrawn.
October 29, 2001
This paper has been withdrawn by the author.
February 4, 2004
This paper has been withdrawn by the author due to a crucial argument error at p.10.
September 23, 2010
Major mistake. The paper has been withdrawn.
April 20, 2008
A non-zero constant Jacobian polynomial maps $F=(P,Q)$ of $\mathbb{C}^2$ is invertible if $P$ and $Q$ are rational polynomials.
January 14, 2011
This paper has been withdrawn by the author due a few mistakes in the paper.
December 17, 2007
This paper has been withdrawn by the author.
July 9, 2005
The paper was withdrawn by the author. It contained various errors.
November 21, 2007
This paper has been withdrawn by the author due to some errors.