Related papers: Jet schemes, invariant chiral differential operato…

This paper has been withdrawn by the authors. Our basic argument on the gauge invariance presented in this paper cannot withstand the criticism which has been drawn to our attention by several colleagues.

This paper has been withdrawn by the author due to an error in the proof.

This paper has been withdrawn by the author due to a crucial error in the submission action.

This paper has been withdrawn due to its publication

This paper has been withdrawn by the author because Lemma 3 is incorrect. This mistake is crucial in this paper.

This paper has been withdrawn by the author due to a crucial sign error in equation 1.

This paper is withdrawn due to some gaps in the proof

This paper has been withdrawn by the author due to a critical error in the proof of Theorem A pointed out by Burkhard Wilking.

This paper has been withdrawn by the author due to an error in the proof of Proposition 4.8.

This paper has been retracted.

The paper has been withdrawn.

This paper has been withdrawn due to errors in the analysis of data with Carrier Access Rate control and statistical methodologies.

This paper has been withdrawn by the author due to a crucial errors.

This paper has been withdrawn

This paper has been withdrawn by the authors, because the authors have second thought that the new ideas in this paper are better to be contained in another paper.

The paper was withdrawn by the author. It contained various errors.

This paper has been withdrawn by the author due to a crucial sign error in equation 1

This paper is withdrawn because of an error in Lemma 3.1

This paper was withdrawn by arXiv administrators. It is an erroneous duplicate submission of math.NA/0405095.

The paper is being withdrawn because of some theoretical inconsistencies.