Related papers: Geometric Auslander criterion for flatness

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This paper has been withdrawn by the author(s), due an error in the proof.

They are possible other cases at first done not contemplate. This paper has been withdrawn by the author due to a crucial sign error in equation 1 page 4

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The paper is withdrawn by the author due to a recently discovered flaw in a basic proof.

This paper has been withdrawn by the author due to a crucial sign error in equation 2 and some mistake in Table 1 information. please let me for changing this information and updating this paper.

The paper is being withdrawn because of some theoretical inconsistencies.

This paper has been withdrawn by the author, due to the crucial mistake of the discussion in Sec IV.

This paper has been withdrawn by the authors due to an error in Section 7.

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This paper has been withdrawn by the author due to a gap in the proof of Lemma 3.4

This paper has been withdrawn because the new one gr-qc/0512095 includes all its results (as well as those in gr-qc/0511016) in a clearer way.

This paper has been withdrawn by the author, due to an error in the proof of lemma 7.4. However, numerical evidence strongly suggest that this lemma is true.

This paper has been withdrawn by the authors, due an error in Bethe Ansatz equations (16).

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The paper is withdrawn.