Related papers: Fermat Curves and Brauer-Manin Obstructions

This paper has been withdrawn due to fundamental errors.

This paper has been withdrawn.

This paper has been withdrawn by the author due to a critical error in the proof of Theorem A pointed out by Burkhard Wilking.

This paper has been withdrawn by the authors, due a crucial error in Sec. 3.

The paper has been withdrawn by the author.

This paper has been withdrawn by the author, due a critical mistake on page 3.

This article has been withdrawn due to an error in a proof of the main result.

This paper has been withdrawn by the author due to imprecisions which must conduce to wrong results.

This paper has been withdrawn by the author due to a crucial errors.

This paper has been withdrawn due to an error, and no further revisions will be made.

This paper has been withdrawn by the author(s), due a mistake of factor 1/2.

This paper has been withdrawn

This paper has been withdrawn by the authors due to some fatal errors in the analysis.

This paper has been withdrawn

This paper has been withdrawn by the author.

The paper is withdrawn. The proof has an error and it requires a different approach.

This paper has been withdrawn by the author due to a crucial error in the proof of Lemma 2.2.

This paper has been withdrawn by the author, due to a crucial error in the proof of Lemma 3.1.

This paper has been withdrawn.

The paper was withdrawn by the author.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