Related papers: Ambiguous ideal classes and ambiguous ideals

This paper has been withdrawn.

This paper has been withdrawn by the author, since one of the key results duplicates existing work, as pointed out by a reader. I am currently revising the manuscript.

This paper has been withdrawn due to an incorrect proof.

This paper has been withdrawn by the authors owing to a mistake in the proof of the basic lemma.

This paper has been withdrawn. The authors realized that the obtained results were not new.

This paper has been withdrawn.

This paper has been withdrawn by the author.

This paper has been withdrawn by the authors due to essential errors in Theorem 5.6.

This paper has been withdrawn by the author. There is an error on page 3 in the last inequality before Lemma 1.1.

This paper has been withdrawn by the author due to imprecisions which must conduce to wrong results.

This paper has been withdrawn by the author due to a crucial error.

The paper was removed.

This paper has been withdrawn due to crucial erros in equations (24)--(31).

This paper has been withdrawn by the author.

This paper has been withdrawn by the author due to a crucial error related with the consideration of regular points

This paper has been withdrawn.

This paper has been withdrawn by the author due to rewritting and skipping crucial sign errors.

This paper has been withdrawn.

This paper has been withdrawn by the author, due a crucial error in the optimization. For the last one month I have been trying to remove the error, but it seems to take a lot of time so I decided to withdraw this paper for the moment.

This paper was withdrawn by the author.