Related papers: Space-bounded computation: quantum is better than …

This paper has been withdrawn by the authors due to a problem with *efficiently* predicting the large fourier coefficients. It is being reworked and will be resubmitted in the near future.

This paper has been withdrawn by the author(s), due to the existence of a much better paper in http://arxiv.org/abs/cs.CR/0207027

This paper has been withdrawn by the authors. It has been superseded by hep-th/0309154

This paper has been withdrawn by the author due to a error in attachment of source file.

This paper is incorrect, and has been withdrawn by the author.

This paper has been withdrawn by the author.

This paper has been withdrawn by the author.

The article has been withdrawn by the author.

This paper has been withdrawn by the author, since some results of the paper have been already obtained in [J.~Lewandowski, Class. Quantum Grav. 9 (1992), no. 10, L147--L151.]

This paper has been withdrawn.

This paper has been withdrawn due to an incorrect analysis in Section 4.

The paper has been withdrawn

This paper was withdrawn on 20.11.97.

This paper has been withdrawn by the author [arXiv admin].

This paper has been withdrawn by the author; see the much expanded, improved, and generalized version at arXiv:0811.2080.

There have been gaps found in the proofs. The paper is withdrawn until further notice.

This paper was withdrawn at the recommendation of the Cassini Radio Science Team.

The paper was withdrawn because of its significant overlap with a paper appeared recently.

This paper has been withdrawn by the author due to an error in an inequality in the proof of Theorem 1.1.

There have been comments on this paper which point out unclear motivation and definitions on noncommutative momentum introduced. Therefore, this paper is withdrawn by the author for more clear presentation.