相关论文: The 2-dimension series of the just-nonsolvable BSV…

This paper was withdrawn by the authors. The mistake in math.AG/0209223 affects also this paper.

This paper has been withdrawn by the author, due to errors in Groebner basis calculations in the cases of five and six dimensional groups.

This paper has been withdrawn due to same as quant-ph/9908068

This paper has been withdrawn by the author; see the much expanded, improved, and generalized version at arXiv:0811.2080.

The paper is withdrawn.

Withdrawn due to extensions and submission as another paper.

The paper has been withdrawn.

The paper has been withdrawn because the proof of part (b) of the main theorem is incomplete.

This paper has been withdrawn by the authors. Significantly revised versions of the results of this paper are now available in arXiv:0707.0487v2 and arXiv:0808.3169v1.

This paper has been withdrawn by the author, since it is now a part of "Classical aspects of lightlike dimensional reduction" Class.Quant.Grav.23:7085-7110, 2006, gr-qc/0610011

This paper has been withdrawn by the author, due an error in the proof of Proposion 2.13.

A modified version of this paper is under process and with a new title and abstract. Hence, this version of the article is completely withdrawn.

This paper has been withdrawn by the author due to an error in the proof of Proposition 4.8.

This paper has been withdrawn

This paper has been superseded by math.AG/0510287 and withdrawn by the author.

This paper has been withdrawn.

This paper has been withdrawn. The results are now part of math.GR/9804072.

This paper has been withdrawn by the author. The conjecture follows from the finiteness of group von Neumann algebras.

This paper is withdrawn because its results have been previously reported in arxiv hep-th/0507200.

This paper was withdrawn by the authors because it has been supplanted by gr-qc/0311007 and gr-qc/0311038.