Related papers: Minimizing Polynomials via Sum of Squares over the…

This paper has been withdrawn due to a crucial theoretical and experimental error.

The paper is withdrawn by the authors and replaced be an improved and extended version arxiv: 0812.2968

This paper has been withdrawn by the author due to similarity to the author's other paper

This paper has been withdrawn by the author due to an error in the main proof (thanks to Carlos D'Andrea)

This paper is currently withdrawn and is being revised by the authors.

This paper has been withdrawn by the author.

This paper has been withdrawn by the authors pending corrections.

This paper has been withdrawn by the author due to a crucial argument error at p.10.

This paper has been withdrawn because of serious errors.

This paper has been withdrawn.

This paper is withdrawn. The current main theorem can be proved by using a simple field theory. The main theorem is to placed by another theorem, shortly.

This paper has been withdrawn by the authors due to a more research needed to estimate $h^{*}_{n}(b)$ which really should be written as $h^{*}_{n}(b,A)$ for $b\in \Gamma (t)$.

This paper has been withdrawn by the author due to an error in the proof of Proposition 4.8.

This paper has been withdrawn by the author

This paper has been withdrawn by the author

This paper has been withdrawn by the authors, due a gap in the proof of the main Theorem.

This paper has been withdrawn by the author, due to a significant error in section 4.3.1.

This paper has been withdrawn by the authors, due to the solution already existing in the literature.

This paper has been withdrawn by the author, because a better treatment is given in the author's Phd. thesis (Sections 3.4.6 and 4.4), now available on the arxiv.

This paper has been withdrawn by the author, due to errors in Groebner basis calculations in the cases of five and six dimensional groups.