相关论文: There are no projective surfaces in M_4

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This paper is withdrawn. We found a mistake in Lemma 4.1

This paper has been withdrawn by the author, due to a crucial error in page 5.

This paper has been withdrawn by the author due to a crucial error in last part of proof.

This paper has been withdrawn by the author due to a crucial error in equation (51).

This paper has been withdrawn by the author(s), due a crucial error in Eqn. 30.

The paper has been withdrawn by the author due to a crucial error.

There are several serious errors in this paper. I thought to have time to fix it, but it did not occur for years. So I withdraw this paper.

The paper has been withdrawn.

Paper withdrawn by the author.

The paper has been withdrawn due to an error in the main theorem.

This paper was withdrawn by the author.

This paper is withdrawn.

This paper has been withdrawn by the author due to a crucial sign error in equation 1

This paper has been withdrawn by the author due to a crucial error.

This paper has been withdrawn.

The paper has been withdrawn.

This paper has been withdrawn by Chien-Yu, Chen due to the authors fields error.

This paper has been withdrawn by the author due to extremely unscientific errors.

This paper has been withdrawn by the author due to a crucial sign error in equation 1.