Related papers: Holst-like 2+1 Quantum Gravity with Toric Spatial …

This paper has been withdrawn by the author due to it contains some errors. A corrected treatment is presented in further publications of the author.

The paper has been withdrawn

This paper has been withdrawn.

This paper has been withdrawn by the author due to the appearence of enlarged version with one new author name more (hep-ph/0012293).

This paper has been withdrawn.

This paper has been withdrawn due to an incorrect analysis in Section 4.

The paper has been withdrawn by authors.

This paper has been withdrawn by the author(s). Please see arXiv:0711.3910 for revision.

This paper has been withdrawn

This paper has been withdrawn.

This paper has been withdrawn by the authors.

This paper has been withdrawn by the author(s)

This paper has been temprally withdrawn by the author

The paper has been withdrawn by the author.

To appear in proceedings of II Workshop on ``Constraints Theory and Quantisation Methods''Montepulciano (Siena) 1993} General discussion of the constraints of 2+1 gravity, with emphasis on two approaches, namely the second order and first…

This paper has been removed by arXiv administrators because it plagiarizes gr-qc/0410004, gr-qc/0603075, and others. This paper also has excessive overlap with the following papers also written by the authors or their collaborators:…

This paper has been withdrawn by the author, because it is now part of an enlarged version entitled "Time functions as utilities" arXiv:0909.0890

This paper is withdrawn.

This paper has been withdrawn by the author. It will be replaced, substantially modified, by sections of the author's completed PhD thesis.

A review is given of some classical and quantum aspects of 2+1 dimensional gravity.