Saint Petersburg Collaborators

Papers and Preprints

E. Sopkina On the sum of roots of a closed set, Zap. Nauchn. Sem. POMI, 289, 277-286 (2002). (English translation to appear in J. Math. Sci.)
V. Petrov Overgroups of Unitary Groups, To appear in K-Theory
A. Nenashev Elements of K_1 via the triple G-construction, preprint, Bielefeld, 1998
A. Nenashev lambda^2 on K_1 in terms of double short exact sequences, preprint, Bielefeld, 1999
A. Nenashev Categorical and simplicial constructions and dualization in algebraic K-theory, to appear in K-Theory
S. Gille, A. Nenashev Products on triangular Witt groups, preprint

Stepanov A. V. and Vavilov N. Length of commutators in classical-like groups over rings, preliminary version,
Stepanov A. V. Subgroups of a Chevalley group between two different rings, Announcement (2004)
Stepanov A. V. Nonstandard subgroups between E_n(R) and GL_n(A),, to appear in Algebra Colloquium
Stepanov A. V. and Sivatski A. S. On the Word Length of Commutators in Gl_n(R), K-Theory, 1999, vol.17, issue 4, pp. 295-302
Stepanov A. V. Some constructions of exact sequences. Zapiski nauchnyh seminarov POMI, vol. 272 (2000) (to be reprinted in : J. Rus. Math.)
Stepanov A. V. On the normal structure of the general linear group over a ring, Zapiski nauchnyh seminarov POMI, 1997, vol.236, (Russian) English translation to appear in J.Russ.Math.
Stepanov A. V. and Vavilov N. A. Decomposition of transvections: Theme with variations, K-Theory 19 (2000), 109 - 153

Sivatski A.S. On unimodular rows over polynomial rings. Algebra Colloquium, 7:2 (2000), p. 197-204