Abstract
For each positive integer N, an automorphism with the Reidemeister number 2N of the discrete Heisenberg group is constructed; an example of determination of points in the unitary dual object being fixed with respect to the mapping induced by the group automorphism is given. For wreath products of finitely generated Abelian groups and the group of integers, it is proved that if the Reidemeister number of an arbitrary automorphism is finite, then it is equal to the number of fixed points of the induced mapping on a finite-dimensional part of the unitary dual object.
Similar content being viewed by others
References
A. L. Fel’shtyn, “The Reidemeister Number of any Aautomorphism of a Gromov Hyperbolic Group is Infinite,” Zapiski Nauch. Semin. POMI (Geometry and Topology, 6) 279, (2001) [in Russian].
D. Gonçalves and P. Wong, “Twisted Conjugacy Classes in Exponential Growth Groups,” Bull. London Math. Soc. 35(2), 261 (2003).
A. Fel’shtyn and D. Gonçalves, “Reidemeister Numbers of Automorphisms of Baumslag-Solitar Groups,” Algebra and Discrete Math. 3, 36 (2006).
D. Gonçalves and P. Wong, “Twisted Conjugacy Classes in Wreath Products,” Inter. J. Algebra and Comput. 16(2), 875 (2006).
A. Fel’shtyn and E. Troitsky, “Twisted Burnside Theorem,” Preprint MPIM2005-46 (Max-Planck-Institut für Mathematik, 2005).
J.-P. Serre, Linear Representations of Finite Groups, (Springer, 1977; Mir, Moscow, 1970).
A. Fel’shtyn and E. Troitsky, “A Twisted Burnside Theorem for Countable Groups and Reidemeister Numbers,” in: Proc. Workshop Noncommutative Geometry and Number Theory (Bonn, 2003), Ed. by K. Consani, M. Marcolli, and Yu. Manin, (Vieweg, Brunschweig, 2006), pp. 141–154.
A. Fel’shtyn, F. Indukaev, and E. Troitsky, “Twisted Burnside Theorem for Two-Step Torsion-Free Nilpotent Groups,” Preprint MPIM2005-45 (Max-Planck-Institut für Mathematik, 2005).
A. Fel’shtyn, E. Troitsky, and A. Vershik, “Twisted Burnside Theorem for Type II1 Groups: an Example,” Math. Res. Lett. 13(5–6), 719 (2006).
A. A. Kirillov, Elements of the Theory of Representations, (Nauka, Moscow, 1978; Springer, 1976).
A. O. Barut and R. Raczka, Theory of Group Representations and Applications, Vol. 2 (PWN, 1977; Moscow, Mir, 1980).
A. O. Barut and R. Raczka, Theory of Group Representations and Applications, Vol. 1 (PWN, 1977; Moscow, Mir, 1980).
B. Amberg, “Groups with Maximum Conditions,” Pacif. J. Math. 32(1), 9 (1970); http://projecteuclid.org.
Author information
Authors and Affiliations
Additional information
Original Russian Text © F.K. Indukaev, 2007, published in Vestnik Moskovskogo Universiteta, Matematika. Mekhanika, 2007, Vol. 62, No. 6, pp. 9–17.
About this article
Cite this article
Indukaev, F.K. Twisted burnside theory for the discrete Heisenberg group and for wreath products of some groups. Moscow Univ. Math. Bull. 62, 219–227 (2007). https://doi.org/10.3103/S0027132207060022
Received:
Issue Date:
DOI: https://doi.org/10.3103/S0027132207060022