Abstract
The C*-simplicity of n-periodic products is proved for a large class of groups. In particular, the n-periodic products of any finite or cyclic groups (including the free Burnside groups) are C*-simple. Continuum-many nonisomorphic 3-generated nonsimple C*-simple groups are constructed in each of which the identity x n = 1 holds, where n ≥ 1003 is any odd number. The problem of the existence of C*-simple groups without free subgroups of rank 2 was posed by de la Harpe in 2007.
Similar content being viewed by others
References
P. de laHarpe, “On simplicity of reducedC*-algebras of groups,” Bull. Lond. Math. Soc. 39 (1), 1–26 (2007).
M. M. Day, “Amenable semigroups,” Illinois J.Math. 1, 509–544 (1957).
E. Breuillard, M. Kalantar, M. Kennedy, and N. Ozawa, C*-Simplicity and the Unique Trace Property for Discrete Groups, arXiv: 1410.2518 (2014).
A. Le Boudec, Discrete Groups That are Not C*-Simple, arXiv: 1507.03452 (2015).
R. T. Powers, “Simplicity of the C*-algebra associated with the free group on two generators,” Duke Math. J. 42, 151–156 (1975).
W. L. Paschke and N. Salinas, “C*-algebras associated with free products of groups,” Pacific J.Math. 82 (1), 211–221 (1979).
M. R. Bridson and P. de la Harp, “Mapping class groups and outer automorphism groups of free groups are C*-simple,” J. Funct. Anal. 212 (1), 195–205 (2004).
G. Arzhantseva and A. Minasyan, “Relatively hyperbolic groups are C*-simple,” J. Funct. Anal. 243 (1), 345–351 (2007).
A. Yu. Olshanskii and D. V. Osin, “C*-Simple groups without free subgroups,” Groups Geom. Dyn. 8 (3), 933–983 (2014).
S. I. Adyan, “Random walks on free periodic groups,” Izv. Akad. Nauk SSSR Ser. Mat. 46 (6), 1139–1149 (1982) [Math. USSR-Izv. 21 (3), 425–434 (1983)].
V. S. Atabekyan, “On subgroups of free Burnside groups of odd exponent n = 1003,” Izv. Ross. Akad. Nauk Ser. Mat. 73 (5), 3–36 (2009) [Izv.Math. 73 (5), 861–892 (2009)].
S. I. Adyan, “Periodic products of groups,” in Trudy Math. Inst. Steklov, vol. 142: Number Theory, Mathematical Analysis, and Their Applications (1976), pp. 3–21 [Proc. Steklov Inst. Math. 142, 1–19 (1979)].
S. I. Adyan, Burnside’s Problem and Identities in Groups (Nauka, Moscow, 1975) [in Russian].
S. I. Adyan, “New estimates of odd exponents in infinite Burnside groups,” in Trudy Math. Inst. Steklov, vol. 289: Selected Questions of Mathematics and Mechanics, Collection of papers on the occasion of the 150th birthday of Academician Vladimir Andreevich Steklov (MIAN, Moscow, 2015), pp. 31–82 [Proc. Steklov Inst.Math. 289, 33–71 (2015)].
S. I. Adyan and V. S. Atabekyan, “Characteristic properties and uniform non-amenability of n-periodic products of groups,” Izv. Ross. Akad. Nauk Ser. Mat. 79 (6), 3–17 (2015) [Izv. Math. 79 (6), 1097–1110 (2015)].
V. S. Atabekyan, “Uniform nonamenability of subgroups of free Burnside groups of odd period,” Mat. Zametki 85 (4), 516–523 (2009) [Math. Notes 85 (3–4), 496–502 (2009)].
S. I. Adyan, “On the simplicity of periodic products of groups,” Dokl. Akad. Nauk SSSR 241 (4), 745–748 (1978) [SovietMath. Dokl. 19, 910–913 (1978)].
S. I. Adyan and I. G. Lysenok, “On groups all of whose proper subgroups are finite cyclic,” Izv. Akad. Nauk SSSR Ser. Mat. 55 (5), 933–990 (1991) [Math. USSR-Izv. 39 (2), 905–957 (1992)].
V. S. Atabekyan, “On periodic groups of odd period n = 1003,” Mat. Zametki 82 (4), 495–500 (2007) [Math. Notes 82 (3–4), 443–447 (2007)].
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © S. I. Adyan, V. S. Atabekyan, 2016, published in Matematicheskie Zametki, 2016, Vol. 99, No. 5, pp. 643–648.
Rights and permissions
About this article
Cite this article
Adyan, S.I., Atabekyan, V.S. C*-simplicity of n-periodic products. Math Notes 99, 631–635 (2016). https://doi.org/10.1134/S0001434616050011
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0001434616050011