Papers on Free Groups

1.      Pattern Recognition Approaches to Solving Combinatorial Problems in Free Groups (with R.M. Haralick and A.D. Miasnikov), Contemp. Math., 349, Amer. Math. Soc., Providence, RI, 2004, 197-213.

In this survey paper we present some pattern recognition techniques that can be used in studying free groups. As an illustration we apply these methods to Whitehead minimization problem.

2.      Whitehead method and Genetic Algorithms (with A.D. Miasnikov). Computational and experimental group theory, 89-114, Contemp. Math., 349, Amer. Math. Soc., Providence, RI, 2004.

We describe a genetic Whitehead's algorithm for finding minimal elements (elements of minimal length in automorphic orbits) in arbitrary free groups. The classical Whitehead's algorithm is extremely innefective for free groups of big ranks, but this genetic version of it works all right. Also we formulate several mathematical conjectures that came out of our experiments.

3.      One Variable Equations in free groups via context free languages (with R. Gilman). Computational and experimental group theory, 83-88, Contemp. Math., 349, Amer. Math. Soc., Providence, RI, 2004.

 

4.      Automorphic orbits in free groups (with V.Shpilrain). J. of Algebra, 269 (2003), no. 1, 18-27.

 

5.      Stallings foldings and subgroups of free groups (with I. Kapovich). J. of Algebra, 248 (2002), 608-668.

 

6.      Malnormality is decidable in free groups (with G.Baumslag and V.Remeslennikov). Internat. Journal Algebra Comput. 9 (1999), no.6, 687-692.