IJAM: Volume 37, No. 5 (2024)

DOI: 10.12732/ijam.v37i5.4

 

IRREDUCIBLE REPRESENTATIONS

OF THE GROUP OF CONJUGATING

AUTOMORPHISMS OF A FREE GROUP

 

Mohamad N. Nasser  1, Rayane G. Abou Nasser Al Yaf  2,

Mohammad N. Abdulrahim  3,§

 

1,2,3  Department of Mathematics and Computer Science

Beirut Arab University

P.O. Box 11-5020, Beirut, LEBANON

 

 

Abstract.  As E. Formanek has characterized low dimensional representations of the braid group

Bn, we extend these representations to the group of conjugating automorphisms Cn, when n \geq 5. We then give a classification for irreducible representations of Cn in dimensions of at most

n-3. Next, we determine representations of Cn in dimension n-1 when each of the restrictions to the symmetric group Sn and the braid group Bn are irreducible.

 

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How to cite this paper?
DOI: 10.12732/ijam.v3
7i5.4
Source: 
International Journal of Applied Mathematics
ISSN printed version: 1311-1728
ISSN on-line version: 1314-8060
Year: 202
4
Volume: 3
7
Issue: 5

References

 

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[7] R. Rasala, On the minimal degrees of characters of Sn, Journal of Algebra 45, No 1 (1977), 132-181.

[8] A. Savushkina, On the group of conjugating automorphisms of a free group, Mathematical Notes, 60, No 1 (1996), 68-80.

[9] E. Stein, J. Birman, J. Mather et al., Braids, Links, and Mapping Class Groups, Princeton University Press, 82 (1974).

[10] I. Sysoeva, Dimension n representations of the braid group on n strings, Journal of Algebra, 243, No 2 (2001), 518-538.

[11] I. Sysoeva, Irreducible representations of Braid group Bn of dimension n + 1, Journal of Group Theory, 24, No 1 (2021), 39-78.

[12] D. Tong, S. Yang and Z. Ma, A new class of representations of Braid groups, Comm. Theoret. Phys., 26, No 4 (1996), 483-486.

 

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