Research output: Contribution to journal › Article › peer-review
Catalogue of the Star graph eigenvalue multiplicities. / Khomyakova, Ekaterina; Konstantinova, Elena V.
In: Arabian Journal of Mathematics, Vol. 10, No. 1, 04.2021, p. 115-119.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Catalogue of the Star graph eigenvalue multiplicities
AU - Khomyakova, Ekaterina
AU - Konstantinova, Elena V.
N1 - Publisher Copyright: © 2019, The Author(s).
PY - 2021/4
Y1 - 2021/4
N2 - The Star graph Sn, n⩾ 2 , is the Cayley graph over the symmetric group Sym n generated by transpositions (1i),2⩽i⩽n. This set of transpositions plays an important role in the representation theory of the symmetric group. The spectrum of Sn contains all integers from - (n- 1) to n- 1 , and also zero for n⩾ 4. In this paper we observe methods for getting explicit formulas of eigenvalue multiplicities in the Star graphs Sn, present such formulas for the eigenvalues ± (n- k) , where 2 ⩽ k⩽ 12 , and finally collect computational results of all eigenvalue multiplicities for n⩽ 50 in the catalogue.
AB - The Star graph Sn, n⩾ 2 , is the Cayley graph over the symmetric group Sym n generated by transpositions (1i),2⩽i⩽n. This set of transpositions plays an important role in the representation theory of the symmetric group. The spectrum of Sn contains all integers from - (n- 1) to n- 1 , and also zero for n⩾ 4. In this paper we observe methods for getting explicit formulas of eigenvalue multiplicities in the Star graphs Sn, present such formulas for the eigenvalues ± (n- k) , where 2 ⩽ k⩽ 12 , and finally collect computational results of all eigenvalue multiplicities for n⩽ 50 in the catalogue.
KW - CAYLEY-GRAPHS
KW - SPECTRA
UR - http://www.scopus.com/inward/record.url?scp=85075474882&partnerID=8YFLogxK
U2 - 10.1007/s40065-019-00271-z
DO - 10.1007/s40065-019-00271-z
M3 - Article
AN - SCOPUS:85075474882
VL - 10
SP - 115
EP - 119
JO - Arabian Journal of Mathematics
JF - Arabian Journal of Mathematics
SN - 2193-5343
IS - 1
ER -
ID: 22404582