Research output: Contribution to journal › Article › peer-review
Subgroups of minimal index in polynomial time. / Skresanov, Saveliy V.
In: Journal of Algebra and its Applications, Vol. 19, No. 1, 2050010, 01.01.2020.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Subgroups of minimal index in polynomial time
AU - Skresanov, Saveliy V.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - By applying an old result of Y. Berkovich, we provide a polynomial-time algorithm for computing the minimal possible index of a proper subgroup of a finite permutation group G. Moreover, we find that subgroup explicitly and within the same time if G is given by a Cayley table. As a corollary, we get an algorithm for testing whether or not a finite permutation group acts on a tree non-trivially.
AB - By applying an old result of Y. Berkovich, we provide a polynomial-time algorithm for computing the minimal possible index of a proper subgroup of a finite permutation group G. Moreover, we find that subgroup explicitly and within the same time if G is given by a Cayley table. As a corollary, we get an algorithm for testing whether or not a finite permutation group acts on a tree non-trivially.
KW - group representability on trees
KW - group representability problem
KW - minimal permutation representation
KW - permutation group algorithms
KW - Subgroup of minimal index
KW - FINITE
UR - http://www.scopus.com/inward/record.url?scp=85060685589&partnerID=8YFLogxK
U2 - 10.1142/S0219498820500103
DO - 10.1142/S0219498820500103
M3 - Article
AN - SCOPUS:85060685589
VL - 19
JO - Journal of Algebra and its Applications
JF - Journal of Algebra and its Applications
SN - 0219-4988
IS - 1
M1 - 2050010
ER -
ID: 18506803