Details
Original language | English |
---|---|
Pages (from-to) | 221-225 |
Number of pages | 5 |
Journal | Expositiones mathematicae |
Volume | 35 |
Issue number | 2 |
Publication status | Published - Jun 2017 |
Externally published | Yes |
Abstract
Let G be a permutation group on n<∞ objects. Let f(g) be the number of fixed points of g∈G, and let {f(g):1≠g∈G}={f1,…,fr}. In this expository note we give a character-free proof of a theorem of Blichfeldt which asserts that the order of G divides (n−f1)…(n−fr). We also discuss the sharpness of this bound.
Keywords
- Blichfeldt's theorem, Number of fixed points, Permutation character
ASJC Scopus subject areas
- Mathematics(all)
- General Mathematics
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Expositiones mathematicae, Vol. 35, No. 2, 06.2017, p. 221-225.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - On a theorem of Blichfeldt
AU - Sambale, Benjamin
N1 - Funding information: This work is supported by the German Research Foundation (project SA 2864/1-1) and the Daimler and Benz Foundation (project 32-08/13).
PY - 2017/6
Y1 - 2017/6
N2 - Let G be a permutation group on n<∞ objects. Let f(g) be the number of fixed points of g∈G, and let {f(g):1≠g∈G}={f1,…,fr}. In this expository note we give a character-free proof of a theorem of Blichfeldt which asserts that the order of G divides (n−f1)…(n−fr). We also discuss the sharpness of this bound.
AB - Let G be a permutation group on n<∞ objects. Let f(g) be the number of fixed points of g∈G, and let {f(g):1≠g∈G}={f1,…,fr}. In this expository note we give a character-free proof of a theorem of Blichfeldt which asserts that the order of G divides (n−f1)…(n−fr). We also discuss the sharpness of this bound.
KW - Blichfeldt's theorem
KW - Number of fixed points
KW - Permutation character
UR - http://www.scopus.com/inward/record.url?scp=85006041088&partnerID=8YFLogxK
U2 - 10.1016/j.exmath.2016.10.002
DO - 10.1016/j.exmath.2016.10.002
M3 - Article
AN - SCOPUS:85006041088
VL - 35
SP - 221
EP - 225
JO - Expositiones mathematicae
JF - Expositiones mathematicae
SN - 0723-0869
IS - 2
ER -