## Hokkaido Mathematical Journal

### Automorphisms of $\Sigma_{n+1}-$invariant trilinear forms

#### Abstract

Examination of automorphism groups of forms is undertaken by many authors. Sometimes the description of such groups is a difficult task. It turns out that a representation of a form as a sum of powers of linear forms may be very helpful, especially when this representation is unique. We show this in the case of $\Sigma_{n+1}-$invariant symmetric trilinear form $\Theta_n$ considered by Egawa and Suzuki.

#### Article information

Source
Hokkaido Math. J., Volume 36, Number 1 (2007), 73-77.

Dates
First available in Project Euclid: 29 September 2010

https://projecteuclid.org/euclid.hokmj/1285766663

Digital Object Identifier
doi:10.14492/hokmj/1285766663

Mathematical Reviews number (MathSciNet)
MR2309822

Zentralblatt MATH identifier
1130.11018

Subjects
Primary: 11E76: Forms of degree higher than two

#### Citation

S{\L}ADEK, Andrzej; WO{\L}OWIEC-MUSIA{\L}, Ma{\l}gorzata. Automorphisms of $\Sigma_{n+1}-$invariant trilinear forms. Hokkaido Math. J. 36 (2007), no. 1, 73--77. doi:10.14492/hokmj/1285766663. https://projecteuclid.org/euclid.hokmj/1285766663