A Constructive Description of SAGBI Bases for Polynomial Invariants of Permutation Groups
✍ Scribed by Manfred Göbel
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 482 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0747-7171
No coin nor oath required. For personal study only.
✦ Synopsis
This note presents a detailed analysis and a constructive combinatorial description of SAGBI bases for the R-algebra of G-invariant polynomials. Our main result is a ground ring independent characterization of all rings of polynomial invariants of permutation groups G having a finite SAGBI basis.
📜 SIMILAR VOLUMES
Let \(R\) be a commutative ring with 1 , let \(R\left[X_{1}, \ldots, X_{n}\right]\) be the polynomial ring in \(X_{1}, \ldots, X_{n}\) over \(R\) and let \(G\) be an arbitrary group of permutations of \(\left\{X_{1}, \ldots, X_{n}\right\}\). The paper presents an algorithm for computing a small fini
A base of a permutation group G is a sequence B of points from the permutation domain such that only the identity of G fixes B pointwise. We show that primitive permutation groups with no alternating composition factors of degree greater than d and no classical composition factors of rank greater th
## Abstract The axisymmetric spreading of a thin fluid film with slip at the horizontal base is investigated. A nonlinear diffusion equation is derived which relates the height of the free surface to the slip velocity. The equation possesses a Lie point symmetry provided the slip velocity satisfies