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A SAGBI Basis For $\mathbb F[V_2\oplus V_2\oplus V_3]^{C_p}$ |
Canad. Math. Bull. 52(2009), 72-83
Published:2009-03-01
Printed: Mar 2009
Printed: Mar 2009
- Alexander Duncan
- Michael LeBlanc
- David L. Wehlau
Abstract
Let $C_p$ denote the cyclic group of order $p$, where $p \geq 3$ is
prime. We denote by $V_n$ the indecomposable $n$ dimensional
representation of $C_p$ over a field $\mathbb F$ of characteristic
$p$. We compute a set of generators, in fact a SAGBI basis, for
the ring of invariants $\mathbb F[V_2 \oplus V_2 \oplus V_3]^{C_p}$.
| MSC Classifications: | 13A50 - Actions of groups on commutative rings; invariant theory [See also 14L24] |