On the vanishing of the hyperdeterminant under certain symmetry conditions
Given a vector space V over a field K whose characteristic is coprime with d!, let us decompose the vector space of multilinear forms V ∗ ⊗ (d) ... ⊗ V ∗ = ⊗ λ Wλ(X, K) according to the different partitions λ of d, i.e. the different representations of Sd. In this paper we first give a decomposition...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/120924 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/120924 |
| Access Level: | acceso abierto |
| Palabra clave: | Hyperdeterminant Schur functors Representation theory Álgebra 1201.10 Álgebra Lineal |
| Sumario: | Given a vector space V over a field K whose characteristic is coprime with d!, let us decompose the vector space of multilinear forms V ∗ ⊗ (d) ... ⊗ V ∗ = ⊗ λ Wλ(X, K) according to the different partitions λ of d, i.e. the different representations of Sd. In this paper we first give a decomposition W(d−1,1)(V, K) = ⊗ d−1 i=1 Wi (d−1,1)(V, K). We finally prove the vanishing of the hyperdeterminant of any F ∈ (⊗ λ≠(d),(d−1,1)) ⊕ Wi (d−1,1)(V, K). This improves the result in [10] and [1], where the same result was proved without this new last summand. |
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