Derivations of negative degree on quasihomogeneous isolated complete intersection singularities.
type: Dataset
description: J. Wahl conjectured that every quasihomogeneous isolated normal singularity admits a positive grading for which there are no derivations of negative weighted degree. We confirm his conjecture for quasihomogeneous isolated complete intersection singularities of either order at least $3$ or embedding dimension at most $5$. For each embedding dimension larger than $5$ (and each dimension larger than $3$), we give a counter-example to Wahl's conjecture.
landing page: https://hal.science/hal-00960092
keyword: 13n15-14m10-14h20
keyword: complete-intersection
keyword: derivation
keyword: infoeu-reposemanticspreprint
keyword: mathmath-agmathematics-mathalgebraic-geometry-mathag
keyword: preprints-working-papers-
keyword: singularity
issued: 2026-05-06T00:39:14.397368
modified: 2026-05-06T00:39:14.397372
language: en
contact point: Organization
  fn: CCSD

test_moissonnage_selune
type: Agent

Derivations of negative degree on quasihomogeneous isolated complete intersection singularities.
type: Distribution
format: HTML
access URL: https://hal.science/hal-00960092
issued: 2026-05-06T00:39:14.413796
modified: 2026-05-06T00:39:14.372062