Hodge-to-de Rham Degeneration for Singular Curves
Time: 2026-05-13
Published By: He Liu
Speaker(s): Yunfan He (BICMR)
Time: 15:00-16:00 May 15, 2026
Venue: Room 77201, Jingchunyuan 78, BICMR
For a smooth projective variety, Deligne and Illusie proved that the Hodge-to-de Rham spectral sequence degenerates at the first page. For singular varieties, this classical picture no longer holds. In this talk, I will discuss what happens for integral projective curves with local complete intersection singularities. I will explain that the derived Hodge-to-de Rham spectral sequence degenerates at the second page exactly when all singularities are quasihomogeneous plane curve singularities.
