Academics

A remark on some punctual Quot schemes on smooth projective curves

Time:Fri., 15:30-16:30, Mar. 14, 2025

Venue:B725, Shuangqing Complex Building A

Organizer:Caucher Birkar,Jia Jia

Speaker:Atsushi Ito

Algebraic Geometry Seminar

Organizers:

Caucher Birkar,Jia Jia 贾甲


Speaker:

Atsushi Ito (Tsukuba University)

Time:

Fri., 15:30-16:30, Mar. 14, 2025

Venue:

B725, Shuangqing Complex Building A

Online:

Zoom Meeting ID: 262 865 5007

Passcode: YMSC

Title:

A remark on some punctual Quot schemes on smooth projective curves

Abstract:

For a locally free sheaf $E$ on a smooth projective curve, we can define the punctual Quot scheme which parametrizes torsion quotients of $E$ of length $n$ supported at a fixed point. It is known that the punctual Quot scheme is a normal projective variety with canonical Gorenstein singularities. In this talk, I explain that the punctual Quot scheme is a $\mathbb{Q}$-factorial Fano variety of Picard number one.

DATEMarch 13, 2025
SHARE
Related News
    • 0

      Positivity of the Tangent Bundle of Smooth Projective Surfaces

      AbstractConsider a non-uniruled smooth projective surface S. We establish that the tangent bundle T_S is pseudo-effective if and only if the canonical divisor K_S is nef, and the second Chern class c_2(S) vanishes. Additionally, I will discuss the blow-up of a non-rational ruled surface with a pseudo-effective tangent bundle. This talk is based on a collaborative project with Yongnam Lee and Gu...

    • 1

      Smooth complex projective varieties with infinitely many real forms

      AbstractThe real form problem asks how many different ways one can describe a given complex variety by polynomial equations with real coefficients, up to isomorphisms over the real number field. In this talk, I will discuss some recent results about smooth complex projective varieties with infinitely many real forms. This talk is based on joint works with T.-C. Dinh, C. Gachet, H.-Y. Lin, K. Og...