Infinitesimal categorical Torelli theorems for Fano threefolds

نویسندگان

چکیده

Let X be a smooth Fano variety and Ku(X) its Kuznetsov component. A Torelli theorem for states that is uniquely determined by certain polarized abelian associated to it. An infinitesimal the differential of period map injective. categorical variant morphism η:H1(X,TX)→HH2(Ku(X)) In present article, we use machinery Hochschild (co)homology relate aforementioned three Torelli-type theorems varieties via commutative diagram. As an application, prove class prime threefolds. We then prove, infinitesimally, restatement Debarre–Iliev–Manivel conjecture regarding general fibre ordinary Gushel–Mukai

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Extremal Elliptic Surfaces & Infinitesimal Torelli

We describe in terms of the j-invariant all elliptic surfaces π : X → C with a section, such that h(X) = rankNS(X) and the Mordell-Weil group of π is finite. We use this to give a complete solution to infinitesimal Torelli for elliptic surfaces over P with a section.

متن کامل

Infinitesimal Torelli Theorem for Surfaces with C

In the present paper, we will prove the infinitesimal Torelli theorem for general minimal complex surfaces X’s with c1 = 3, χ(O) = 2, and Tors(X) ≃ Z/3, where c1, χ(O), and Tors(X) are the first Chern class, the Euler characteristic of the structure sheaf, and the torsion part of the Picard group of X, respectively. We will also show that all surfaces with the invariants as above are deformatio...

متن کامل

Canonical Toric Fano Threefolds

An inductive approach to classifying all toric Fano varieties is given. As an application of this technique, we present a classification of the toric Fano threefolds with at worst canonical singularities. Up to isomorphism, there are 674,688 such varieties.

متن کامل

Boundedness theorem for Fano log-threefolds

The main purpose of this article is to prove that the family of all Fano threefolds with log-terminal singularities with bounded index is bounded.

متن کامل

Infinitesimal Presentations of the Torelli Groups

Contents 1. Introduction 597 2. Braid groups in positive genus 601 3. Relative completion of mapping class groups 603 4. Mixed Hodge structures on Torelli groups 608 5. Review of continuous cohomology 613 6. Remarks on the representations of sp g 616 7. Continuous cohomology of Torelli groups 618 8. The lower central series quotients of a surface group 621 9. The action of t 1 g on p g 623 10. ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of Pure and Applied Algebra

سال: 2023

ISSN: ['1873-1376', '0022-4049']

DOI: https://doi.org/10.1016/j.jpaa.2023.107418