---
_id: '10765'
abstract:
- lang: eng
  text: We establish the Hardy-Littlewood property (à la Borovoi-Rudnick) for Zariski
    open subsets in affine quadrics of the form q(x1,...,xn)=m, where q is a non-degenerate
    integral quadratic form in  n>3 variables and m is a non-zero integer. This gives
    asymptotic formulas for the density of integral points taking coprime polynomial
    values, which is a quantitative version of the arithmetic purity of strong approximation
    property off infinity for affine quadrics.
acknowledgement: "We are grateful to Mikhail Borovoi, Zeev Rudnick and Olivier Wienberg
  for their interest in our\r\nwork. We would like to address our gratitude to Ulrich
  Derenthal for his generous support at Leibniz Universitat Hannover. We are in debt
  to Tim Browning for an enlightening discussion and to the anonymous referees for
  critical comments, which lead to overall improvements of various preliminary versions
  of this paper. Part of this work was carried out and reported during a visit to
  the University of Science and Technology of China. We thank Yongqi Liang for offering
  warm hospitality. The first author was supported by a Humboldt-Forschungsstipendium.
  The second author was supported by grant DE 1646/4-2 of the Deutsche Forschungsgemeinschaft."
article_number: '108236'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Yang
  full_name: Cao, Yang
  last_name: Cao
- first_name: Zhizhong
  full_name: Huang, Zhizhong
  id: 21f1b52f-2fd1-11eb-a347-a4cdb9b18a51
  last_name: Huang
citation:
  ama: Cao Y, Huang Z. Arithmetic purity of the Hardy-Littlewood property and geometric
    sieve for affine quadrics. <i>Advances in Mathematics</i>. 2022;398(3). doi:<a
    href="https://doi.org/10.1016/j.aim.2022.108236">10.1016/j.aim.2022.108236</a>
  apa: Cao, Y., &#38; Huang, Z. (2022). Arithmetic purity of the Hardy-Littlewood
    property and geometric sieve for affine quadrics. <i>Advances in Mathematics</i>.
    Elsevier. <a href="https://doi.org/10.1016/j.aim.2022.108236">https://doi.org/10.1016/j.aim.2022.108236</a>
  chicago: Cao, Yang, and Zhizhong Huang. “Arithmetic Purity of the Hardy-Littlewood
    Property and Geometric Sieve for Affine Quadrics.” <i>Advances in Mathematics</i>.
    Elsevier, 2022. <a href="https://doi.org/10.1016/j.aim.2022.108236">https://doi.org/10.1016/j.aim.2022.108236</a>.
  ieee: Y. Cao and Z. Huang, “Arithmetic purity of the Hardy-Littlewood property and
    geometric sieve for affine quadrics,” <i>Advances in Mathematics</i>, vol. 398,
    no. 3. Elsevier, 2022.
  ista: Cao Y, Huang Z. 2022. Arithmetic purity of the Hardy-Littlewood property and
    geometric sieve for affine quadrics. Advances in Mathematics. 398(3), 108236.
  mla: Cao, Yang, and Zhizhong Huang. “Arithmetic Purity of the Hardy-Littlewood Property
    and Geometric Sieve for Affine Quadrics.” <i>Advances in Mathematics</i>, vol.
    398, no. 3, 108236, Elsevier, 2022, doi:<a href="https://doi.org/10.1016/j.aim.2022.108236">10.1016/j.aim.2022.108236</a>.
  short: Y. Cao, Z. Huang, Advances in Mathematics 398 (2022).
date_created: 2022-02-20T23:01:30Z
date_published: 2022-03-26T00:00:00Z
date_updated: 2023-08-02T14:24:18Z
day: '26'
department:
- _id: TiBr
doi: 10.1016/j.aim.2022.108236
external_id:
  arxiv:
  - '2003.07287'
  isi:
  - '000792517300014'
intvolume: '       398'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2003.07287
month: '03'
oa: 1
oa_version: Preprint
publication: Advances in Mathematics
publication_identifier:
  eissn:
  - 1090-2082
  issn:
  - 0001-8708
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: Arithmetic purity of the Hardy-Littlewood property and geometric sieve for
  affine quadrics
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 398
year: '2022'
...
---
_id: '10033'
abstract:
- lang: eng
  text: The ⊗*-monoidal structure on the category of sheaves on the Ran space is not
    pro-nilpotent in the sense of [3]. However, under some connectivity assumptions,
    we prove that Koszul duality induces an equivalence of categories and that this
    equivalence behaves nicely with respect to Verdier duality on the Ran space and
    integrating along the Ran space, i.e. taking factorization homology. Based on
    ideas sketched in [4], we show that these results also offer a simpler alternative
    to one of the two main steps in the proof of the Atiyah-Bott formula given in
    [7] and [5].
acknowledgement: 'The author would like to express his gratitude to D. Gaitsgory,
  without whose tireless guidance and encouragement in pursuing this problem, this
  work would not have been possible. The author is grateful to his advisor B.C. Ngô
  for many years of patient guidance and support. This paper is revised while the
  author is a postdoc in Hausel group at IST Austria. We thank him and the group for
  providing a wonderful research environment. The author also gratefully acknowledges
  the support of the Lise Meitner fellowship “Algebro-Geometric Applications of Factorization
  Homology,” Austrian Science Fund (FWF): M 2751.'
article_number: '107992'
article_processing_charge: Yes (via OA deal)
article_type: original
arxiv: 1
author:
- first_name: Quoc P
  full_name: Ho, Quoc P
  id: 3DD82E3C-F248-11E8-B48F-1D18A9856A87
  last_name: Ho
  orcid: 0000-0001-6889-1418
citation:
  ama: Ho QP. The Atiyah-Bott formula and connectivity in chiral Koszul duality. <i>Advances
    in Mathematics</i>. 2021;392. doi:<a href="https://doi.org/10.1016/j.aim.2021.107992">10.1016/j.aim.2021.107992</a>
  apa: Ho, Q. P. (2021). The Atiyah-Bott formula and connectivity in chiral Koszul
    duality. <i>Advances in Mathematics</i>. Elsevier. <a href="https://doi.org/10.1016/j.aim.2021.107992">https://doi.org/10.1016/j.aim.2021.107992</a>
  chicago: Ho, Quoc P. “The Atiyah-Bott Formula and Connectivity in Chiral Koszul
    Duality.” <i>Advances in Mathematics</i>. Elsevier, 2021. <a href="https://doi.org/10.1016/j.aim.2021.107992">https://doi.org/10.1016/j.aim.2021.107992</a>.
  ieee: Q. P. Ho, “The Atiyah-Bott formula and connectivity in chiral Koszul duality,”
    <i>Advances in Mathematics</i>, vol. 392. Elsevier, 2021.
  ista: Ho QP. 2021. The Atiyah-Bott formula and connectivity in chiral Koszul duality.
    Advances in Mathematics. 392, 107992.
  mla: Ho, Quoc P. “The Atiyah-Bott Formula and Connectivity in Chiral Koszul Duality.”
    <i>Advances in Mathematics</i>, vol. 392, 107992, Elsevier, 2021, doi:<a href="https://doi.org/10.1016/j.aim.2021.107992">10.1016/j.aim.2021.107992</a>.
  short: Q.P. Ho, Advances in Mathematics 392 (2021).
date_created: 2021-09-21T15:58:59Z
date_published: 2021-09-21T00:00:00Z
date_updated: 2023-08-14T06:54:35Z
day: '21'
ddc:
- '514'
department:
- _id: TaHa
doi: 10.1016/j.aim.2021.107992
external_id:
  arxiv:
  - '1610.00212'
  isi:
  - '000707040300031'
file:
- access_level: open_access
  checksum: f3c0086d41af11db31c00014efb38072
  content_type: application/pdf
  creator: qho
  date_created: 2021-09-21T15:58:52Z
  date_updated: 2021-09-21T15:58:52Z
  file_id: '10034'
  file_name: 1-s2.0-S000187082100431X-main.pdf
  file_size: 840635
  relation: main_file
file_date_updated: 2021-09-21T15:58:52Z
has_accepted_license: '1'
intvolume: '       392'
isi: 1
keyword:
- Chiral algebras
- Chiral homology
- Factorization algebras
- Koszul duality
- Ran space
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '09'
oa: 1
oa_version: Published Version
project:
- _id: 26B96266-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: M02751
  name: Algebro-Geometric Applications of Factorization Homology
publication: Advances in Mathematics
publication_identifier:
  eissn:
  - 1090-2082
  issn:
  - 0001-8708
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: The Atiyah-Bott formula and connectivity in chiral Koszul duality
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 392
year: '2021'
...
