Volume 25, issue 7 (2021)

Download this article
Download this article For screen
For printing
Recent Issues

Volume 28
Issue 5, 1995–2482
Issue 4, 1501–1993
Issue 3, 1005–1499
Issue 2, 497–1003
Issue 1, 1–496

Volume 27, 9 issues

Volume 26, 8 issues

Volume 25, 7 issues

Volume 24, 7 issues

Volume 23, 7 issues

Volume 22, 7 issues

Volume 21, 6 issues

Volume 20, 6 issues

Volume 19, 6 issues

Volume 18, 5 issues

Volume 17, 5 issues

Volume 16, 4 issues

Volume 15, 4 issues

Volume 14, 5 issues

Volume 13, 5 issues

Volume 12, 5 issues

Volume 11, 4 issues

Volume 10, 4 issues

Volume 9, 4 issues

Volume 8, 3 issues

Volume 7, 2 issues

Volume 6, 2 issues

Volume 5, 2 issues

Volume 4, 1 issue

Volume 3, 1 issue

Volume 2, 1 issue

Volume 1, 1 issue

The Journal
About the Journal
Editorial Board
Editorial Procedure
Subscriptions
 
Submission Guidelines
Submission Page
Policies for Authors
Ethics Statement
 
ISSN 1364-0380 (online)
ISSN 1465-3060 (print)
Author Index
To Appear
 
Other MSP Journals
Factorization statistics and bug-eyed configuration spaces

Dan Petersen and Philip Tosteson

Geometry & Topology 25 (2021) 3691–3723
Abstract

A recent theorem of Hyde proves that the factorization statistics of a random polynomial over a finite field are governed by the action of the symmetric group on the configuration space of n distinct ordered points in 3. Hyde asked whether this result could be explained geometrically. We give a geometric proof of Hyde’s theorem as an instance of the Grothendieck–Lefschetz trace formula applied to an interesting, highly nonseparated algebraic space. An advantage of our method is that it generalizes uniformly to any Weyl group. In the process we study certain non-Hausdorff models for complements of hyperplane arrangements, first introduced by Proudfoot.

Keywords
arithmetic topology, configuration spaces, hyperplane arrangement, Salvetti complex
Mathematical Subject Classification
Primary: 11T06, 14F20, 14N20, 55R80
Secondary: 14A20, 14G15
References
Publication
Received: 17 June 2020
Revised: 13 October 2020
Accepted: 22 November 2020
Published: 25 January 2022
Proposed: Mladen Bestvina
Seconded: David M Fisher, Dan Abramovich
Authors
Dan Petersen
Department of Mathematics
Stockholm University
Stockholm
Sweden
Philip Tosteson
Department of Mathematics
University of Chicago
Chicago, IL
United States