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Summer Graduate School

Séminaire de Mathématiques Supérieures 2026: Universal Statistics in Number Theory (Montréal, Canada) May 04, 2026 - May 15, 2026
Parent Program: --
Location: CRM, Montréal
Organizers Louis-Pierre Arguin (University of Oxford), Andrew Granville (Université de Montréal), Dimitris Koukoulopoulos (Université de Montréal), Matilde Lalin (Université de Montréal), Carlo Pagano (Concordia University), Elliott Paquette (McGill University), Frank Thorne (University of South Carolina)
Speaker(s)

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Description
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One of the hottest topics in analytic number theory involves the use of statistics and probability in understanding different aspects of algebraic and analytic number theory, through various new lenses. This is reflected in some of the most exciting number theory research of the last few years (for example, of Bhargava, of Ellenberg and Venkatesh, of Alexander Smith, of Sawin and Wood, of Adam Harper, of Koukoulopoulos and Maynard, of Helfgott and Radziwill, of Pilatte,....). As a consequence the CRM will host a thematic semester Mar 2-July 3, 2026 on these topics involving some of the world leaders in the subject. Since this new area can roughly be split in two into Algebraic and Analytic, we will focus for two months on each, with the SMS school placed in the middle. The 2026 SMS will introduce junior mathematicians to important trends in number theory. 

School Structure

The first week will have a focus on arithmetic statistics but will include some of the more basic probabilistic number theory lectures.  The second week will have a focus on probabilistic number theory, but will include some of the more advanced arithmetic statistics lectures.

There will be three or four hous of lecture courses per day, accompanied by several problem sessions and working groups.

Prerequisites

Students should be familiar with first courses in algebraic number theory and in analytic number theory.

Preparatory Reading for certain mini-courses. Each of the following are about 30 pages long:

-- Melanie Wood (Harvard): "Probability theory for random groups arising in number theory" https://ems.press/books/standalone/278/5565

-- Ashvin Swaminathan (Harvard): "Counting Cubic Number Fields" by Niven Achenjang https://www.mit.edu/~NivenT/assets/pdf/Counting_Cubic_Number_Fields.pdf.

-- Adam Harper "Moments of random multiplicative functions, III: A short review" https://arxiv.org/abs/2410.11523, & the introduction of "On the limiting distribution of sums of random multiplicative functions"  https://arxiv.org/abs/2508.12956

-- Alexandra Florea (UC Irvine): "Traces of high powers of the Frobenius class in the hyperelliptic ensemble" by Zeev Rudnick, Acta Arithmetic, 143.1 (2010), 81-99, obatin from this LINK

-- Alex Smith: "The Selmer group, the Shafarevich-Tate group, and the weak Mordell Weil theorem" by Bjorn Poonen https://math.mit.edu/~poonen/f01/weakmw.pdf

-- Tim Browning (IST Austria): "Beginners guide  to the circle method" by Andrew Granville https://dms.umontreal.ca/~andrew/CircleMethodNotes.pdf

Application Procedure

SLMath is only able to support a limited number of students to attend this school.  Therefore, it is likely that only one student per institution will be funded by SLMath.

For eligibility and how to apply, see the Summer Graduate Schools homepage.

Venue

The summer school will take place at Centre de recherches mathématiques (CRM), Montréal, Canada.

Additional Links

For additional information about the thematic program, check out this webpage: https://www.crmath.ca/en/activities/#/type/activity/id/3952
For additional information about the summer school, check out this webpage: https://www.crmath.ca/en/activities/#/type/activity/id/4055

Keywords and Mathematics Subject Classification (MSC)
Tags/Keywords
  • arithmetic statistics

  • Probabilistic number theory

  • Riemann zeta function

  • L-functions over number fields

  • L-functions over finite fields

  • geometry of numbers

  • profinite groups

  • Galois cohomology

  • gaussian multiplicative chaos

  • log-correlated fields

  • Multiplicative functions

  • Divisors

Primary Mathematics Subject Classification
Secondary Mathematics Subject Classification No Secondary AMS MSC
Schedule, Notes/Handouts & Videos
Show Schedule, Notes/Handouts & Videos
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May 04, 2026
Monday
09:15 AM - 09:30 AM
  Opening Remarks
09:30 AM - 10:30 AM
  Random profinite groups and arithmetic statistics
Melanie Matchett-Wood (Harvard University; University of California, Berkeley)
11:00 AM - 12:00 PM
  Galois cohomology: Definition of H0/H1, Selmer group
Alexander Smith (Northwestern University)
12:00 PM - 12:30 PM
  Break
12:30 PM - 01:30 PM
  Introduction to counting orbits of coregular representations: Low dimensions
Ashvin Swaminathan (Harvard University)
01:30 PM - 03:30 PM
  Lunch
03:30 PM - 06:00 PM
  Arithmetic Stats working session: Cohomology
May 05, 2026
Tuesday
09:00 AM - 10:30 AM
  Introduction to multiplicative chaos: Steinhaus model of zeta. Chaos.
Christian Webb (University of Helsinki)
11:00 AM - 12:30 PM
  Extrema of log-correlated processes: BRW, log-correlated processes
Louis-Pierre Arguin (University of Oxford)
12:30 PM - 02:30 PM
  Lunch
02:30 PM - 05:30 PM
  Probability working session: I/ Estimates for random Euler products II/Some problems on ballots
May 06, 2026
Wednesday
09:00 AM - 10:00 AM
  Random profinite groups and arithmetic statistics
Melanie Matchett-Wood (Harvard University; University of California, Berkeley)
10:30 AM - 11:30 AM
  Galois cohomology: The Greenberg-Wiles formula
Alexander Smith (Northwestern University)
12:00 PM - 01:00 PM
  Introduction to counting orbits of coregular representations: Counting in cuspidal regions
Ashvin Swaminathan (Harvard University)
May 07, 2026
Thursday
09:00 AM - 10:30 AM
  Introduction to multiplicative chaos: Critical Chaos
Christian Webb (University of Helsinki)
11:00 AM - 12:30 PM
  Extrema of log-correlated processes: Tightness of the maxima of Steinhaus model. Berry Esseen estimates
Louis-Pierre Arguin (University of Oxford)
12:30 PM - 02:30 PM
  Lunch
02:30 PM - 05:30 PM
  Probability working session: I/ Some harmonic analysis, approximating indicators by polynomials; II/ Relating Steinhaus to Gaussian, coupling
May 08, 2026
Friday
09:00 AM - 10:00 AM
  Random profinite groups and arithmetic statistics
Melanie Matchett-Wood (Harvard University; University of California, Berkeley)
10:30 AM - 11:30 AM
  Galois cohomology: Distribution of isogeny Selmer groups and class groups in families
Alexander Smith (Northwestern University)
12:00 PM - 01:00 PM
  Introduction to counting orbits of coregular representations: Beyond low-dimensions
Ashvin Swaminathan (Harvard University)
01:00 PM - 03:00 PM
  Lunch
03:00 PM - 06:00 PM
  Arithmetic Stats working session: Cohomology
May 11, 2026
Monday
09:00 AM - 10:00 AM
  Introduction to multiplicative chaos: Strategies for chaos for zeta
Christian Webb (University of Helsinki)
10:30 AM - 11:30 AM
  Extrema of log-correlated processes: Maxima of zeta in short intervals
Louis-Pierre Arguin (University of Oxford)
12:00 PM - 01:00 PM
  Introduction to random multiplicative functions
Adam Harper (University of Warwick)
01:00 PM - 03:00 PM
  Lunch
03:00 PM - 04:00 PM
  Points on varieties: The circle method
Tim Browning (Institute of Science and Technology Austria)
May 12, 2026
Tuesday
09:00 AM - 10:00 AM
  Statistics of L-functions over finite fields
Alexandra Florea (University of California, Irvine)
10:30 AM - 11:30 AM
  Moments of L-functions over number fields
Maksym Radziwill (Northwestern University)
12:00 PM - 01:00 PM
  Points on varieties: The large sieve (for point counting or for studying local solubility in families)
Tim Browning (Institute of Science and Technology Austria)
01:00 PM - 03:00 PM
  Lunch
03:00 PM - 04:00 PM
  Introduction to random multiplicative functions
Adam Harper (University of Warwick)
May 13, 2026
Wednesday
09:00 AM - 10:00 AM
  Points on varieties: The Ekedahl/geometric sieve
Tim Browning (Institute of Science and Technology Austria)
10:30 AM - 11:30 AM
  Statistics of L-functions over finite fields
Alexandra Florea (University of California, Irvine)
12:00 PM - 01:00 PM
  Moments of L-functions over number fields
Maksym Radziwill (Northwestern University)
01:00 PM - 03:00 PM
  Lunch
03:00 PM - 06:00 PM
  Working session on points on varieties
May 14, 2026
Thursday
09:00 AM - 10:00 AM
  Introduction to random multiplicative functions
Adam Harper (University of Warwick)
10:30 AM - 11:30 AM
  Statistics of L-functions over finite fields
Alexandra Florea (University of California, Irvine)
12:00 PM - 01:00 PM
  Moments of L-functions over number fields
Maksym Radziwill (Northwestern University)
01:00 PM - 03:00 PM
  Lunch
03:00 PM - 06:00 PM
  Working session on statistics of RMFs and of L-functions
May 15, 2026
Friday
09:00 AM - 10:00 AM
  Special lecture on the distribution of random multiplicative functions
10:30 AM - 11:30 AM
  Hilbert 10
Carlo Pagano (Concordia University)
12:00 PM - 01:00 PM
  Poissonian multiplicative chaos and divisor problems
Dimitris Koukoulopoulos (Université de Montréal)
01:00 PM - 03:30 PM
  Lunch
03:30 PM - 04:30 PM
  Andre-Aisenstadt lecture and Colloquium
Melanie Matchett-Wood (Harvard University; University of California, Berkeley)