Hello Number Theorists,
Thanks to the tireless work of Gerry Myerson, the notes from the 2022 problem sessions are now available online. Thanks, Gerry, for all your hard work!
For this problem set and many more, visit our Problem Sets page.
2022 Lehmer Prize Awards
We are pleased to announce the winners of the 2022 Dick and Emma Lehmer prizes, given to the organizing committee’s favorite talks of the conference, one to a new speaker at the conference, and another chosen from among all the speakers.
The 2022 recipients of the Lehmer Prize are:
- Ingrid Vukusic: Consecutive tuples of multiplicatively dependent integers
- Lee Troupe: An Erdős-Kac Theorem for Sums of Proper Divisors
Congratulations to our award winners, and we hope to see you in 2023!
Posted in Announcements, Prizes
WCNT 2022 Schedule and Problems Sets Available
The 2022 WCNT Schedule has now been posted. Thanks Amy Wooding for all your hard work putting it together!
And once again, thanks to the tireless efforts of Gerry Myerson. the 2021 Problem Set is also available.
See you online, and at Asilomar!
Posted in Announcements, Problem Sets
In Memory of John Brillhart
With a heavy heart, we bring you the news that West Coast Number Theory’s very first participant, John Brillhart, has died this year.
John passed away on May 21, 2022, at the age of 91.
A few years ago, we asked John to describe the origin of the meeting now known as the West Coast Number Theory conference. This is the message he sent in reply:
In January 1967, I got my PhD from Berkeley under D. H. Lehmer and then moved to Tucson, Arizona that fall to start teaching at the University of Arizona. That December at Christmas, I returned to Berkeley to visit my family, so the Lehmers and Robinsons decided to have a Christmas get-together in the form of an informal mini meeting with talks as well.
Dana Scott, Hansraj Gupta, and Don Knuth, who drove up from Stanford, came to the meeting. It was very pleasant. The following Christmas, when I again returned to Berkeley, the party/meeting was repeated; Emma Lehmer and Julia Robinson this time made cookies.
In August of 1969, there was a remarkable meeting at Oxford University on computational number theory to which a huge representation of number theorists came. There is a wonderful photograph of this meeting that is available on the internet. It was at this meeting that the Lehmers decided that they would make the Christmas meeting an annual affair, which they did the following Christmas. And thus, the meeting was founded, and though it has changed over the years, it has remained the same informal, pleasant venue that welcomes mathematicians, young and old, to come and talk about what they want.
John Brillhart is likely best known mathematically for his work on the continued fraction factoring algorithm with Mike Morrison, which is said to have ushered in the modern age of integer factoring methods.
John was also one of the original board members of the Number Theory Foundation, a non-profit organization that supports number theory events.
We will be honoring John Brillhart this year during the West Coast Number Theory conference Dec 15-19, 2022.
Posted in Uncategorized
2021 Lehmer Prize Awards
We are pleased to announce the winners of the 2021 Emma and Dick Lehmer prizes, given to the organizing committee’s favorite talks of the conference. Since we were having an agonizingly difficult time picking just two excellent talks, and since we didn’t give out any awards during the pandemic pause of 2020, we decided to double the number of recipients this time around.
The 2021 recipients of the Lehmer Prize are:
- Shanna Dobson: Diamond L-Groups and Diamond Modular Curve
- Vaishavi Sharma: Arithmetic properties of the divisor function
- Johann Thiel: Solving the membership problem for certain subgroups of SL_2(Z)
- Sarah Arpin: Supersingular Elliptic Curve Isogeny Graphs with Level Structure
Congratulations to all our award winners, and we hope to see you in 2022!
Posted in Announcements, Prizes
50th Anniversary Problem Set posted
Thanks to the tireless work of Gerry Myerson, the notes from the 2019 problem sessions are now available online. Thanks Gerry for all your hard work!
For this problem set, and many more, visit our Problem Sets page.
Posted in Problem Sets
2019 Lehmer Prizes
We are pleased to announce the winners of the 2019 Emma and Dick Lehmer prizes, given to the committee’s favorite talks of the conference. The 2019 recipients are:
- Nandita Sahajpal — Rational Zeros of a System of Two Quadratic Forms
- Evan M. O’Dorney — Reflection theorems for class numbers of binary forms
Congratulations to our 2019 recipients!
Posted in Announcements, Prizes
2018 Lehmer Prizes
We are pleased to announce the winners of the 2018 Emma and Dick Lehmer prizes, given to the committee’s favorite talks of the conference. The 2018 recipients are:
- David Nguyen: The k-fold divisor function in arithmetic progression to large moduli
- Simon Rubinstein-Salzedo: Diophantine tuples over Z_p
Congratulations to our 2018 recipients!
Posted in Announcements, Prizes
2017 Lehmer Prizes
We are pleased to announce the winners of the 2017 Emma and Dick Lehmer prizes, given to the committee’s favorite talks of the conference. The 2017 recipients are:
- Lee Troupe. Counting subgroups of the multiplicative group
- Enrique Treviño. Counting perfect polynomials
- Kelly Emrich, Clark Lyons. Norm-Euclidean Ideal Classes in Galois Cubic Fields
Congratulations to our 2017 recipients!
Posted in Announcements, Prizes
2016 Lehmer Prizes
We are pleased to announce the winners of the 2016 Emma and Dick Lehmer prizes, given to the committee’s favorite talks of the conference. The 2016 recipients are:
- Bianca Thompson: On the Field of Definition of a Cubic Rational Function and its Critical Points
- Andrew Shallue: Average liar counts for degree 2 Frobenius pseudoprimes
Congratulations to our 2016 recipients!
Posted in Announcements, Prizes
West Coast Number Theory 2026 
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