Principal Investigators  Affiliated Scientists
Principal Investigators

Jennifer S. Balakrishnan, Boston University
Jennifer Balakrishnan is the Clare Boothe Luce Professor of Mathematics at Boston University. Her research is motivated by various aspects of the classical and padic Birch and SwinnertonDyer conjectures, as well as the problem of algorithmically finding rational points on curves. Balakrishnan received an AB and AM from Harvard University and a PhD in Mathematics from MIT. She was an NSF Postdoctoral Fellow at Harvard, a Titchmarsh Research Fellow at the Mathematical Institute of the University of Oxford, and a Junior Research Fellow of Balliol College, Oxford. She is the recipient of a Sloan Research Fellowship, an NSF CAREER award, and the AWMMicrosoft Research Prize in Algebra and Number Theory.

Noam D. Elkies, Harvard University
Noam D. Elkies is professor of mathematics at Harvard University. He did undergraduate work at Columbia and obtained his doctorate at Harvard in 1987. He is known for exhibiting many integral solutions to the equation
A^{4} + B^{4} + C^{4} = D^{4}
settling a 200yearold question of Euler. Elkies also proved that elliptic curves over the rational numbers admit infinitely many supersingular primes. He is famous for ‘extreme examples’ in number theory: elliptic curves with large rank, K3 surfaces with large Picard group, etc. Elkies has also contributed to algorithms for elliptic curves over finite fields, characterizations of efficient sphere packings, and tilings of Aztec dimanonds by dominoes. In 2017 he was elected to the National Academy of Sciences.

Brendan Hassett, Brown University
Brendan Hassett is Professor of Mathematics and Director of the Institute for Computational and Experimental Research in Mathematics at Brown University. He received his BA in 1992 from Yale and his Ph.D. from Harvard in 1996 under the supervision of Joseph Harris. From 1996 to 2000 he worked as a Dickson Instructor at the University of Chicago, partly supported by a National Science Foundation Postdoctoral Research Fellowship. He was a faculty member at Rice University from 2000 to 2015 and chaired its mathematics department from 2009 to 2014. He has held visiting positions at the Mittag Leffler Institute in Stockholm, the Chinese University of Hong Kong, and the University of Paris (Orsay). Hassett’s research focus is algebraic geometry. His work has been recognized with a Sloan Research Fellowship, a National Science Foundation CAREER award, and the Charles W. Duncan Award for Outstanding Faculty at Rice. He is a Fellow of the American Mathematical Society.

Bjorn Poonen, MIT
Bjorn Poonen received an A.B. in Mathematics and Physics from Harvard in 1989, and a Ph.D. in Mathematics from U.C. Berkeley in 1994. In 2008, after positions at MSRI, Princeton, and U.C. Berkeley, he moved to MIT, where he is the Claude Shannon Distinguished Professor in Science. Poonen is known for developing and analyzing algorithms aimed at determining the set of rational points of a given variety. But his theorems also demonstrate the limitations of known methods, and even show that certain related problems are undecidable. Poonen has received the Guggenheim, Packard, Rosenbaum, Simons, and Sloan fellowships, as well as a Miller Professorship, the Chauvenet Prize, and the MIT School of Science Prize in Undergraduate Teaching. He is also a fourtime Putnam Competition winner, a Simons Investigator, a fellow of the American Academy of Arts and Sciences and of the American Mathematical Society, and the founding managing editor of Algebra & Number Theory. In 2018, Poonen delivered an invited address at the International Congress of Mathematicians.

Andrew Sutherland, MIT
Andrew Sutherland received his S.B. in mathematics from MIT in 1990. As an undergraduate, Sutherland cofounded the software company Escher Group, specializing in highperformance distributed computing, and after completing an NSF Graduate Fellowship at MIT, served as the company’s Chief Technology Officer for ten years. Sutherland returned to academia and completed his Ph.D. in mathematics at MIT in 2007, winning the George M. Sprowles Prize for his thesis. He joined the MIT mathematics department in 2009, and was promoted to Principal Research Scientist in 2012. Sutherland’s research focuses on computational number theory and arithmetic geometry, and he was awarded the Selfridge Prize in 2012, for his work in this area. Sutherland currently serves as Associate Editor of Mathematics of Computation, Editor in Chief of Research in Number Theory, Managing Editor of the LFunctions and Modular Forms Database, and President of the Number Theory Foundation. He was recently named Fellow of the American Mathematical Society as a member of the 2021 Class.

John Voight, Dartmouth College
John Voight is professor of mathematics at Dartmouth College. He received his Ph.D. in 2005 from the University of California, Berkeley, and has held positions at the University of Sydney, the Institute for Mathematics and its Applications (IMA) at the University of Minnesota, and the University of Vermont. Voight’s research interests are in arithmetic geometry and number theory, with a focus on algorithmic aspects. His current research concerns computational problems for moduli spaces and automorphic forms. He is the author of a textbook on quaternion algebras and received an NSF CAREER award. He was the recipient of the Selfridge Prize in 2010 and currently serves on the board for the Lfunctions and Modular Forms DataBase (LMFDB).
Affiliated Scientists

Eran Assaf, Dartmouth College
Eran Assaf obtained his doctorate from the Hebrew University of Jerusalem in 2017. He joined the team in September 2019 as a postdoc at Dartmouth College. His main research interests are the padic local Langlands correspondence, Shimura varieties, padic representations of padic groups and computation of fundamental domains for arithmetic modular groups.

Angelica Babei, McMaster University
Angelica Babei was a research scientist at Dartmouth College in spring 2021. Her research interests include classical and Hilbert modular forms, the arithmetic of quaternion orders and orders in semisimple algebras, and explicit methods for these arithmetic objects.

Barinder Banwait, Boston University
Barinder Banwait joined the Collaboration in September 2022. His research into rational points on modular curves includes work on computing pseudoeigenvalues of modular forms as well as determining uniform sets of primedegree isogenies of elliptic curves. He is also interested in computational aspects of Galois representations of higher dimensional abelian varieties and has contributed to Sage and the LMFDB. Barinder received a BA and MMath from Cambridge University in 2009 and a PhD from Warwick University in 2013 under the supervision of John Cremona. After postdoctoral positions in Bordeaux, Essen, Prayagraj, and Heidelberg, as well as industry positions in Cambridge and London in the Surgical Robotics and Quantitative Finance sectors, he is currently a postdoctoral researcher at Boston University.

Alex Best, King's College London
Alex Best received his PhD at Boston University in 2021 under the supervision of Jennifer Balakrishnan. He subsequently held a postdoctoral position at VU Amsterdam working with Sander Dahmen as part of the project “New Diophantine Directions.” Alex works on explicit Diophantine problems and the uses of computer formalization of mathematical knowledge for mathematicians, reducing the barrier to entry to using such tools. In Fall 2022, Alex will start a postdoctoral position at King’s College London.

Alexander Betts, Harvard University
Betts is a postdoc at Harvard, specialising in arithmetic and anabelian geometry, relating fundamental groups of varieties to their arithmetic properties. His thesis, completed at the University of Oxford under the supervision of Minhyong Kim, showed that classical NéronTate height functions on abelian varieties admit very natural descriptions in terms of fundamental groups of torsors on abelian varieties.

Francesca Bianchi, University of Groningen
Francesca Bianchi is a postdoc at the University of Groningen. She received her PhD from the University of Oxford in 2019, under the supervision of Jennifer Balakrishnan and Alan Lauder. She is mainly interested in padic aspects of (computational) arithmetic geometry, in particular in padic heights and padic methods to compute rational and integral points on curves.

Raymond van Bommel, MIT
Raymond van Bommel is currently a research scientist at MIT. Previously, he was a research associate at Johannes GutenbergUniversität Mainz, Germany. Before he obtained his PhD at Universiteit Leiden, The Netherlands, under the supervision of David Holmes and Fabien Pazuki. During this time, he worked on the algorithmic computation of the different numerical invariants surrounding the Birch and SwinnertonDyer conjecture, first for hyperelliptic curves and later for nonhyperelliptic curves. He joined the MIT team in 2019.

Andrew Booker, University of Bristol
Andrew Booker is Professor of Pure Mathematics at the University of Bristol. He received his PhD from Princeton University in 2003 under the supervision of Peter Sarnak. His interests lie in automorphic forms and analytic number theory, including computational aspects, and he is noted for the development of algorithms for the rigorous computation of Lfunctions and associated data. Between 2013 and 2019, he was coPI of the EPSRCfunded grant “LMF: Lfunctions and modular forms” which helped to support the LMFDB.

Ben Breen
Ben Breen received his Ph.D. at Dartmouth College in June 2020 and subsequently worked as an RTG postdoctoral scholar at Clemson University. His research interests lie in computational number theory and arithmetic geometry. His current research focuses on explicit methods for Hilbert modular forms and CohenLenstra style heuristics.

Alina Bucur, University of California at San Diego
Alina Bucur is an Associate Professor at the University of California at San Diego. She received her Ph.D. from Brown University in 2006 under the supervision of Jeffrey Hoffstein. After that, she held a position as a Moore Instructor at Massachusetts Institute of Technology (postdoc, 20062009) and had visiting positions at the Institute for Advanced Studies (20062007 and 20092010) and MSRI (2011). Her research interests lie in the area of multiple Dirichlet series and arithmetic statistics. Bucur’s work combines techniques from analytic number theory, probability, and arithmetic geometry and has been supported by two Simons Collaboration Grants.

Jerson Caro, Boston University
Jerson Caro is a postdoctoral researcher at Boston University. His research area is Number Theory, with an emphasis on arithmetic geometry and algebraic number theory. In general terms, his main interest is in three topics: finiteness of rational points, the rank of elliptic curves, and the arithmetic of number fields. He received his Ph.D. from the Pontificia Universidad Católica de Chile under the supervision of Hector Pasten.

Shiva Chidambaram, MIT
Shiva Chidambaram is a research scientist at MIT. He joined the collaboration in July 2021 after receiving his PhD from the University of Chicago. His main research interests are number theory and arithmetic geometry, with a focus on Galois representations, Selmer and TateShafarevich groups, and computational aspects of torsion of low dimensional abelian varieties and related moduli spaces.

Atticus Christensen
Atticus Christensen received a PhD in mathematics at MIT under the direction of Bjorn Poonen in 2020.

Fabien Cléry, Loughborough University
Dr. Fabien Cléry received his Ph.D. in 2009 from the University of Lille 1. Since then, he has held positions at the University of Amsterdam, the University of Hannover, the University of Siegen, the Max Planck Institute for Mathematics in Bonn, and the University of Loughborough. His research interests are on two types of modular forms focusing on the theory but also on computational aspects. The two types of modular forms that he is currently studying are Siegel modular forms and Picard modular forms. He worked at Brown university through 2023; he will take up a faculty position at Loughborough University in January 2024.

Edgar Costa, MIT
Edgar Costa received his Ph.D. in 2015 from the Courant Institute of Mathematical Sciences at New York University and was a Postdoctoral Fellow at ICERM during the semester program “Computational Aspects of the Langlands Program”. Prior to joining the collaboration, he was an Instructor in Applied and Computational Mathematics at Dartmouth College. Costa’s research interests are centered around effective methods in arithmetic geometry, arithmetic statistics, and number theory. His current research is focused on the development and application of theoretical and computational techniques to study the interconnections predicted by the Langland’s program.

Alex Cowan, Harvard University
Alex Cowan received his Ph.D. from Columbia University in 2019 and is currently a research scientist at Harvard University. His research interests include elliptic curves, arithmetic statistics, and analytic number theory.

John Cremona, University of Warwick
John Cremona has been a Professor at the University of Warwick since 2007. After obtaining his DPhil under Birch at Oxford in 1981, he held positions at the University of Michigan and Dartmouth College in the US, and the universities of Exeter and Nottingham in the UK. Cremona is best known for developing and implementing modular symbol algorithms and using these to compile tables of elliptic curves over the rationals, and has extended this work to compile similar elliptic curve tables over imaginary quadratic fields. Between 2013 and 2019, he was PI on a major grant “LMF: Lfunctions and modular forms, which partfunded the computing infrastructure and workshops which underpin the LMFDB.

Lassina Dembélé, King's College London
Lassina Dembélé worked for the collaboration at Dartmouth College through spring 2019. His current research interests are in computational number theory, Hilbert modular forms, automorphic forms, and Galois representations. Broadly speaking, his work is in the framework of explicit methods in the padic and mod p Langlands programme.

Maarten Derickx, University of Groningen
Maarten Derickx’s research interests lie primarily in computational number theory. His main focus is Galois representations of elliptic curves over number fields and the corresponding rational points on modular curves, as well as how a good understanding of these can be used in the modular approach to Diophantine equations and the modularity of elliptic curves. Derickx obtained his Ph.D. under the supervision of Bas Edixhoven at Universiteit Leiden in 2016 and was a postdoctoral researcher under Michael Stoll at Universität Bayreuth after this. He worked for the collaboration as a research scientist at MIT through 2019.

Netan Dogra, King's College London
Netan Dogra’s research is on the solution of Diophantine equations using padic analytic and etale topological methods. He is a Royal Society University Research Fellow at King’s College London. Before that he held postdoctoral positions at the University of Oxford, Imperial College London, and Radboud University. He received his PhD in 2015 from the University of Oxford.

Juanita DuqueRosero, Boston University
Juanita DuqueRosero received her PhD from Dartmouth College in 2023, working with John Voight. Her research interests include number theory and arithmetic geometry, focusing on triangular modular curves and explicit methods for computing rational points. Since July 2023, she has been a research assistant professor at Boston University.

Francesc Fité, Universitat de Barcelona
Francesc Fité was a member at the IAS for the 201819 academic year. He obtained his Ph.D. in 2011 at Universitat Politècnica de Catalunya. He has been a postdoc in Bielefeld, Essen, and Barcelona. His main research interests are number theory and arithmetic geometry, with special emphasis on the arithmetic and modularity of low dimensional abelian varieties. Fité was a research scientist with the collaboration at MIT from 2019 to 2021. He is currently a Ramón y Cajal Research Fellow at Universitat de Barcelona.

Sarah Frei, Dartmouth College
Sarah Frei is a John Wesley Young Research Instructor at Dartmouth College, specializing in algebraic geometry and arithmetic geometry. Her research interests include arithmetic aspects of moduli spaces, Brauer groups, and rationality. She received her Ph.D. from the University of Oregon in 2019, under the supervision of Nicolas Addington, and was a postdoctoral instructor at Rice University before joining Dartmouth in 2022.

David Harvey, University of New South Wales
David Harvey is an Associate Professor and Australian Research Council Future Fellow at the University of New South Wales in Sydney, Australia. He received his Ph.D. from Harvard in 2008, and subsequently held a threeyear postdoctoral position at New York University. Harvey’s research interests include algorithmic number theory, especially computing zeta functions of varieties over finite fields, and symbolic computation, especially algorithms for efficient arithmetic on large integers and polynomials.

Sachi Hashimoto, Brown University
Sachi Hashimoto is interested in effective methods in arithmetic geometry and algebraic geometry, and especially in developing methods for determining rational points on curves. She received her PhD in 2022 from Boston University under the supervision of Jennifer Balakrishnan. In July 2023, she started as a Tamarkin Assistant Professor at Brown University. Previously, she was a postdoctoral researcher at the Max Planck Institute for Mathematics in the Sciences in Leipzig.

Daniel Hast, Boston University
Daniel R. Hast is a postdoctoral researcher at Boston University currently working in number theory, arithmetic algebraic geometry, and Diophantine geometry, with a focus on using padic methods and descent techniques to compute rational points on varieties. They received a Ph.D. from University of Wisconsin–Madison in 2018 under the supervision of Jordan Ellenberg, and worked as a G. C. Evans Instructor at Rice University for one year before joining the Simons Collaboration in Fall 2019.

Campbell Hewett
Campbell Hewett received his Ph.D. at MIT in 2020 under Bjorn Poonen. He received an Sc.B. in math at Brown University in 2015. His interests are in algebraic geometry and number theory.

Everett Howe
Everett Howe received his Ph.D. at U.C. Berkeley in 1993, under the supervision of Hendrik Lenstra. After a threeyear postdoctoral position at the University of Michigan, he spent 23 years as a researcher at the Center for Communications Research, La Jolla. Currently, he is an independent mathematician, focusing his attention on curves and abelian varieties, and on computational questions arising from their study.

Sonal Jain, Harvard University
Jain received his doctorate in 2007 at Harvard under the direction of Noam Elkies. He spent several years at the Courant Institute of Mathematical Sciences at NYU and was a postdoctoral fellow at MSRI. He worked as a postdoctoral research scientist with the collaboration in 2020.

Aashraya Jha, Boston University
Aashraya Jha is a PhD student at Boston University, working with Jennifer Balakrishnan. He is interested in arithmetic geometry and algebraic number theory, focusing on finding rational points of curves over number fields, properties of modular abelian varieties and Uniform MordellLang.

Kiran Kedlaya, University of California, San Diego
Kiran Kedlaya is the Stefan E. Warschawski Professor of Mathematics at University of California, San Diego. He received his Ph.D. from MIT in 2000. He is a recipient of the Presidential Early Career Award for Scientists and Engineers, a Sloan Research Fellowship, and a Guggenheim Fellowship. Kedlaya’s research covers a variety of topics in algebraic geometry and number theory, with some emphasis on the computational aspects of these areas. He has developed practical algorithms for computing Lfunctions of algebraic varieties using padic analysis, and for tabulating isogeny classes of abelian varieties over finite fields. He is a frequent contributor to Sage and the LMFDB.

Jean Kieffer, CNRS
Jean Kieffer was a postdoctoral researcher at Harvard University between 2021 and 2023, focusing on computational aspects of abelian varieties and their moduli spaces. He obtained his PhD in 2021 from the University of Bordeaux under the supervision of Damien Robert and Aurel Page. Kieffer is currently a CNRS researcher in mathematics and computer science in Nancy, France, working in the Caramba research team led by Emmanuel Thomé.

Dohyeong Kim, Seoul National University
Dohyeong Kim is interested in the Iwasawa theory, Diophantine equations, and the arithmetic ChernSimons theory. He worked as a research scientist for the collaboration at MIT and previously was a postdoctoral assistant professor at the University of Michigan. Before that, he was a research fellow at the Center for Geometry and Physics for two years. Kim spent his graduate and undergraduate years at the POSTECH.

Avinash (Avi) Kulkarni, Dartmouth College
Avi Kulkarni joined the collaboration in January 2020. His main research interests lie in arithmetic geometry and computational number theory. Before joining the collaboration, he was a postdoctoral researcher at the MPI MiS Leipzig and developer for the OSCAR computer algebra system at TU Kaiserslautern. Avi completed his PhD at Simon Fraser University in 2018.

Jun Lau, Boston University
Jun Bo Lau graduated from the University of California, San Diego, working with Kiran Kedlaya. Lau’s research interests lie in explicit methods in arithmetic geometry, more specifically padic techniques in modular curves, curves over finite fields and cryptography. He joined the collaboration in August 2023.

Wanlin Li, Washington University in St. Louis
Wanlin Li received her Ph.D. from the University of WisconsinMadison in 2019 under the supervision of Jordan Ellenberg. Her research interest lies in arithmetic geometry, particularly the study of curves, surfaces and abelian varieties over fields of positive characteristic. She joined the collaboration at MIT in Fall 2019 and during 20212022 was a postdoc at the Centre de Recherches Mathématiques in Montreal. She is currently an Assistant Professor at Washington University in St. Louis.

Adam Logan, Brown University
Adam Logan graduated from Princeton University in 1995 and received his doctorate from Harvard four years later. He then held postdoctoral positions at MSRI, UC Berkeley, CRM in Montreal, and the University of Waterloo as well as a tenuretrack position at the University of Liverpool before leaving academia, first for finance and then to work for the Government of Canada, where he has been since 2010. His primary research interests have to do with modularity of varieties of dimension greater than 1 and arithmetic of K3 surfaces, but he is easily persuaded to work on other computational problems involving the arithmetic of geometrically interesting varieties, as illustrated by recent and ongoing work on higher modularity of elliptic curves over function fields, surfaces of maximal Picard rank, Ceresa cycles of plane quartic curves, and modular forms associated to Clifford algebras. In September 2023 he will join the Collaboration as Senior Research Associate at ICERM.

David LowryDuda, Brown University
David LowryDuda’s research interests primarily lie in analytic number theory, and in particular on automorphic forms and Lfunctions. During his Ph.D., he developed a new approach to study the size and behavior of automorphic forms. He has contributed to data creation for the LMFDB, as well as daytoday maintenance. LowryDuda completed his Ph.D. at Brown University in 2017, worked as a postdoctoral researcher at Warwick Mathematics Institute, and has returned to ICERM at Brown University for his Simons Collaboration appointment.

Céline Maistret, University of Bristol
Céline Maistret was a postdoctoral faculty fellow at Boston University until 2020. Céline received her Ph.D. from the University of Warwick in 2017 and was a research associate at the University of Bristol before joining Boston University. Maistret’s work revolves around the arithmetic of abelian varieties, with a particular interest toward computations related to the parity conjecture and the Birch and SwinnertonDyer conjecture. She is currently a Royal Society Dorothy Hodgkin Fellow at the University of Bristol.

Grant Molnar
Grant Molnar was awarded his PhD at Dartmouth College in 2023, studying arithmetic statistics under John Voight. He received his BS from BYU Provo in 2016 and his MS from the same university in 2018. Grant has wideranging mathematical interests, but possesses a special fascination with algebraic and analytic number theory.

Steffen Müller, Unviersity of Groningen
Steffen Müller is an assistant professor at the Unviersity of Groningen. He received his Ph.D. from Bayreuth in 2010 and was then a member of the mathematics department in Hamburg and in Oldenburg. He is mainly interested in explicit methods in arithmetic geometry, in particular, the use of archimedean and padic height functions to study rational points on curves and abelian varieties.

Oana Padurariu, Max Planck Institute for Mathematics, Bonn
Oana Padurariu received her PhD at Boston University in 2023 working with Jennifer Balakrishnan. Since July 2023, she has been a postdoctoral fellow at the Max Planck Institute for Mathematics in Bonn. Oana is interested in rational points on varieties (such as Shimura curves and bielliptic curves) and Mazur’s Program B.

David Roe, MIT
David Roe’s study of padic computation includes work on computing Lfunctions of varieties, padic modular forms and methods for tracking precision. He is also interested in the local Langlands correspondence and padic tori. He contributes frequently to Sage, and helped create the LMFDB database of isogeny classes of abelian varieties. David received an S.B. in mathematics and literature from MIT in 2006, completed his Ph.D. at Harvard in 2011, then worked as a postdoctoral fellow at the Universities of Calgary, British Columbia and Pittsburgh before returning to MIT.

Ciaran Schembri, Dartmouth College
Ciaran Schembri is a research scientist at Dartmouth College. He joined the collaboration in September 2019 after receiving his PhD from the University of Sheffield. His main interests are in number theory and arithmetic geometry, in particular on Shimura curves and abelian varieties with quaternionic multiplication.

Sam Schiavone, MIT
Sam Schiavone is a research scientist at MIT. He received his Ph.D. in 2019 from Dartmouth College. His research interests include Belyi maps, Hilbert modular varieties, and algebras of low rank.

Joseph H. Silverman, Brown University
Joseph H. Silverman is a Professor of Mathematics at Brown University, where he has been on the faculty since 1988. He is a recipient of a Sloan Research Fellowship, a Guggenheim Fellowship, and an AMS Steele Prize. His primary research interests are elliptic curves, arithmetic geometry, arithmetic dynamics, and cryptography, and he has also written a number of the standard textbooks in these areas.

Padmavathi Srinivasan, Brown University
Padmavathi Srinivasan received her PhD in 2016 at MIT under the direction of Bjorn Poonen. She joined the collaboration in Fall 2022 after postdoctoral positions at the Georgia Institute of Technology and the University of Georgia. She is interested in various explicit aspects of families of curves and abelian varieties, and their applications to the study of rational points on curves. In Fall 2023 she will take up a faculty position at Boston University.

Nicholas Triantafillou
After graduating from MIT in 2019, Nicholas Triantafillou worked as a postdoctoral fellow at the University of Georgia. His main research interest is in arithmetic geometry, and he is currently working on a project to understand how powerful classical Chabauty’s method is when combined with restriction of scalars and descent techniques.

Jan Vonk, University of Leiden
Jan Vonk is an assistant professor at the University of Leiden. He obtained his doctorate from the University of Oxford in 2015 and held postdoctoral positions at McGill University, the University of Oxford, and the Institute for Advanced Study. His work focuses on padic aspects of arithmetic geometry, in particular applications to explicit class field theory and Diophantine equations.