WelcomeI am Professor of Pure Mathematics in theDepartment of Pure Mathematics and Mathematical Statistics at the University of Cambridge, and currently hold an EPSRC Open Fellowship. Publications | Talks | CV | WOMBL | Combinatorics Meets Model TheoryMy research interests are mostly discrete in nature, and broadly lie at the intersection of combinatorics, number theory and harmonic analysis. Some of my work has close connections with model theory and ergodic theory, and applications to theoretical computer science. Undergraduate and postgraduate students interested in research opportunities are advised to consultthis page prior to getting in touch. Contact
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News22nd March 2025The Erdős Center of the Rényi Institute in Budapest invites applications for postdoctoral positions in the fields of harmonic analysis, number theory, and arithmetic, ergodic and geometric Ramsey theory in conjunction with the upcoming Simons Semester in "New Directions in Modern Harmonic Analysis and Applications", taking place from January to June 2026. These positions are of 6 or 12 months' duration, to start in January 2026 or September 2025, respectively, with some flexibility. Review of applications begins 1 April 2025, and further details are availablehere. 14th February 2025Colleagues at Cambridge have set out their thoughts "Towards a Considerate Email Culture" which are well worth a read. 13th January 2025Two postdoctoral positions with colleagues are currently open: withJoni Teräväinen at Cambridge, and withJuanjo Rué in Barcelona. The application deadlines are 28th and 27th January, respectively. 20th December 2024I am pleased to be able share that WOMBL has just received funding from theNewton and Heilbronn Institutes' joint Network Support Programme for the Mathematical Sciences, which will allow us to resume more regular meeting activity over the next two years. The first of these meetings--our 15th WOMBL!--will take place at Manchester on Thursday, 23rd January. We are looking at a slightly shorter programme than usual to allow participants sufficient time for travel. For further details please see theWOMBL page. 14th November 2024There is a 2-year postdoctoral position available associated with my EPSRC fellowship, starting 1 October 2025 (or earlier by prior agreement). The ideal candidates is interested in working at the interface between model theory and finite combinatorics, and should have either a firm background in additive (or extremal) combinatorics, coupled with an interest in combinatorial problems motivated by model theory; or a firm background in model theory, specifically neostability theory, coupled with an interest in its manifestations in a finitary combinatorial setting. 10th October 2024Postdoc and PhD student positions are available inTom Gur's group in the Department of Computer Science and Technology at Cambridge, in the area of Complexity Theory, Quantum Complexity Theory, Sublinear Algorithms, and/or Additive Combinatorics/Fourier Analysis. 12th September 2024The Foundation Mathematics in Open Access (MathOA), which actively promotes the adoption of Fair Open Access principles, has issued a call for new high-quality Diamond Open Access journals in mathematics. The successful proposal(s) will be awarded a start-up fund of up to €10K. The deadline for submissions is December 15, 2024. Further details can be found athttp://www.mathoa.org. 12th December 2023We are delighted to host thefourteenth 1-day meeting in additive combinatorics and analytic number theory (WOMBL) at Cambridge on Friday, 12th January 2024. If you wish to attend, please register via themeeting webpage. 24th November 2023The department has advertised three permanent positions in Pure Mathematics: two atAssistant Professor Grade 9 (corresponding to a `lectureship') and one atProfessor Grade 11 (equivalent to a `readership' in the former nomenclature). The closing date for these positions is 18 December. 20th October 2023There will be a week-longworkshop at the Isaac Newton Institute in Cambridge next spring celebrating the mathematics of Tim Gowers on the occasion of his 60th birthday, organised by David Conlon, Ben Green, Tom Sanders, Mark Walters, András Zsák and myself.Theworkshop will take place during the week 8-12 April 2024, and will feature speakers from across the spectrum of Tim's mathematical interests, from Banach Space Theory to Combinatorics and Additive Number Theory, Theoretical Computer Science and Pedagogy. 10th March 2023Looking forward to the nextWOMBL at Bristol on Thursday, 30th March. The complete programme is now available from the event webpage. 28th November 2022TheDepartment of Pure Mathematics and Mathematical Statistics at the University of Cambridge is advertising two University Assistant Professorships in Pure Mathematics or Statistics athttps://www.jobs.cam.ac.uk/job/37368/. The closing date for applications is 4th January 2023. Each post comes with a College Fellowship at either Murray Edwards College or at Newnham College, and carries a reduced teaching load for the initial period of the appointment, with the intention that the appointee will spend some of their time engaging in activities to promote the study of and research in mathematics by women. In every other sense these assistant professorships are indistinguishable from a standard University appointment. If you know of any suitable candidates, pleaseget in touch. 7th October 2022TheDepartment of Computer Science and Technology at Cambridge is looking to hire in the area of Algorithms and Complexity. The job advert is available athttps://www.jobs.cam.ac.uk/job/37368/, and the closing date is 28th November 2022. 19th June 2022I am tremendously excited for the start of "Combinatorics Meets Model Theory" tomorrow, a workshop that has been three years in the making. Wishing all participants a safe journey to Cambridge! 1st April 2022While not exactly new,this is an utterly brilliant adaptation of "I will survive". 31st March 2022We are very pleased to announce that after a 2-year pandemic-related hiatus, the Warwick-Oxbridge-Manchester-Bristol-London 1-day meeting in additive combinatorics and number theory (WOMBL) is back on 4th April with a great line-up of speakers. 30th March 2022The Discrete Mathematics Days 2022 will take place at Universidad de Cantabria in Santander (Spain), 4th-6th July 2022. The programme consists of four plenary talks, a number of shorter contributed talks in two parallel sessions, and a poster session. If you wish to contribute a talk or a poster, please submit an extended abstract (at most six pages) via theconference website by 10th April 2022. 28th October 2021It is that time of year again. TheDepartment of Pure Mathematics and Mathematical Statistics at Cambridge is now accepting applications forHerchel Smith Fellowships. The deadline is 12th December 2021. 30th March 2021My colleagueStephen Eglen has written aprimer on the 'Rights Retention Strategy', which helps authors retain rights over their manuscripts. 22nd February 2021TheFaculty of Mathematics has launched a new funded summer research programme intended for women and non-binary students in mathematics who are in their late undergraduate (second year and above) or Master studies. The application deadline for thePhilippa Fawcett Internship Programme is 15th March 2021. Unfortunately I will not be able to supervise any project students under this scheme myself this summer. 1st December 2020TheDepartment of Pure Mathematics and Mathematical Statistics at Cambridge is now accepting applications forHerchel Smith Fellowships. The deadline is 31st December 2020. 20th November 2020The Faculty of Mathematics of the University of Cambridge is excited to announce a substantial new international scholarship scheme for the Master of Advanced Study (MASt) in Mathematics (Part III Mathematics), with up to 30 scholarships available for entry in 2021. This scheme aims to assist and encourage students from across the world who can benefit from this internationally leading masters programme. More information about the programme, the scholarships and how to apply can be found athttps://www.maths.cam.ac.uk/postgrad/part-iii/prospective.html. Applicants wishing to be considered for the Part III Mathematics International Scholarships or for the University of Cambridge Graduate Funding Competition must submit their application, including supporting documents and references, by noon on Thursday 7th January 2021. 25th March 2020If you are in need of some entertainment over the coming weeks and months, there are plenty of online mathematics seminars springing up everywhere. For a list of the ones I am aware of, see myPersonal Roadmap. 20th March 2020Unfortunately I have had to return to the UK earlier than planned as a result of the COVID-19 outbreak in Europe and associated travel restrictions. The last three talks of myForder lecture tour have therefore been cancelled. My sincere apologies for any inconvenience this may cause to those who were planning to attend, and many thanks to my hosts for their understanding. 8th March 2020I have arrived in Auckland, and look forward to starting my tour of New Zealand's universities as the LMS-NZMS Forder Lecturer 2020 tomorrow. My complete itinerary can be viewedhere. 1st November 2019TheJunior Research Fellowship competition atClare College is open to mathematicians this year (deadline: 11th November 2019). 24th October 2019TheDepartment of Pure Mathematics and Mathematical Statistics at Cambridge is now accepting applications forHerchel Smith Fellowships (deadline: 13th December). 3rd October 2018I am excited and proud to be (re)joiningClare College as a Fellow today. 1st September 2018As of today I am a member of the Department of Mathematics and Mathematical Statistics at the University of Cambridge. Please find my new contact details above. 26th January 2017My latest paper, available from mypublications page, describes some recent applications of relative entropy in additive combinatorics. Specifically, it examines to what extent entropy-increment arguments can replace or even outperform more traditional energy-increment strategies or alternative approximation arguments based on the Hahn-Banach theorem. 19th January 2017After nearly two years of preparations, I am tremendously excited about the start of ourPseudorandomness semester at the Simons Institute for the Theory of Computing at Berkeley.The video lectures from our oustanding boot camp are available to viewon this page. 7th December 2016After a one-off performance, BrOx is now BOWL (Bristol-Oxford-Warwick-London) and supported by an LMS Scheme 3 grant. Happening at Imperialtoday! 7th July 2016Our biannual Bristol-Oxford 1-day meeting in additive combinatorics will henceforth be known as "BrOx". We look forward to an excitingprogramme today. 9th May 2016My paper with Alex Saad, entitled "Ramsey multiplicity of linear patterns in certain finite abelian groups", is finally out. The journal link is now available on mypublications page. 25th March 2016A massive thank you to all our speakers at theBMC Special Session in Combinatorics, who over the last couple of days painted an exciting and inspiring picture of the current combinatorial research landscape! 1st March 2016Discrete Analysis, a new arXiv overlay journal, was officially launched today. The first seven articles to be published include a solution of the Erdos discrepancy problem, as well as a finite-field version of a well known Ramsey-theoretic problem on monochromatic sums and products.Take a look! For more details on the background and philosophy of the journal see Tim Gowers'sblog post. 20th November 2015In spring 2017 we are bringing together mathematicians and theoretical computer scientists for asemester-long research programme on Pseudorandomness at theSimons Institute in Berkeley. Activities will include three workshops, focusing on constructing expanders and extractors, leveraging weak pseudorandomness properties and exploiting the structure-randomness dichotomy. Applications forjunior research fellowships close on 15th December. 3rd November 2015The third instalment of our Bristol-Oxford 1-day meeting in additive combinatorics is happening today! Please clickhere for the programme. 15th September 2015We are launching a brand new arXiv overlay journal calledDiscrete Analysis, which is an open-access mathematical journal with an emphasis on areas of mathematics that are broadly related to additive combinatorics, including harmonic analysis, ergodic theory, topological dynamics, growth in groups, analytic number theory, combinatorial number theory, extremal and probabilistic combinatorics, combinatorial geometry, convexity, metric geometry, and parts of theoretical computer science. WhileDiscrete Analysis has a conventional editorial board and refereeing process, it does not host the articles it accepts and instead simply links to preprints that are posted on the arXiv. For a more comprehensive explanation of what the journal is trying to achieve, see Tim Gowers'sblog post. The journal is now soliciting submissions and hopes to publish its first issue in early 2016. 1st September 2015After many years I've finally got round to updating mypersonal roadmap. New features include links to blogs and videod conference talks which may be of interest to visitors of this site. 23rd March 2015Following on from ourinaugural event in September 2014, we are pleased to announce that we will be holding asecond 1-day meeting in additive combinatorics on Thursday, 23rd April 2015, this time hosted by the University of Oxford. 18th August 2014A new survey article entitled 'Finite field models in arithmetic combinatorics--ten years on' is nowonline. It attempts to follow in the footsteps of Ben Green's influential expository piece from almost a decade ago, and covers some more recent results including the elegant proof of Plünnecke's inequality by Petridis, Croot-Sisask almost-periodicity, Sanders's log-bound for Bogolyubov's lemma as well as the latest developments in higher-order Fourier analysis. 13th August 2014This autumn I will be teaching a graduate course on the 'Analysis of points and lines' through theTaught Course Centre, a platform Bristol shares with Bath, Imperial, Oxford and Warwick. Lectures take place 2-4pm on Friday afternoons starting 17th October. A tentative syllabus and further information are now available from thecourse website. 13th May 2014This ad is for locals only. On Saturday, 14th June 2014 I will be playing in a concert with theBrunel Sinfonia, starting at 7:30pm at Victoria Rooms. The programme is sure to please. Mussorgsky - Pictures at an Exhibition 23rd March 2014I am pleased to announce that we will be holding a1-day additive combinatorics meeting at Bristol on Thursday, 18th September 2014. The main speakers are Juanjo Rue, Tom Sanders, Mark Walters and Thomas Bloom. The first talk starts at 11am and there will be a reception followed by a conference dinner in the evening. The event is made possible by a grant from the LMS and the generous support of the Heilbronn Institute. Further details are available on theconference website. 12th December 2013Video recordings of the many excellent talks at last week's Simons Institute workshop on 'Neo-classical methods in discrete analysis' are now available from the workshop website. 8th October 2013Due to technical issues in more than one participating node, the start of my graduate course 'Introduction to additive combinatorics' in theTaught Course Centre has been delayed by one week. The first session will now take place at 9am on Tuesday, 15th October. Apologies for the late notice. 6th September 2013There are still a few free spaces left at the Simons Institute workshop 'Neo-classical methods in discrete analysis', which will be held at the brand newSimons Institute for the Theory of Computing in Berkeley from 2nd to 6th December 2013. Those interested in participating are asked to register on the workshop webpage as soon as possible. My co-organiserLuca Trevisan and I are very excited about how the programme is shaping up! 30th August 2013As of this weekend I am officially back in the UK, as aHeilbronnreader in combinatorics and number theory at the University of Bristol. My French and Cambridge email accounts remain operational, but I should prefer it if you used my new Bristol account for work-related purposes. 11th May 2013Together withEmmanuel Breuillard,Ben Green,Jozsef Solymosi andTerence Tao, I am organising one of the workshops during IPAM's semester-long programme 'Algebraic techniques for combinatorial and computational geometry'. The workshop's topic is 'Finding algebraic structures in extremal combinatorial configurations', and it will be held in Los Angeles from 19th to 23rd May 2014. A preliminary (and incomplete) list of speakers is now available, and applications for funding to attend the workshop, targeted especially at early-career researchers, are now open. For details see theworkshop website. 3rd December 2012At 2pm I'll be defending my habilitation thesis at the University Paris-Sud (Orsay), room 113-115 in building 425. The committee consists of Emmanuel Breuillard, Etienne Fouvry, Ben Green, Harald Helfgott, Bernard Host and Alain Plagne, and the thesis itself is available from my publications page. 25th October 2012On thearXiv this week is joint work withEli Ben-Sasson,Noga Ron-Zewi andMadhur Tulsiani. We give a new sampling-based and L^p norm-free proof of Croot and Sisask's almost-periodicity lemma. As an application we prove an algorithmic version of Sanders's quasipolynomial Boglyubov lemma. This allows us to improve the running time of our previous "quadratic Goldreich-Levin algorithm" (joint work with Madhur Tulsiani from last year), which computes the large quadratic Fourier coefficients of a function with high probability. 17th October 2012As of this evening a new preprint on an extension of the Tao-Ziegler theorem on polynomial progressions in the primes will be available on thearXiv. Together withThái Hoàng Lê, we prove that any subset of the primes of relative positive density contains a polynomial configuration x+P_1(p-1), . . ., x+P_k(p-1), where x is an integer, p is a prime and P_1, . . . , P_k are polynomials with integer coefficients and zero constant term. Also, if you are a regular visitor you will have noticed that the website has had a facelift, having stuck with the same design for almost a decade. While some of the pages have been updated, the content hasn't changed much, and I hope you'll find everything in its usual place. 10th June 2012In order to take full advantage of all those excellent mathematicians who will be visiting Paris at the start of July on the occasion of the conferenceAdditive Combinatorics in Paris 2012,Bernadette Charron-Bost and I are organizing a one-day colloquium on discrete mathematics and computer science. The event will take place at Ecole polytechnique on July 4th, and speakers include Noga Alon, Prasad Tetali and Jacob Fox. More information is available fromthis page. 25th May 2012Our additive combinatorics group has been awarded a major 3-year grant by the FrenchAgence Nationale de la Recherche under theANR Blanc scheme. The project runs under the name "Combinatoire Additive: Ensembles, Séquences et Applications Remarquables" (CAESAR) and includes amongst othersEric Balandraud,Emmanuel Breuillard,Benjamin Girard,Andrew Granville (as member of the CNRS international unit at Montréal),Harald Helfgott andWolfgang Schmid. It is led byAlain Plagne. 24th March 2012The text for theBourbaki seminar on polynomial configurations in the primes, which I will be giving later today, is now available on mypreprints page. A related popular mathematics article which I have written can be found on the beautiful French websiteImages des mathématiques. 21st March 2012Endre Szemerédi has been awarded theAbel Prize 2012. Congratulations! 2nd November 2011I am organizing a study group on arithmetic combinatorics (GTCA), open to all interested mathematicians in the Paris area. It will be held every other Tuesday at 4pm. For more information, see thisnew page. 14th July 2011Together with Alain Plagne, Eric Balandraud, Benjamin Girard and Wolfgang Schmid I am organizing a week-long conference entitledAdditive Combinatorics in Paris 2012, to be held in memory of Yahya ould Hamidoune at theInstitut Henri Poincaré during the second week of July next year. We have an amazing list of keynote speakers lined up, and hope that many of you will be able to participate. An official announcement will be sent out a few weeks from now. For more information, including a registration form, please visit ourwebsite. 24th May 2011Madhur Tulsiani and I have uploaded our paper "Quadratic Goldreich-Levin Theorems" to thearXiv. We give an algorithmic version of the U^3 inverse theorem and various refinements thereof, allowing us to compute for the fist time the large "quadratic Fourier coefficients" of a given bounded function. For an extended abstract and further links see mypreprints page. 24th November 2010From personal experience I know that the French academic system can seem rather intransparent and impenetrable from the outside. I have therefore listed some opportunities for young mathematicians to spend some time in France to pursue their research interests on thisnew page. 28th July 2010As of the start of the academic year, I will be a Hadamard Associate Professor atEcole Polytechnique in Paris. As a result this website will probably soon experience a linguistic transformation. 10th February 2010Three new joint papers with Tim Gowers have found their way onto the arXiv today. We give a strong quadratic decomposition theorem in both vector spaces over finite fields (arXiv:1002.2209) and the cyclic group modulo a prime (arXiv:1002.2210), as well as a general regularity-type decomposition into polynomial phases in the former setting (arXiv:1002.2208). As a consequence we are able to prove the general case of an earlier conjecture of ours regarding the true complexity of a system of linear forms. For more details please seePapers and Preprints. 8th January 2010I'll be teaching a graduate course entitled592: Topics in Probability and Ergodic Theory this semester, with emphasis on arithmetic structures in subsets of the integers and the primes. 2nd November 2009On Thursday, November 5 I'll be giving a lecture in the series 'Mathematical Careers and Ideas' for undergraduates at Rutgers. My title will beCalculus against the swine flu: modelling the spread of infectious disease. Epidemiology is certainly not my speciality, but it doesn't take much calculus to draw some interesting and sometimes counterintuitive conclusions about the spread of influenza (and similar diseases). There is free pizza after the talk! Please click on the link above for further details. 1st July 2009My teaching pages have been updated. In particular, there is a new section entitledStudent Resources, which contains what I believe to be useful links and information for mathematically inclined students at Rutgers and elsewhere. Also, I have made some preliminary information available on477: Mathematical Theory of Probability and152: Calculus II for the Mathematical and Physical Sciences, which I will be teaching at Rutgers in the fall. 28th June 2009Having neglected my violin for a few months, I am excited to announce that I'll be part of theMercury Orchestra's second summer season. Mercury Orchestra Tickets are now on sale online at theHarvard Box Office. 20th May 2009For experimental purposes I have installedjsMath on myPreprints page, which may now display a font warning when you visit for the first time. The idea is that jsMath displays mathematical symbols flexibly and much better than ordinary html, so I thought I'd give this a go. Feedback is always welcome. 5th March 2009A long overdue overhaul of this website has taken place in order to create room for more mathematics. My private pages are temporarily unavailable. 3rd February 2009The Discrete Math Seminar at Rutgers has its ownwebpage this semester. The program is now finalised and includes speakers and abstracts through the end of April. 5th October 2008Ben Green and I have submitted a short note on Elkin's improvement of Behrend's construction to thearXiv:0810.0732. 26th September 2008I do not get to vote in this country. Please do it for me. 1st August 2008This summer I have been involved as a mentor in the Summer Program for Undergraduate ResearchSPUR at MIT. Both my students Cordelia Link and Yuncheng Lin won a Rogers Family Award for their projects, details of which will be made available in the near future. Watch this space. 30th June 2008A program of 20th century French classics with pianist Albert Kim and theMercury Orchestra in the heart of Harvard Square. Mercury Orchestra Tickets are now on sale online at theHarvard Box Office. Out of all orchestras I've ever played with, this one has by far the largest and best viola section. (I expect that especially musical readers from Cambridge, UK, will appreciate the content of this statement!) 24th June 2008This coming weekend I'll be performing with theCambridge Symphony Orchestra in a summer pops concert hosted by Harvard's JFK School of Government. Cambridge Symphony Orchestra The program includes Copland's 'Lincoln Portrait', 'Harry Potter and the Goblet of Fire', 'StarWars', 'The Washington Post March' and 'The Ride of the Valkyries' amongst many other popular classics. Admission is free. Come along! 20th June 2008This summer I am teaching Advanced Calculus at MIT as part of theMITES 2008 program. Further details are available from myteaching page. 13th February 2008My fate for the coming academic year has been decided: During the fall I will be a postdoctoral fellow attending the programErgodic Theory and Additive Combinatorics at MSRI in Berkeley. In January I'll be taking up an assistant professorship atRutgers University. Some might simply call it a postdoc. 8th February 2008I am co-organizing a series of seminars at the IAS this term, mainly of an ergodic theory/analysis flavour. A preliminary list of speakers and abstracts can be found underMathematics - IAS Analysis Seminar. 1st November 2007My joint paper with Tim Gowers on 'The true complexity of a system of linear equations' appeared on the arXiv today. The abstract is available in the sectionMathematics - Preprints, which also contains a link to the arXiv download for the paper. 5th September 2007My new contact details can be found in the sectionAbout Me - Contact. I have completed my move to Princeton, NJ, where I will be a member of theInstitute for Advanced Study until May 2008. 10th June 2007I have signed up to run 5K in this year's 'Race for Life' in Cambridge on Sunday, 8th July. OK, it's not a marathon. If you'd still like to sponsor me (in aid of 'Cancer Research UK'), you can do so atwww.raceforlifesponsorme.org/juliawolf until 22nd July 2007. 3rd June 2007My website is back after lying dormant for over a year. To provide a certain amount of continuity, many news items from the previous incarnation of this website have remained on this page. The layout has changed very little, although you will find that a number of sections are now password-protected. 27th June 2005Yet another one, but possibly my last one for quite some time: Cambridge Graduate Orchestra Come. Tickets available on the door or online. For more details see the websitewww.cambridgegraduateorchestra.com or have a look at theposter! 13th February 2005I had given up advertising concerts that I am playing in, but the following event marks an exception: Cambridge Graduate Orchestra This is a truly wonderful programme, and it would be great to have a good audience! For more details, or to purchase tickets online, visitwww.cambridgegraduateorchestra.com. On a slightly different (and more scientific) note, it has been brought to my attention that the Department of Experimental Psychology at Cambridge is currently running a project entitledIs there a maths gene?. Whatever your level of mathematical ability, click on the link above to participate in the high-profile survey (you may have seen parts of it in The Guardian). You will be entered into a draw to win tickets to Trinity May Ball, it's fun and they even tell you your score and promise to inform you of the overall result of the experiment - go on! 19th October 2004New stuff! I've added pictures from the AIM workshop in San Francisco (Photographs - San Francisco) and my trip to Chile (Photographs - Chile). There is also a new page with links to some of my friends' pages (About Me - Friends). If you are supervised by me, you might like to check out the updated section Mathematics - For Supervisees. And finally, tickets for the Clare College Music Society Michaelmas Term Concert are on sale now! For more detailsclick here. 3rd May 2004I shall abuse this space to advertise two concerts that I will be playing in over the next few weeks. Orchestra on the Hill and Clare College Music Society May Week Concert 10th April 2004Many pages have been updated over the past few days, take a look! 26th January 2004On Monday, 2nd February I will be giving a joint talk (with Sir Nicholas Barrington) on 'The Fascination of Numbers'. I will also be singing in Clare's Lent Term concert: Mozart's Requiem 26th September 2003The big news is that (after many attempts and compromises) I have finally managed to set up this website! Julia PS: If you can't see a menu on the left but would like to see one, please enable JavaScript. | ||||
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