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Florian Richter

Research

Research Fields

Ergodic Theory, Combinatorics, Number Theory

List of Publications

Open-access preprints and e-prints of all my publications are freely available on arXiv ↗ .

  • Sums and products in sets of positive density
    Florian K. Richter
     submitted, 35 pages
    link ↗

  • Asymptotic independence of Ω(n)  and Ω(n+1) along logarithmic averages
    Dimitrios Charamaras, Florian K. Richter
    submitted, 44 pages
    link ↗

  • The Density Finite Sums Theorem
    Bryna Kra, Joel Moreira, Florian K. Richter, Donald Robertson
    to appear in Inventiones mathematicae, 28 pages
    link ↗

  • Problems on infinite sumset configurations in the integers and beyond
    Bryna Kra, Joel Moreira, Florian K. Richter, Donald Robertson
    Bulletin of the American Mathematical Society, Vol. 26 (2025), Nr. 4, pp. 537–574
    link ↗

  • Interpolation sets for dynamical systems
    Andreas Koutsogiannis, Anh N. Le, Joel Moreira, Ronnie Pavlov, Florian K. Richter
    Transactions of the American Mathematical Society, Vol. 378 (2025), Nr. 2, pp. 1373–1400
    link ↗

  • A proof of Erdős’s B+B+t conjecture
    Bryna Kra, Joel Moreira, Florian K. Richter, Donald Robertson
    Communications of the American Mathematical Society, Volume 4 (2024), pp. 480–494
    link ↗

  • On the local Fourier uniformity problem for small sets
    Adam Kanigowski, Mariusz Lemańczyk, Florian K. Richter, Joni Teräväinen
    International Mathematics Research Notices, Volume 2024, Issue 15, pp. 11488–11512
    link ↗

  • On the maximal spectral type of nilsystems
    Ethan Ackelsberg, Florian K. Richter, Or Shalom
    Proceedings of the American Mathematical Society, Series B, Vol. 11 (2024), pp. 469–480
    link ↗

  • A spectral refinement of the Bergelson-Host-Kra decomposition and new multiple ergodic theorems — CORRIGENDUM
    Joel Moreira, Florian K. Richter
    Ergodic Theory and Dynamical Systems, Volume 44 (2024), Issue 6, pp. 1724–1728
    link ↗

  • Infinite Sumsets in Sets with Positive Density
    Bryna Kra, Joel Moreira, Florian K. Richter, Donald Robertson
    Journal of the American Mathematical Society, Volume 37 (2024), pp. 637–682
    link ↗

  • Additive and geometric transversality of fractal sets in the integers
    Daniel Glasscock, Joel Moreira, Florian K. Richter
    Journal of the London Mathematical Society, Volume 109 (2024), Issue 5, e12902
    link ↗

  • Multiple ergodic averages along functions from a Hardy field: convergence, recurrence and combinatorial applications
    Vitaly Bergelson, Joel Moreira, Florian K. Richter
    Advances in Mathematics, Volume 443 (2024), 109597
    link ↗

  • Zero-one laws for eventually always hitting points in mixing systems
    Dmitry Kleinbock, Ioannis Konstantoulas, Florian K. Richter
    Mathematical Research Letters, Volume 30 (2023), Number 3, pp. 765–805
    link ↗

  • Disjointness for measurably distal group actions and applications
    Joel Moreira, Florian K. Richter, Donald Robertson
    Ergodic Theory and Dynamical Systems, Volume 43 (2023), Issue 6, pp. 1952–1979
    link ↗

  • A combinatorial proof of a sumset conjecture of Furstenberg
    Daniel Glasscock, Joel Moreira, Florian K. Richter
    Combinatorica, Volume 43 (2023), pp. 299–328
    link ↗

  • Uniform distribution in nilmanifolds along functions from a Hardy field
    Florian K. Richter
    Journal d’Analyse Mathématique, Volume 149 (2023), pp. 421–483
    link ↗

  • Dynamical generalizations of the Prime Number Theorem and disjointness of additive and multiplicative semigroup actions
    Vitaly Bergelson, Florian K. Richter
    Duke Mathematical Journal, Volume 171 (2022), Number 15, pp. 3133–3200
    link ↗

  • On Katznelson's Question for skew product systems
    Daniel Glasscock, Andreas Koutsogiannis, Florian K. Richter
    Bulletin of the American Mathematical Society, Volume 59 (2022), Number 4, pp. 569–606
    link ↗

  • A new elementary proof of the Prime Number Theorem
    Florian K. Richter
    Bulletin of the London Mathematical Society, Volume 53 (2021), Issue 5, pp. 1365–1375
    link ↗

  • Structure of multicorrelation sequences with integer part polynomial iterates along primes
    Andreas Koutsogiannis, Anh N. Le, Joel Moreira, Florian K. Richter
    Proceedings of the American Mathematical Society, Volume 149 (2021), Number 1, pp. 209–216
    link ↗

  • A decomposition of multicorrelation sequences for commuting transformations along primes
    Anh N. Le, Joel Moreira, Florian K. Richter
    Discrete Analysis, 2021:4, 27 pages
    link ↗

  • Single and multiple recurrence along non-polynomial sequences
    Vitaly Bergelson, Joel Moreira, Florian K. Richter
    Advances in Mathematics, Volume 368 (2020), 107146
    link ↗

  • A Structure Theorem for Level Sets of Multiplicative Functions and Applications
    Vitaly Bergelson, Joanna Kułaga-Przymus, Mariusz Lemańczyk, Florian K. Richter
    International Mathematical Research Notices, Volume 2020 (2020), Issue 5, pp. 1300–1345
    link ↗

  • A proof of a sumset conjecture of Erdős
    Joel Moreira, Florian K. Richter, Donald Robertson
    Annals of Mathematics, Volume 189 (2019), Number 2, pp. 605–652
    link ↗

  • Multiplicative combinatorial properties of return time sets in minimal dynamical systems
    Daniel Glasscock, Andreas Koutsogiannis, Florian K. Richter
    Discrete and Continuous Dynamical Systems, Volume 39 (2019), Number 10, pp. 5891–5921
    link ↗

  • Rationally almost periodic sequences, polynomial multiple recurrence and symbolic dynamics
    Vitaly Bergelson, Joanna Kułaga-Przymus, Mariusz Lemańczyk, Florian K. Richter
    Ergodic Theory and Dynamical Systems, Volume 39 (2019), Issue 9, pp. 2332–2383
    link ↗

  • A generalization of Kátai's orthogonality criterion with applications
    Vitaly Bergelson, Joanna Kułaga-Przymus, Mariusz Lemańczyk, Florian K. Richter
    Discrete and Continuous Dynamical Systems, Volume 39 (2019), Number 5, pp. 2581–2612
    link ↗

  • A spectral refinement of the Bergelson-Host-Kra decomposition and new multiple ergodic theorems
    Joel Moreira, Florian K. Richter
    Ergodic Theory and Dynamical Systems, Volume 39 (2019), Issue 4, pp. 1042–1070
    link ↗ 

  • On the density of coprime tuples of the form $(n,\lfloor f_1(n)\rfloor, \ldots, \lfloor f_k(n)\rfloor)$, where $f_1,\ldots,f_k$ are functions from a Hardy field
    Vitaly Bergelson, Florian K. Richter
    Number Theory – Diophantine Problems, Uniform Distribution and Applications, Festschrift in Honour of Robert F. Tichy’s 60th Birthday, Springer International Publishing (2017), pp. 109–135
    link ↗

  • Revisiting the Nilpotent Polynomial Hales-Jewett Theorem
    John H. Johnson, Florian K. Richter
    Advances in Mathematics, Volume 321 (2017), pp. 269--286
    link ↗

  • Large subsets of discrete hypersurfaces in ℤ^d contain arbitrarily many collinear points
    Joel Moreira, Florian K. Richter
    European Journal of Combinatorics, Volume 54 (2016), pp. 163--176
    link ↗

All authors are assumed to have contributed equally and are listed in alphabetical order. For further information, please refer to the AMS Culture Statement ↗ on authorship practices in mathematics.

Teaching & PhD

Current Phd

Jovan Andreevski, Felipe Osiel Hernández Castro

Past Phd As Director

Dimitrios Charamaras

Courses

Analysis II (English)

MATH-106(en)

The course studies fundamental concepts of analysis and the calculus of functions of several variables.

Ergodic theory

MATH-518

This is an introductory course in ergodic theory, providing a comprehensive overlook over the main aspects and applications of this field.

Number theory I.c - Combinatorial number theory

MATH-337

This is an introductory course to combinatorial number theory. The main objective of this course is to learn how to use combinatorial, topological, and analytic methods to solve problems in number theory.