Ofir Gorodetsky

Since October 2020, I am a Postdoctoral Research Associate in Analytic Number Theory at the University of Oxford, employed by Prof. James Maynard's 'PRIMES' ERC grant.
Starting Fall 2024, I will be an assistant professor at the Technion - Israel Institute of Technology.
Please feel welcome to ask me about math.

Research Interests

Analytic number theory and arithmetic statistics (over number fields and functions fields)
Probabilistic number theory
Random matrix theory
Chebyshev's bias
Smooth and rough numbers
Finite fields and their applications

Publications and accepted manuscripts

  1. A polynomial analogue of Landau's theorem and related problems
    O. Gorodetsky, Mathematika 63 (2017), no. 2, 622-665.
    Journal arXiv

  2. On certain degenerate Whittaker Models for cuspidal representations of GLk.n(Fq)
    O. Gorodetsky, Z. Hazan, Math. Z. 291 (2019), no. 1-2, 609-633.
    Journal arXiv

  3. Roots of Polynomials and the Derangement Problem
    L. Bary-Soroker, O. Gorodetsky, Amer. Math. Monthly 125 (2018), no. 10, 934-938.
    Journal arXiv

  4. q-Congruences, with applications to supercongruences and the cyclic sieving phenomenon
    O. Gorodetsky, Int. J. Number Theory 15 (2019), no. 9, 1919-1968.
    Journal arXiv

  5. Irreducible polynomials over F2r with three prescribed coefficients
    O. Gorodetsky, Finite Fields Appl. 56 (2019), 150-187.
    Journal arXiv

  6. Mean values of arithmetic functions in short intervals and in arithmetic progressions in the large-degree limit
    O. Gorodetsky, Mathematika 66 (2020), no. 2, 373–394.
    Journal arXiv

  7. The variance of the number of sums of two squares in Fq[T] in short intervals
    O. Gorodetsky, B. Rodgers, American Journal of Mathematics 143 (2021), no. 6, pp. 1703-1745.
    Journal arXiv

  8. Chebotarev density theorem in short intervals for extensions of Fq(T)
    L. Bary-Soroker, O. Gorodetsky, T. Karidi, W. Sawin, Trans. Amer. Math. Soc. 373 (2020), 597-628.
    Journal arXiv

  9. Correlation of arithmetic functions over Fq[T]
    O. Gorodetsky, W. Sawin, Math. Ann. 376 (2020), no. 3-4, 1059-1106.
    Journal arXiv

  10. Traces of powers of matrices over finite fields
    O. Gorodetsky, B. Rodgers, Trans. Amer. Math. Soc. 374 (2021), 4579-4638.
    Journal arXiv

  11. On the variance of squarefree integers in short intervals and arithmetic progressions
    O. Gorodetsky, K. Matomäki, M. Radziwiłł, B. Rodgers, Geom. Funct. Anal. 31 (2021), no. 1, 111–149.
    Journal arXiv

  12. Uniform estimates for almost primes over finite fields
    D. Elboim, O. Gorodetsky, Proc. Amer. Math. Soc. 150 (2022), 2807-2822.
    Journal arXiv

  13. New representations for all sporadic Apéry-like sequences, with applications to congruences
    O. Gorodetsky, to appear in Experimental Mathematics.
    Journal arXiv

  14. Multiplicative arithmetic functions and the generalized Ewens measure
    D. Elboim, O. Gorodetsky, to appear in Israel Journal of Mathematics.

  15. Sums of two squares are strongly biased towards quadratic residues
    O. Gorodetsky, to appear in Algebra & Number Theory.

  16. Uniform estimates for friable polynomials over finite fields
    O. Gorodetsky, to appear in Discrete Analysis.
    Accepted version arXiv

  17. Squarefrees are Gaussian in short intervals
    O. Gorodetsky, A. P. Mangerel, B. Rodgers, to appear in Crelle's Journal.
    Journal arXiv


  1. Magic squares, the symmetric group and Möbius randomness
    O. Gorodetsky, submitted.

  2. The variance of integers without small prime factors in short intervals
    O. Gorodetsky, submitted.

  3. Friable integers and the Dickman ρ function
    O. Gorodetsky, submitted.

  4. Friable permutations and polynomials revisited
    O. Gorodetsky, submitted.

  5. Friable integers and de Bruijn's approximation Λ
    O. Gorodetsky, submitted.

PhD Thesis

    The variance of sums of arithmetic functions
    Tel Aviv University Theses (Local copy)


Here you can find the SageMath code that generates the graphs presented in the paper "The variance of the number of sums of two squares in Fq[T] in short intervals". The functions generate_all_graphs() generates the various graphs, but one first must run the MATLAB files 1 and 2 in the same folder.

Contact Details

Office: N2.05
profile for Ofir Gorodetsky at MathOverflow, Q&A for professional mathematicians

Last updated: February 13, 2023.