I am a postdoc fellow at the Einstein Institute of Mathematics at the Hebrew University of Jerusalem . My mentor is Zemer Kosloff.

From August 2021 to August 2023, I was a postdoc fellow in the Department of Mathematics at the Ben-Gurion University of the Negev . My mentors were Tom Meyerovitch and Yaar Solomon .  

In May 2021, I graduated with a Ph.D, degree in Mathematics from  University of Iowa. My advisors were Sergii Bezuglyi and Palle Jorgensen.  

I work in the area of ergodic theory, dynamical systems and related topics. 

Office: 315, Manchester Building, Edmond J. Safra Campus 

Email: shreysanadhya at gmail dot com 

               shrey dot sanadhy at mail dot huji dot ac dot il

Papers and Preprints :  

• Multidimensional local limit theorem in deterministic systems and an application to non-convergence of polynomial multiple averages, submitted (with Zemer Kosloff), [arXiv:2409.05087].

• Periodicity of joint co-tiles in Z^d, (with Tom Meyerovitch and Yaar Solomon), Discrete Analysis 2024 :13, 32 pp. [arXiv:2301.11255].

• Bratteli diagrams in Borel dynamics, (with Sergey Bezuglyi, Palle Jorgensen and Olena Karpel), Groups Geometry and Dynamics (2025), DOI 10.4171/GGD/849  [arXiv:2212.13803].

• A note on reduction of tiling problems, (with Tom Meyerovitch and Yaar Solomon) Israel Journal of Mathematics (2025). https://doi.org/10.1007/s11856-025-2716-3 [arXiv:2211.07140].

• Substitution-dynamics and invariant measures for infinite alphabet-path space, (with Sergey Bezuglyi and Palle Jorgensen), Advances in Applied Mathematics, Volume 156, 2024, 102687, ISSN 0196-8858, https://doi.org/10.1016/j.aam.2024.102687. [arXiv:2203.14127].

• A shrinking target theorem for ergodic transformations of the unit interval,  Discrete and Continuous Dynamical Systems, doi: 10.3934/dcds.2022042 . [arXiv:2105.00301].

• Coboundaries of commuting Borel automorphisms, Opuscula Math. 41, no. 5 (2021), 667-683 [arXiv:2006.02925].

• Cohomology of hyperfinite Borel actions (with Sergii Bezuglyi), Groups, Geometry, and Dynamics, Volume 15, Issue 4, 2021, pp. 1363–1398  [arXiv:2001.09205].

Thesis : 

• Cohomological properties of Borel automorphisms and substitutions on infinite alphabet, Spring 2021. 

(Recipient of 2021 Bor-Luh Lin Thesis Award, University of Iowa. )

Selected talks:

• University of North Carolina at Chapel Hill, Multidimensional LCLT in deterministic systems and an application to non-convergence of polynomial multiple averages. Ergodic Theory Seminar, November 19, 2024. 

• Penn State University,  Multidimensional LCLT in deterministic systems and an application to non-convergence of polynomial multiple averages. Semi-annual Workshop in Dynamical Systems and Related Topics,  November 14–17, 2024. 

• Joint Mathematics Meetings 2024,  San Fransisco Universality for R^d-flows;  AIM Special Session on Little School Dynamics, January 3, 2024. 

• Einstein Institute of Mathematics, The Hebrew University of Jerusalem, Periodicity of joint cotiles in Z^d, Dynamics seminar,  Dec 23, 2023.

• University of Exeter, Universality for R^d-flows; Dynamics Seminar, July 27, 2023. 

• University of Oxford, Periodicity of joint cotiles in Z^d, Hatfest- Celebrating the discovery of an aperiodic monotile, July 21, 2023.

• Davidson College, Davidson N.C., Universality for R^d-flows, Carolina Dynamics Symposium 2023, April 15, 2023.

• 2023 Spring Eastern Sectional Meeting (Virtual), Periodicity of joint co-tiles in Z^d, Special Session on Fractal Geometry and Dynamical Systems, April 1, 2023,

• Technion - Israel Institute of Technology, Universality for R^d-flows; Groups, Dynamics and Related Topics seminar, May 15th, 2023.

• University of Vienna, Universality for R^d-flows, 36 th Summer Topology Conference,  July 20, 2022. 

• Einstein Institute of Mathematics, The Hebrew University of Jerusalem,  Universality for R^d-flows,  Dynamics seminar, April 12, 2022. 

• Tel Aviv University, Borel hyperplane absolute winning sets in R^d,  Seminar on homogeneous dynamics and applications, Dec 16, 2021.

• University of Maryland, Substitution on infinite alphabet and generalized Bratteli-Vershik model, Workshop on Dynamical Systems and Related Topics, April 11, 2021 (Video link).

• McGill University, Generalized Bratteli Vershik model for substitution on infinite alphabets, Descriptive Dynamics and Combinatorics Seminar, March 10, 2021. 

• Ben Gurion University of the Negev, Substitution on infinite alphabets and generalized Bratteli-Vershik models, Probability and Ergodic Theory (PET) seminar, Feb 11, 2021, (Video link). 

• CIRM, Bratteli-Vershik model for substitution dynamical systems on countably infinite alphabet, Algebraic and Combinatorial Invariants of Subshifts and Tilings, Jan 14, 2021, (Video link , fwd to 198 minute mark in the video) .

• University of Utah, Bratteli-Vershik models for Cantor and Borel dynamical systems, Seminar in Ergodic Theory,  May 19, 2020, (Video link). 

• Virtual Math Fest, Commuting Borel Automorphisms, Symposium on Topology, Geometry and Dynamics, July 23, 2020 (Video link).

• Indiana University–Purdue University Indianapolis (IUPUI), Commuting Borel automorphisms, Dynamical system seminar, March 11, 2020.

• University of Alabama at Birmingham (UAB), Cocycles of Borel automorphism groups, Spring Topology and Dynamical Systems Conference, March 16, 2019.

• University of Maryland, Cocycles of Borel automorphism groups, Workshop on Dynamical Systems and Related Topics, April 13, 2019.

• Southern Illinois University Edwardsville,  Cocycles of Borel automorphism groups, Colloquium-Math department, 10/26/2018.

• University of South Dakota, Cocycles of Borel automorphism groups, Analysis Seminar, 10/17/2018.

Courses taught as a teaching assistant at University of Iowa

• MATH 1460 : Calculus for the Biological Sciences , Fall 2016, Fall 2020.

• MATH 1440 : Mathematics for the Biological Sciences, Spring 2017, Fall 2017.

• MATH 1380 : Calculus and Matrix Algebra for Business, Spring 2018.

• MATH 1850 : Calculus I, Summer 2018, Fall 2018.

• MATH 3770 : Fundamental Properties of space and functions, Spring 2019.

• MATH 1560 : Engineer Math II: Multi-variable Calculus, Spring 2020.

• MATH 5200 : Introduction to Analysis I, Fall 2020 

Course taught as an instructor at University of Iowa

• MATH 1850 Calculus I, Summer 2016, TRIO Upward Bound program (college preparatory program for income qualified and/or first-generation college students).

Conferences and Workshops attended

• Nilpotent structures in topological dynamics, ergodic theory and combinatorics, Będlewo, Poland June 4-10,2023

• Carolina Dynamics Symposium 2023, Davidson College, Davidson, N.C., April 14-16, 2023

• 36 th Summer Topology Conference, University of Vienna, July 18-22, 2022.

• Dynamics Week in Jerusalem, Einstein Institute of Mathematics, Hebrew University, July 3-5, 2022.

• Action Now Wandering Seminar,  Weizmann Institute of Science,  December 20, 2021.

• Joint Math Meeting of AMS and MAA, Session on Groups and Topological Dynamics, Denver 2020.

• Houston summer school on dynamical systems, University of Houston, 2019.

• Workshop on Dynamical Systems and Related Topics, University of Maryland, 2019 and 2018.

• Spring Topology and Dynamical Systems Conference, University of Alabama at Birmingham, 2019.

• Midwest Dynamical Systems Early Career Conference, The Ohio State University, May 2019.

• Semi-annual Workshop in Dynamical Systems and Related Topics, Penn State University, 2019 and 2018.

• Midwest Dynamical Systems Conference, University of Illinois at Chicago, Nov 2019.

Poster Presentation

•  Midwest Dynamical Systems Early Career Conference (Online Conference), 

Bratteli-Vershik model for substitutions on infinite alphabets, Nov 2020. (Video link) (Poster link).

• Penn State University, Semi-annual Workshop in Dynamical Systems and Related Topics,  Commuting Borel automorphisms,September 2019.

• The Ohio State University, Midwest Dynamical Systems Early Career Conference, Cohomology of Borel dynamical systems, May 2019.