# Visiting Researchers

Our visiting researchers will be hosted in SMRI at the University of Sydney on the following dates. Some researchers will also be visiting other institutions during their stay in Australia. For more information, please read the SMRI bulletins to learn about successful applicants to the International Visitor Program.

**2019**

**8 May – 24 Aug: Xun Xie** (Chinese Academy of Sciences)

*Research interests:* Representations of algebraic groups and Hecke algebras

**8 May – 31 Aug: Minhua Liu** (Chinese Academy of Sciences)

*Research interests: *Representation theory of Lie algebras and algebraic groups, Kazhdan-Lusztig theory and perverse sheaves

**1 Jul – 31 Aug: Adam Parusiński** (University of Nice) – IVP 2018

*Research interests:* Singularities, stratifications, real algebraic geometry

**23 Jul – 20 Sep: Barbara Brandolini** (University of Naples) – IVP 2018

*Research interests:* Weak solutions, anisotropic equations, Poincaré-Wirtinger inequality, Wiener spaces

**25 Jul – 24 Aug: Claude Viallet** (Sorbonne University) – IVP 2018

*Research interests:* Discrete integrable systems, algebraic structures in mathematical physics

**29 Jul – 25 Aug: Joseph Maher** (CUNY College, Staten Island) – IVP 2018

*Research interests*: Geometric topology, random walks

**31 Jul – 29 Sep: Vidit Nanda** (University of Oxford)

*Research interests:* Algebraic topology, Morse theory, homological algebra

**1 Aug – 15 Sep: Udo Baumgartner** (DHBW Lörrach)

*Research interests*: Totally disconnected locally compact topological groups, Lie groups, algebraic groups, buildings and group actions on graphs

**5 Aug – 22 Aug: Petra Schwer** (University of Magdeburg)

*Research interests*: Geometric group theory, building and generalizations, Coxeter combinatorics, combinatorial representation theory

**5 Aug – 31 Oct: Jan Obł****oj** (University of Oxford) – IVP 2019 round 1

*Research interests: *Probability theory and financial mathematics

**26 Aug – 6 Sep, 4 Nov – 8 Nov: Eric Ragoucy** (Laboratoire d’Annecy-le-Vieux) – IVP 2018

*Research interests*: Bethe ansatz, W-algebras, out-of-equilibrium statistical physics

**2 Sep – 31 Oct: Dror Bar-Natan** (University of Toronto) – IVP 2018

*Research interests: *Quantum algebra, knot theory

**2 Sep – 15 Dec: Daryl Cooper** (University of California, Santa Barbara) – IVP 2019 round 1

*Research interests:* Topology, geometric group theory, 3-manifolds, surface subgroups, hyperbolic geometry, projective structures, non-standard analysis

**2 Sep 2019 – 29 Feb 2020: Linyuan Liu** (Université Pierre et Marie Curie)

*Research interests:* Geometric representation theory

**23 Sep – 13 Oct, 28 Oct – 3 Nov: Jitesh Gajjar** (University of Manchester) – IVP 2018

*Research interests: *Fluid dynamics, asymptotics

**1 Oct – 31 Oct: William Casselman** (University of British Columbia) – IVP 2019 round 1

*Research interests:* Automorphic forms, representation theory, algorithms for Lie algebras and Coxeter groups

**1 Nov – 15 Nov: Andrea Bertozzi** (University of California, Los Angeles) – IVP 2019 round 1

*Research interests:* Nonlinear PDE, fluid dynamics, social science models, swarming, image processing and data science

**1 Nov – 1 Dec: Ilya Shkredov** (Steklov Mathematical Institute) – IVP 2019 round 1

*Research interests:* Additive combinatorics, number theory, combinatorial and ergodic number theory

**4 Nov – 8 Nov: June Huh** (Institute for Advanced Study, Princeton) – 2019 Simon Marais Lecturer

*Research interests:* Geometry, topology and combinatorics of algebraic varieties

**11 Nov – 15 Nov: Helen Byrne** (University of Oxford) – SMRI Advisory Board member

*Research interests:* Mathematical and computational models for biomedical systems

**12 Nov – 15 Nov: Cheryl Praeger** (University of Western Australia) – SMRI Advisory Board member

*Research interests:* Group actions and their applications in algebraic graph theory and to combinatorial designs, algorithms for group computation, statistical group theory and algorithmic complexity

**18 Nov – 15 Dec:** **Frédéric Campana** (University of Lorraine) – IVP 2019 round 1

*Research interests:* Complex geometry, bimeromorphic classification of compact Kahler and complex projective manifolds, arithmetic geometry and complex hyperbolicity, fundamental groups, twistor spaces, algebraicity of foliations, moduli

**28 Nov 2019 – 23 Feb 2020: Nicolás Libedinsky** (University of Chile)

*Research interests:* Soergel bimodules, diagrammatical category theory, braid group actions and their categorical versions, modular representations of finite or algebraic groups, Kazhdan-Lusztig theory, categorification, quantum knot invariants

**2020**

**7 Jan – 31 Jan: Maksym Fedorchuk** (Boston College) – IVP 2019 round 1

*Research interests:* Moduli spaces of curves, stability of projective varieties, geometric invariant theory

**7 Jan – 2 Feb: Paolo Rossi** (Università degli Studi di Padova) – IVP 2019 round 1

*Research interests:* Moduli spaces of curves, classical and quantum integrable systems, Frobenius manifolds and mirror symmetry, geometric invariants from enumerative geometry, symplectic topological invariants

**15 Jan – 31 May: Tom Bridgeland** (University of Sheffield) – IVP 2019 round 1

*Research interests:* Algebraic geometry, homological algebra, mirror symmetry

**15 Jan – 15 Mar: Laurentiu Maxim** (University of Wisconsin, Madison) – IVP 2019 round 1

*Research interests: *Perverse sheaves and applications to singularities, topology of hypersurface singularities, characteristic classes of singular spaces, Hodge theory and birational geometry

**20 Jan – 5 Feb, 7 Apr – 20 Apr: Nancy Reid** (University of Toronto)

*Research interests:* Theoretical statistics, statistical inference, likelihood methods, asymptotic theory of statistics, foundations of inference, interface between statistics and data science, applications of statistical theory

**24 Jan – 07 Feb: Ivan Graham** (University of Bath) – IVP 2019 round 1

*Research interests:* Numerical analysis, partial differential equations, uncertainty quantification

**3 Feb – 1 Jul: Bob Rink** (Vrije Universiteit Amsterdam)

*Research interests:* Dynamical systems, bifurcation theory, equivariant dynamics, coupled cell networks, synchronization, coupled oscillators, Hamiltonian systems, KAM theory, Aubry-Mather theory, monotone recurrence relations

**6 Feb – 16 Feb: Zuhaila Ismail **(Universiti Teknologi Malaysia) – IVP 2019 round 1

*Research interests:* Non-Newtonian fluid mechanics, physiological flows, boundary layer flow and convective heat transfer

**18 Feb – 18 Apr: Ian Melbourne** (University of Warwick) – IVP 2018

*Research interests:* Lévy processes, deterministic dynamical systems, anomalous diffusion

**25 Feb – 5 Jun: Dave Smith** (Yale-NUS College) – IVP 2019 round 1

*Research interests:* Spectral theory of differential operators, well-posedness of initial boundary value problems for linear PDE, complex boundary conditions

**2 Mar – 15 Mar (tentative): Peter Duck** (University of Manchester) – IVP 2019 round 1

*Research interests:* Theoretical and computational fluid dynamics, financial mathematics

**2 Mar – 1 May: Monique Jeanblanc** (University of Evry) – IVP 2019 round 1

*Research interests: *Enlargement of filtrations, portfolio optimization, default risk

**25 Mar – 10 Apr: Waltraud Lederle** (UC Louvain) – IVP 2019 round 1

*Research interests:* Geometric group theory, totally disconnected locally compact groups, groups (almost) acting on trees, rigidity theory

**6 Apr – 19 Apr: Darren Crowdy** (Imperial College, London) – IVP 2019 round 1

*Research interests:* Applied and computational complex analysis, special function theory, fluid and solid mechanics

**30 Apr – 5 Jun: Gregory Berkolaiko** (Texas A&M University) – IVP 2019 round 1

*Research interests:* Spectral theory of differential operators and graphs and networks

**Past visitors**

**1 May – 17 May: Matthias Lesch** (University of Bonn) – IVP 2018

*Research interests: *Elliptic operators, heat equation methods, spectral zeta functions, spectral flow, unbounded Kasparov modules

**6 May – 18 May: Ivan Losev** (University of Toronto)

*Research interests: *Representation theory and its connections to algebraic and symplectic geometry and combinatorics

**6 May – 1 Jun: Gwyn Bellamy** (University of Glasgow) – IVP 2017

*Research interests:* Representation theory and its interaction with geometry

**8 May – 27 May: Alex Casella** (Florida State University)

*Research interests:* Low-dimensional topology, hyperbolic manifolds, embedded surfaces, Teichmüller theory, geometric structures

**8 May – 27 May: Charles Katerba** (Montana State University)

*Research interests:* Low-dimensional topology, character varieties, interplay between hyperbolic 3-manifolds and number theory

**8 May – 10 Jun: Leonardo Maltoni** (Sorbonne University)

*Research interests:* Iwahori-Whittaker sheaves and local Langlands correspondence

**20 May – 3 Jun: Paul Griffiths** (Coventry University)

*Research interests:* Non-Newtonian fluid mechanics, boundary layers and complex rotating flows

**27 May – 9 Jun: Henry Segerman** (Oklahoma State University)

*Research interests: *Three-manifolds and triangulations, hyperbolic geometry, mathematical visualisation, 3D printing, virtual and augmented reality

**27 May – 11 Jun: Vidit Nanda** (University of Oxford)

*Research interests:* Algebraic topology, Morse theory, homological algebra

**27 May – 16 Jun: John Griesmer **(Colorado School of Mines)

*Research interests:* Ergodic theory, additive combinatorics, harmonic analysis

**27 May – 28 Jun: Vladimir Dragović** (University of Texas, Dallas) – IVP 2018

*Research interests:* Integrable dynamical systems, algebraic curves, quantum Yang-Baxter equation, Painlevé equations, billiards

**27 May – 28 Jun: Ignat Soroko** (Louisiana State University)

*Research interests:* Geometric group theory and low-dimensional topology

**11 Jun – 14 Jun: Christine Lee** (University of South Alabama)

*Research interests*: Knot theory, quantum topology, 3-manifolds

**17 Jun – 28 Jun: Victoria Vedyushkina **(Moscow State University)

*Research interests*: Integrable Hamiltonian systems and billiards

**17 Jun – 30 Jun: Sergey Dolgov** (University of Bath) – IVP 2018

*Research interests: *Numerical linear algebra, high-dimensional approximations, uncertainty quantification

**21 Jun – 30 Jun: Vered Rom-Kedar** (Weizmann Institute)

*Research interests:* Impact systems, Fermi acceleration and time dependent billiards, steep billiard-like potentials, transport theory, chaotic fluid mixing in the ocean, modelling and medicine

**24 Jun – 28 Jun: Sira Gratz** (University of Glasgow)

*Research interests:* Cluster algebras and cluster categories, representation theory of algebras and triangulated categories

**24 Jun – 28 Jun: Greg Stevenson** (University of Glasgow)

*Research interests: *Abstract homotopy theory, noncommutative derived algebraic geometry, tensor triangular geometry, commutative algebra, representation theory

**26 Jun – 29 Jun: Roman Cherniha** (National Academy of Sciences of Ukraine)

*Research interests:* Non-linear PDEs, Lie and conditional symmetries, exact solutions and their properties, analytical and numerical solutions of boundary value problems, development of mathematical models