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The seminars usually take place on Fridays from 12:00–13:00 or 16:00–17:00.  See below for exact time and location.  For further details please contact Jani Virtanen.

### Summer 2022

 Date and location Speaker and topic Wednesday 20 July 2022 16.00 - 17.00 M212 Ryan O'Loughlin (University of Leeds, England) Symbols of compact truncated Toeplitz operators When Sarason initiated the study of truncated Toeplitz operators in 2007 he posed the question, does every bounded truncated Toeplitz operator have a bounded symbol? This was then shown to be negative in 2010 when a bounded truncated Toeplitz operator was constructed which does not possess a bounded symbol. Further work then gave a characterisation of when a bounded truncated Toeplitz operator has a bounded symbol. In this talk I will consider analogous questions looking at the role of continuous symbols for compact truncated Toeplitz operators. Friday 6 May 2022 16:00 – 17:00 M314 Ghazaleh Asghari (University of Reading, England) Fidelity and transversely intersecting Lagrangians We start with a compact Kahler manifold that one can consider as a phase space of a classical dynamical system. We define the Berezin quantization of manifolds as a family of some special Toeplitz operators. We introduce the quantum state associated with an arbitrary submanifold of a compact Kahler manifold and see that if the submanifold is a point, its quantization is a pure quantum state, and otherwise, it is a mixed state in the semi-classical limit. We define some quantum mechanical concepts such as fidelity as a measure of overlap between a pair of quantum states and see that for two intersecting Lagrangian submanifolds, fidelity can detect the transverse intersection.

### Spring 2022

 Date and location Speaker and topic Friday April 22 2022 16:00 – 17:00 M314 (Special Analysis Seminar) Michael Levitin (University of Reading, England) Pólya’s conjecture for the disk: a computer-assisted proof The celebrated Pólya’s conjecture (1954) in spectral geometry states that the eigenvalue counting functions of the Dirichlet and Neumann Laplacian on a bounded Euclidean domain can be estimated from above and below, respectively, by the leading term of Weyl’s asymptotics. Pólya’s conjecture is known to be true for domains which tile the space, and, in addition, for some special domains in higher dimensions. I’ll present a recent joint work with Iosif Polterovich and David Sher in which we prove Pólya’s conjecture for the disk, making it the first non-tiling planar domain for which the conjecture is verified. Along the way, we develop the known links between the spectral problems in the disk and certain lattice counting problems. Our proofs are purely analytic for the values of the spectral parameter above some large (but explicitly given) number. Below that number we give a rigorous computer-assisted proof which converges in a finite number of steps and uses only integer arithmetic. Wednesday April 20 2022 16:00 – 17:00  M113 Alfonso Montes (University of Seville, Spain) Uniqueness sets of unitary weighted composition operators in the Hardy and Bergman spaces Tuesday, April 12 2022 10:00 – 11:00 M113 Frederik Broucke (Ghent University, Belgium) Malliavin’s problem for Beurling generalized primes One of the central topics in the theory of Beurling generalized primes is the relationship between the counting function of the generalized primes and the counting function of the generalized integers. In this talk we discuss the case when one of the two has an asymptotic formula with a so-called Malliavin remainder x exp(-c(\log x)^{alpha}). (Note that power-type remainders x^{theta} are a special case of this.) We indicate what kind of remainder this asymptotic formula implies for the other counting function. We share some recent work on this problem, and discuss a conjecture about the optimal remainders. Friday 11 March 2022 16:00 – 17:00 M108 Sergio Giron Pacheco (University of Oxford, England) Symmetries of simple operator algebras In this talk I will start with an elementary introduction of group actions on the Hyperfinite II_1 factor and their classification results by Connes, Jones and Ocneanu. I will then discuss more generalised notions of actions (in particular anomalous actions), how they fit into the framework of “symmetries”, and their study on the Hyperfinite II_1 factor. I will then turn to C*-algebras and discuss some existence and uniqueness results of these anomalous actions in that setting, this turns out to be more subtle than in the case of von Neumann algebras as K-theoretic invariants come into play. The results I will discuss in the C*-setting are joined work with Samuel Evington. Friday 4 March 12:00 – 13:00 M113 Ed Clark (PhD student) Isosupremic vectorial minimisation problems in $L^\infty$ with general nonlinear constraints In this talk we discuss minimisation problems in $L^\infty$ for general quasiconvex first order functionals, where the class of admissible mappings is constrained by the sublevel sets of another supremal functional and by the zero set of a nonlinear operator. Via the method of $L^p$ approximations as $p\to \infty$, we illustrate the existence of constrained minimisers in $L^p$ for all large $p< \infty$, which in turn converge to a desired $L^\infty$ minimiser as $p\to \infty$. We further show that the special $L^\infty$ minimiser we construct solves a divergence PDE system which involves certain auxiliary measures as coefficients. This can be seen as a divergence form counterpart of the Aronsson-Euler PDE system which is associated with the $L^\infty$ constrained minimisation problem. This talk is based on joint work with Nikos Katzourakis. Friday 25 February 16:00 – 17:00 Slingo Theatre Alexander Pushnitski (King's College London, England) The spectra of some number-theoretic matrices I will discuss the spectral theory of a family of infinite number-theoretic matrices, whose (n,m)'th entry involves the least common multple of n and m, denoted LCM(n,m). The simplest example of such matrix is {1/LCM(n,m)}, where n,m range over natural numbers. It turns out that an explicit formula for the asymptotics of eigenvalues of this matrix can be given. This is recent joint work with Titus Hilberdink. Monday 21 February 16:00 – 17:00 M212 Håkan Hedenmalm (Leverhulme Visiting Professor at Reading) Soft Riemann-Hilbert problems Friday 21 January 16:00 Zoom link Johannes Sjöstrand. (University of Burgundy, France) Improving semigroup bounds This talk is based on joint works with Bernard Helffer. Let $[0,\infty[ \ni t \to S(t)$ be a semigroup of bounded operators on a complex Hilbert space. We discuss bounds on $\|S(t)\|$ that can be obtained from bounds on the re- solvent of the generator and some known a priori bound on $\|S(t)\|$ for $t$ in a given interval $[0,a^*[$. Via variational arguments, the results are linked to second order ODE’s and Riccati equations.

### Autumn Term 2021

 Date and location Speaker and topic Friday 17 December Michael Hitrik (UCLA, California, USA) Positivity, complex FIOs, and Toeplitz operators Wednesday, December 15 16:00 Per Enflo Holiday Lecture and Concert

### Spring Term 2021

 Date and Location Speaker and topic Friday 22 January 2021 12noon (via video link) Eirik Skrettingland (PhD at NTNU, Norway) Introductory talk on Wieners theorems and quantum harmonic analysis Friday 5 February 2021 4.00pm (via video link) Zoom ID: 610 1486 7631 Christian Seifert (Hamburg University of Technology, Germany) Observability and Null-Controllability in Banach spaces Friday, March 5, 2021 12:00 p.m. (via video link) Istvan Prause (University of Eastern Finland)  Probabilistic limit shapes and harmonic functions

### Summer Break

 Date and location Speaker and Topic August 27, 2021  12 p.m. - 2:00 p.m (via video link) Håkan Hedenmalm (Leverhulme Visiting Professor, University of Reading) Introduction to soft Riemann-Hilbert problems

### Autumn Term 2020

 Date and location Speaker and Topic Wednesday 18 November 4pm (via video link) Zoom ID: 653 8331 7247 Bill Ross (University of Richmond, Virginia) Interpolating with outer functions Friday 18 December 2020 4pm (via video link) Eugene Shargorodsky (King's College London) On the Amick-Fraenkel conjecture

### Summer Term 2020

 Date and location Speaker and Topic Friday 24 April 4pm (via video link) Euan Spence (University of Bath) For most frequencies, strong trapping has a weak effect in frequency-domain scattering Friday 1 May 4pm (via video link) Dijana Iliševic (University of Zagreb, Croatia) On Hermitian projections and isometries with finite spectrum Wednesday 13 May 4pm (via video link) Bojan Kuzma (University of Primorska, Slovenia) Additive spectrum preservers on unbounded operators Friday 22 May 4pm (via video link) Robert Fulsche (Leibniz University Hannover, Germany) Toeplitz algebras on Fock spaces Friday 29 May 4pm (via video link: Chi-Kwong Li (College of William and Mary, Virginia, USA) Quantum states and Quantum channels Friday 5 June 12pm (via video link) Lajos Molnár (University of Szeged, Hungary) Means and their preservers Friday 12 June 4pm (via video link) Antonio Peralta (University of Granada, Spain) Tingley's problem for subsets strictly smaller than the unit sphere

### Spring Term 2020

 Date and Location Speaker and topic Wednesday 5 February 16:00 - 17:00 M314 Tomos Parry (University of Göttingen) Additive patterns in number theoretical sequences Wednesday 26 February 16:00 - 17:00 M108 Sam Evington (University of Oxford) Nuclear Dimension of Simple C*-Algebras and Extensions Friday 6 March 12:00 -13:00 M104 Abraham Ng (University of Oxford) Quantified Asymptotics of Operator Semigroups  Abstract Wednesday 11 March 16:00 - 17:00 M100 Nick Alikakos (University of Athens)  -  CANCELLED Lower bounds and structure of minimizers  Abstract Friday 13 March 16:00 - 17:00 M314 Tobias Hartung (King's College London)  ζ-regularized vacuum expectation values Abstract Wednesday 18 March 16:00 - 17:00 M100  CANCELLED Luciano Abadías (University of Zaragoza) Friday 3 April 16:00 (via Video Link) Alex Schuster (San Francisco State University) Toeplitz Operators on Hardy and Bergman spaces

### Autumn 2019

 Date and location Speaker and topic Thursday 10 October 12:00 -13:00 M212 Ole Fredrik Brevig (Norwegian University of Science and Technology) Norms and eigenvalues for a family of Hilbert-type matrices Friday 18 October 12:00 -13:00 Edith Morley 125 Marta de León Contreras (University of Reading) Fractional Powers of operators via the semigroup language and applications Friday 25 October 12:00 -13:00 Palmer G01 Josh Isralowitz (State University of New York) Commutators of Calderon Zygmund operators (CZOs) in the two weighted setting Wednesday 20 November 16:30 M113 Stuart White (University of Oxford) Amenable operator algebras Wednesday 27 November 14:00 M113 Gordon Blower (University of Lancaster) Invariant measures for some periodic nonlinear PDE Friday 29 November 12:00 -13:00 M108 Takashi Sakajo (Kyoto University) Vortex dynamics on the surface of a torus

### Summer Term 2019

 Date and location Speaker and topic Friday 24 May 12:00 - 13:00 M108 Jerry Goldin (Rutgers) Local symmetry groups and quantum configurations Friday 14 June 12:00 - 13:00 M104 Maria Joao Oliviera (Universidade Aberta / CMAFCIO, University of Lisbon) The beauty of a lifting (of polynomials) Thursday 4 July 16:00 - 17:00 M304 Raffael Hagger (Reading) Analysis at infinity: integral equations, limit operators and beyond

### Spring Term 2019

 Date and location Speaker and topic Wednesday 20 February 16:00 M104 Joscha Diehl (Max-Planck Institute) Singular SPDEs on Riemannian surfaces Friday 8 March 16:00 JJT Ditchburn LT Thomas Bothner (King's College London) The Ising model from 1920 to 2019 Monday 11 March 13:00 M314 Eero Saksman (University of Helsinki) On multiplicative chaos measures as statistical limits Friday 29 March 13:00 M104 Zsigmond Tarcsay (Eötvös Loránd University, Budapest) Extensions of symmetric operators and a generalized strong Parrott theorem

### Autumn Term 2018

 Date and location Speaker and topic Tuesday 4 September Nick Jones (University of Bristol) Asymptotic correlations in topological quantum chains Friday 5 October 16:00 M304 Asma Hassannezhad (University of Bristol) On the relation between Steklov and Laplacian eigenvalues of Riemannian manifolds with boundary Friday 30 November 12:00 M212 Bence Horvath (Lancaster University) The structure of homomorphisms of algebras of operators on Banach spaces Wednesday 12 December Christian Litterer (University of York) TBA (CANCELLED) Tuesday 18 December 14:30 M212 Lyonell Boulton (Heriot-Watt University, Edinburgh) Deformed Trigonometric Functions and Applications

### Summer Term 2018

 Date and location Speaker and topic Thursday 26 April 12-1 pm M100 António Caetano (University of Aveiro) Besov-Morrey and Triebel-Lizorkin-Morrey spaces with variable exponents Tuesday 5 June 12:00 - 13:00 M104 Umberto Mosco (Worcester Polytechnic Institute) On the construction of fractal attractors by synchronized impulsive odes

### Spring Term 2018

 Date and location Speaker and topic Friday 16 March 12:00 - 13:00 M100 Raffael Hagger (University of Hannover) Limit operator theory with applications to Toeplitz Operators

### Autumn Term 2017

 Date and location Speaker and topic Monday 2 October 12:00 - 13:00 Chancellor's Building 100 Elizabeth Strouse (Université de Bordeaux, France) A Szegö theorem for truncated Toeplitz operators Wednesday 8 November 14:30 - 15:30 M113 Jasson Vindas (University of Ghent) Some recent developments on complex Tauberian theorems for Laplace transforms Wednesday 8 November 16:00 - 17:00 M113 Trevor Wooley (University of Bristol) Smooth values of polynomials Friday 10 November 16:00 - 17:00 M212 Gregory Debruyne (University of Ghent) Remainers in the Ingham-Karamata Tauberian theorem Wednesday 6 December 16:00 - 17:00 M113 Kristian Seip (Norwegian University of Science and Technology) On the growth of the Riemann zeta function and its argument Friday 8 December 12:00 - 13:00 M113 Jing Zhao (Trondheim) Contractive inequalities for Hardy spaces Friday 8 December 16:00 - 17:00 M212 Frank Oertel (London) A statistical interpretation of Grothendieck's inequality with a view towards a computation of the Grothendieck constant

### Spring Term 2017

 Date and location Speaker and topic Monday 20 February 16:00 - 17:00 M108 Alfonso Montes-Rodriguez (Universidad de Sevilla) A Perron-Frobenius operator that intertwines the Hilbert Transform: Postivity and Klein-Gordon Equation Wednesday 22 February 16:00 - 17:00 M314 Håkan Hedenmalm (Royal Institute of Technology Stockholm) Bloch functions, asymptotic variance, and geometric zero packing Friday 3 March 16:00 - 17:00 M314 Les Bunce (Reading) The universal ternary ring of an infinite dimensional Hilbert space Wednesday 8 March 16:00 - 17:00 M100 Tamás Titkos (Hungarian Academy of Sciences) Absolute continuity and Galois closedness Friday 17 March 16:00 - 17:00 RH Lecture Theatre, JJT Alfredo Deaño (University of Kent) Special function solutions of the Painlevé IV equation: asymptotics and applications Friday 24 March 16:00 - 17:00 RH Lecture Theatre, JJT Lassi Paunonen (Tampere University of Technology, Finland) Nonuniform stability of coupled differential equations

### Autumn Term 2016

 Date and location Speaker and topic Friday 7 October 12:00 - 13:00 Room JJT 141 Alexey Korepanov (Warwick University) Young towers and uniform statistical properties Friday 14 October 12:00 - 13:00 Room JJT 141 George Chkadua (University of Reading) Asymptotic analysis of fundamental solutions of hypoelliptic equations Friday 28 October Room JJT 141 12:00 - 13:00 György Gehér (University of Reading) Is it possible to determine a point lying in a simplex if we know the distances from the vertices? Friday 11 November 12:00 - 13:00 Room JJT 141 Antti Perälä (University of Eastern Finland) Duality of weighted Bergman spaces with small exponents Friday 18 November 12:00 - 13:00 Room JJT 141 Nick Jones (University of Bristol) Positive definiteness in Random Matrix Theory Friday 25 November 12:00 - 13:00 Room JJT 141 Marco Marletta (Cardiff University) The essential numerical range for unbounded linear operators Tuesday 13 December 12:00 - 13:00 Room tbc Maria Infusino (Universität Konstanz) Quasi-analyticity and determinacy of the moment problem

### Summer Term 2016

 Date and location Speaker and topic 22 April 12:00 - 13:00 Room M212 Paul Smith (Macquarie University) The diffractive effect of rounding the corners of soft, hard and impedance-loaded structures 06 May 12:00 - 13:00 M113 Nilima Nigam (Simon Fraser University, Vancouver) Numerical approximation of the Laplace eigenvalues with mixed boundary data 13 May 13:00 - 14:00 M100 Weijun Xu (Warwick) Large scale behaviour of phase coexistence models 13 May 16:00 - 17:00 M100 Oscar Bandtlow (Queen Mary) Upper and lower bounds for determinants of operators 20 May 12:00 - 13:00 M212 Jari Taskinen (Helsinki) Taylor coefficients and weighted Banach spaces of entire functions 10 June 13:00 - 14:00 M314 Ana F. Loureiro (Kent) Semiclassical polynomials and the alternative discrete Painlevé-I equation 17 June 12:00 - 13:00 M314 Clifford Gilmore (Helsinki) Linear dynamics and derivations 11 July 16:00 - 17:00 JJT 141 Alex Schuster (San Francisco State) Toeplitz operators on spaces of analytic functions 3 August 12:00 - 13:00 M100 Christophe Charlier (UC Louvain) Thinning and conditioning of the Circular Unitary Ensemble

### Spring Term 2016

 Date and location Speaker and topic 13 January 16:00 - 17:00 M212 Alex Schuster (San Francisco State) Toeplitz and Hankel Operators on Weighted Fock Spaces 5 February 16:00 - 17:00 M212 Cho-Ho Chu (Queen Mary) Dynamics of maps 12 February 12:00 - 13:00 M215 Asma Hassannezhad (Bonn) Prescription of eigenvalues in the conformal class of a metric 26 February 12:00 - 13:00 M304 Max Jensen (Sussex) Wide-stencil Methods for Monge-Ampère Equations 11 March 12:00 - 13:00 PALMER G05 Xi Geng (Oxford) The Exponential Transform of a Path: Uniqueness and Reconstruction 18 March 12:00 - 13:00 M212 Simon Chandler-Wilde (Reading) Spectra and Pseudospectra of Non-Normal Random Tri-Diagonal Matrices and Operators

### Autumn Term 2015

 Date and location Speaker and topic 2 October 12:00 - 13:00 M212 Simon Baker (Reading) Expansions in noninteger bases 9 October 12:00 - 13:00 M212 Antti Perälä (Helsinki) On conjectures regarding the Bergman projection 16 October 12:00 - 13:00 M108 Jonathan Ben-Artzi (Imperial College London) Can we compute everything? 23 October 12:00 - 13:00 M108 Giacomo Canevari (Oxford) Defects in the Landau-de Gennes model for liquid crystals 30 October 12:00 - 13:00 M212 Horatio Boedihardjo (Reading) Rough paths in stochastic analysis and beyond 20 November 12:00 - 13:00 M212 Sabine Boegli (Cardiff) The essential numerical range for unbounded linear operators 27 November 12:00 - 13:00 M212 Maria Infusino (Konstanz, Germany) Moment problem for symmetric algebras of locally convex spaces

### Autumn Term 2014

 Date and location Speaker and topic 19 September 12:00 - 13:00 Room M212 Giovanni Leoni (Carnegie Mellon, USA) Dynamics for systems of screw dislocations 26 September 12:00 - 13:00 Room M212 Antoine Choffrut (Edinburgh) On the global structure of the set of steady-states to the 2D incompressible Euler equations 24 October 12:00 - 13:00 Room M113 Tamara Grava (Bristol and SISSA, Italy) Hamiltonian PDEs and dispersive shock waves 31 October 16:00 - 17:00 Room M212 Leonid Parnovsky (UCL) Multidimensional periodic and almost-periodic problems 04 November 11-5 pm Room M212 Joanna Hutchinson (Bristol) Critical phenomena and random matrix theory 07 November 16:00 - 17:00 Room M314 Antti Perälä (Helsinki) Asymptotic variance of the Beurling transform 14 November 12:00 - 13:00 Room M113 Filippo Cagnetti (Sussex) The rigidity problem for symmetrization inequalities 21 November 12:00 - 13:00 Room M113 Mariana Vega Smit (Duisburg-Essen) New developments in the lower dimensional obstacle problem 28 November 12:00 - 13:00 Room M113 Alexander Pushnitski (Kings College London) An inverse problem for positive Hankel operators

### Spring Term 2014

 Date and location Speaker and topic 17 January 16:00 - 17:00 Room M212 Stefanos Aretakis (Princeton, USA) Evolution of linear waves on black holes 20 January 12:00 -13:00 Room M100 Filippo Santambrogio (Paris, France) Continuous traffic congestion: models, regularity and numerics 07 February 16:00 - 17:00 Room M212 Charles Batty (Oxford) Rates of decay in Tauberian theorems 17 February 13:00 - 14:00 Room M212 Raphael Lachièze-Rey Realisability problems for geometric random structures 07 March 12:00 - 13:00 Room M212 Manolis Georgoulis (Leicester) On multiscale discontinuous Galerkin methods for elliptic problems 14 March 16:00 - 17:00 Room M212 Antoine Choffrut (Edinburgh) Weak solutions to the stationary Euler equations 21 March 16:00 - 17:00 Room M212 Michael Levitin (Reading) Real and complex spectra of self-adjoint linear pencils

### Autumn Term 2013

 Date and location Speaker and topic 11 October No seminar in Reading. You may however be interested in The Paris-London Analysis Seminar taking place at UCL today 18 October 16:00 -17:00 Room M212 David Krejcirirk (Prague) The Brownian traveller on manifolds 25 October 16:00 - 17:00 Room M212 Jonathan Partington (Leeds) Laplace transforms and applications of embedding theorems 01 November 12:00 - 13:00 M100 Nikos Katzourakis (Reading) Calculus of Variations in L∞ for the non-expert 08 November 12:00 - 13:00 Room M100 Alex Hening (Oxford) Invasion, co-existence and extinction in spatio-temporally heterogeneous environments 15 November 12:00 - 13:00 Room M100 Konstantinos Koumatos (Oxford) Characterization of gradient Young measures under determinant constraints 22 November 12:00 - 13:00 Room M100 Jim Wright (Edinburgh) A calculus for oscillatory integrals? 29 November 12:00 - 13:00 Room M100 Nikos Katzourakis (Reading) Unravelling Viscosity Solutions: a gentle introduction for the non - expert 29 November 16:00 - 17:00 Room M212: Roger Moser (Bath) Zig-zag domain walls in ferromagnetic materials 06 December Alex Strohmaier (Loughborough) Ray Splitting Billiards and Quantum Ergodicity 13 December 12:00 - 13:00 Room M100 Peter de Boeck (Reading) Local Bifurcation Theory and the Steady Water Wave Problem

### Spring Term 2013

 Date and location Speaker and topic 11 January 16:00 - 17:00 Ilya Spitkovsky (College of William & Mary, Williamsburg) The current state of the almost periodic factorization 18 January 12:00 - 13:00 Laura Caravenna (Oxford) Continuous solutions to a balance law 25 January No seminar 31 January 12:00 - 13:00 M212 Cecilia Busuioc (Royal Holloway) Congruences of modular forms and cyclotomic fields 01 February 12:00 - 13:00 Mike Baines (Reading) Discretizing the Porous Medium Equation based on its gradient flow structure 08 February 16:00 - 17:00 Neal Bez (Birmingham) Multilinear Radon-like transforms 15 February 16:00 - 17:00 Adam Sawicki (Bristol) N-particle quantum statistics on graphs 22 February 16:00 - 17:00 Geoffrey Burton (Bath) Steady periodic surface waves on water in the presence of vorticity 08 March 16:00 -17:00 Ritva Hurri-Syrjanen (Helsinki) On fractional Hardy-type inequalities 15 March Euan Spence (Bath) Some multiplier methods for PDEs

### Autumn Term 2012

 Date and location Speaker and topic 12 October 12:00 -13:00 Lillian Pierce (Oxford) Carleson operators of Radon type with polynomial phase 19 October 12.30 - 17:00 Room M113 Analysis Day 26 October 12:00 -13:00 Tobias Kuna (Reading) Spectral Gap for Glauber type dynamics in infinite particle systems 02 November 12:00 -13:00 Peter Pickl (Munich) Mean Field Limits in Quantum systems 09 November 12:00 -13:00 Izabela Petrykiewicz (Grenoble) Differentiability of Fourier Series of the form $F_k(\tau)=\sum_{n=1}^{\infty} \frac{\sigma_{k-1}(n)}{n^{k+1}}e^{2\pi i n \tau}$ for $k$ even 16 November 12:00 -13:00 Antti Perala (Helsinki) The index formula of Douglas for Toeplitz operators on Bergman spaces 23 November 12:00 - 13:00 Barbara Prinari (Colorado) Solitons and integrable systems 23 November 16:00 -17:00 Ram Band (Bristol) Spectral Geometry on Graphs 30 November 12:00 - 13:00 Steve Langdon (Reading) Numerical-asymptotic boundary integral methods in high frequency acoustic scattering 30 November 16:00 - 17:00 Antonio Peralta (Granada) On the facial structure of the unit ball of a JB*-triple and its dual space 07 December 16:00 -17:00 Zhivko Stoyanov (Reading) Communicability in the brain 14 December 16:00 - 17:00 Room M113 John Toland (Cambridge) Hydroelastic waves

### Summer Term 2012

 Date and location Speaker and topic 02 May 12 - 1pm Room M314 Beatrice Pelloni (Reading) The semigeostrophic equations: a survey of old and new results

### Spring Term 2012

 Date and location Speaker and topic 06 February Oscar Bandtlow (Queen Mary) Quantitative perturbation theory for compact operators on a Hilbert space 17 February Raphael Lachieze-Rey (Paris) Realizability problem with regularity condition 20 February Paulo Almeida (Aveiro, Portugal) A generalization of Euclid-Euler theorem on perfect numbers 27 February David Smith (Reading) Well-posedness of linear initial-boundary value problems 05 March Faez AL Maamori (Reading) Beurling Prime Systems 12 March Andrea Moiola (Reading) Trefftz-Discontinuous Galerkin Methods for Time-Harmonic Wave Problems 19 March Tatiana Kim (Bath) Numerical approximation of highly oscillatory integrals

### Autumn Term 2011

 Date and location Speaker and topic 21 October Claudia Garetto (Imperial College) Well-posedness of hyperbolic Cauchy problems with singularities and/or multiplicities 28 October Daniel Elton (Lancaster) On the Spectrum of Pauli operators 04 November Dave Hewett (Reading) Boundary integral equations in high frequency scattering problems 11 November John Erik Andersson (Warwick) Regularity for the Signorini Problem 18 November No seminar 25 November Anthony Ashton (Cambridge) Rigorous Foundations of the Fokas Transform Method 02 December No seminar 09 December Maria Infusino (Reading) Uniform distribution of sequences of points and of partitions