var sms = '<div id="sms_bulletin">  <div id="sms_header">  <div class="do_not_print" id="arrow_left"><a href="?next=-1"><img src="//www2.math.ethz.ch/smsjs/images/arrow_left.png"/></a></div><div class="do_not_print" id="arrow_right"><a href="?next=1"><img src="//www2.math.ethz.ch/smsjs/images/arrow_right.png"/></a></div>    <div class="sms_title">      <span style="float: left;">SMS</span>      <span>SWISS MATHEMATICAL SOCIETY</span>      <span style="float: right;">SMG</span>    </div>    <div class="sms_info">      <span style="float: left; width: 250px;">Bulletin no. 3</span>      <span style="float: right; text-align:right; width: 250px;">29.9 - 3.10.2025</span>      <span style="text-align: center; display: block; width: 250px; margin: auto; position: relative;">Autumn Semester 2025</span>    </div>  </div>  <div></div>  <div id="sms_content">    <div class="day">      <div class="day_title">        Monday, September 29      </div>      <div class="day_content">        <div class="day_content_item normal"><div class="event_location uni_la"><a class="external" href="https://www.epfl.ch">EPF Lausanne</a></div><div class="event_type"><a class="external" href="https://theory.epfl.ch/seminar/">Theory and Combinatorics Seminar</a></div><br /><div class="event_speaker"> Rares  Buhai</div><div class="event_title">Finding Colorings in One-Sided Expanders <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Finding a 3-coloring in a 3-colorable graph is NP-hard. Given this worst-case hardness, the problem has been studied extensively in average-case and pseudo-random settings. Recently, Bafna, Hsieh, and Kothari [STOC\'25] initiated the study of 3-colorable one-sided expander graphs, for which they gave an algorithm that finds an independent set of size 0.01n -- far from a 3-coloring. In this talk, I will present recent work [FOCS\'25] in which we give an algorithm that finds a 3-coloring on all but o(1)n of the vertices of a 3-colorable one-sided expander graph with balanced color class sizes. On the other hand, if the graph has imbalanced color class sizes, our algorithm finds an independent set of size (1/2-o(1))n, and we give a matching hardness result. We also extend our results to k-colorable one-sided expanders with k > 3. Joint work with Yiding Hua, David Steurer, and Andor Vári-Kakas.</div><div class="event_time">11:00 &bull; EPF Lausanne, INJ114</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_zh"><a class="external" href="https://ethz.ch">ETH Z&uuml;rich</a></div><div class="event_type"><a class="external" href="https://math.ethz.ch/fim/activities/nachdiplom-lectures">Nachdiplomvorlesung</a></div><br /><div class="event_speaker"> Eugenia Malinnikova (Stanford University)</div><div class="event_title">Carleman estimates, unique continuation, and Landis conjecture</div><div class="event_time">13:15 &bull; ETH Zentrum, R&auml;mistrasse 101, Z&uuml;rich, Building HG, Room G 43</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_zh"><a class="external" href="https://uzh.ch">Universit&auml;t Z&uuml;rich</a></div><div class="event_type"><a class="external" href="https://math.ethz.ch/s/talks-in-mathematical-physics">Talks in Mathematical Physics</a></div><br /><div class="event_speaker"> Ezra Getzler (Northwestern University)</div><div class="event_title">Cyclic L-infinity algebras and shifted symplectic forms  <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />A cyclic L-infinity algebra is a shifted symplectic formal derived stack. Using a new geometric approach to homological perturbation theory, we construct a shifted symplectic form on the associated derived stack. (This is a derived analogue of the correspondence between Lie algehroids and Lie groupoids.) </div><div class="event_time">13:30 &bull; UZH Irchel, Winterthurerstrasse 190, Z&uuml;rich, Building Y27, Room H 25</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_ge"><a class="external" href="https://unige.ch">Université de Genève</a></div><div class="event_type"><a class="external" href="https://www.unige.ch/math/mpseminar/seminar.html">Séminaire de Mathématique Physique </a></div><br /><div class="event_speaker"> Nikita Gladkov (UNIGE)</div><div class="event_title">Exploration in Bernoulli percolation <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br /> Consider Bernoulli percolation on a graph, where edges are kept open independently with some probability. By revealing edges one at a time, one can analyze the structure of connected clusters and establish correlation inequalities for connectivity events. I will present several of these inequalities and outline the exploration-based arguments behind them.</div><div class="event_time">14:15 &bull; Université de Genève, Conseil Général 7-9, Room 1-15</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_la"><a class="external" href="https://www.epfl.ch">EPF Lausanne</a></div><div class="event_type"><a class="external" href="https://memento.epfl.ch/event/probability-and-stochastic-analysis-seminar/">Probability (and Stochastic Analysis) Seminar </a></div><br /><div class="event_speaker"> Zhen-Qing Chen (University of Seattle)</div><div class="event_title">Boundary trace of symmetric reflected diffusions <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Starting  with a transient irreducible diffusion process $X^0$ on a locally compact separable metric space $(D, d)$ (for example, absorbing Brownian motion in a snowflake domain), one can construct a canonical symmetric reflected diffusion process $\\bar X$ on a completion $D^*$ of $(D, d)$  through the theory of  reflected Dirichlet spaces. The boundary trace process $\\check X$ of $X$ on the boundary $\\partial D:=D^*\\setminus D$ is the reflected diffusion process $\\bar X$ time-changed by a smooth measure $\\nu$ having full quasi-support on $\\partial D$, which is unique up to a time change. The Dirichlet form of the trace process $\\check X$ is called the trace Dirichlet form. In this talk, I will address the following two fundamental questions:1) How to characterize the boundary trace Dirichlet space in a concrete way?2) How does the boundary trace process behave? Based on a joint work with Shiping Cao.</div><div class="event_time">15:00 &bull; EPF Lausanne, Bernoulli Center</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_zh"><a class="external" href="https://ethz.ch">ETH Z&uuml;rich</a></div><div class="event_type"><a class="external" href="https://math.ethz.ch/s/symplectic-geometry-seminar">Symplectic Geometry Seminar</a></div><br /><div class="event_speaker"> Kyler Siegel (University of Southern California)</div><div class="event_title">Symplectic ellipsoid embeddings, singular plane curves, and scattering diagrams <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />A fundamental problem in quantitative symplectic geometry is to understand in which ways a Hamtilonian flow can "squeeze" phase space. The special case of ellipsoids has been a great source of motivation for the last several decades, in many ways mirroring various important developments in the field (e.g. Gromov-Witten theory, Floer homology, symplectic field theory, embedded contact homology, and more). In this talk, I will survey some new developments in the study of high dimensional symplectic embeddings, and in particular the recent resolution of the so-called stabilized ellipsoid conjecture. Our framework sets up a bridge between quantitative symplectic geometry and the classical study of singular algebraic curves, studying the latter using tools from log Calabi-Yau mirror symmetry. I will not assume familiarity with any of this background.</div><div class="event_time">15:15 &bull; ETH Zentrum, R&auml;mistrasse 101, Z&uuml;rich, Building HG, Room G 43</div>        </div>        <div class="day_content_item important"><div class="event_location uni_zh"><a class="external" href="https://ethz.ch">ETH Z&uuml;rich</a></div><div class="event_type"><a class="external" href="https://math.ethz.ch/s/symplectic-geometry-seminar">Symplectic Geometry Seminar</a></div><br /><div class="event_speaker"> Leonid Polterovich (Tel-Aviv University)</div><div class="event_title">Contact topology meets thermodynamics <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />I discuss the appearance of certain notions and results from contact topology in both equilibrium and non-equilibrium thermodynamics. These include non-smooth Legendrian submanifolds, Reeb chords, and the partial order on the space of Legendrians. Based on joint work with Michael Entov and Lenya Ryzhik.</div><div class="event_time">16:30 &bull; ETH Zentrum, R&auml;mistrasse 101, Z&uuml;rich, Building HG, Room G 43</div>        </div>      </div>    </div>    <div class="day">      <div class="day_title">        Tuesday, September 30      </div>      <div class="day_content">        <div class="day_content_item normal"><div class="event_location uni_ge"><a class="external" href="https://unige.ch">Université de Genève</a></div><div class="event_type"><a class="external" href="https://www.unige.ch/math/annonces/groupes-geometrie">Groupes et Géométrie </a></div><br /><div class="event_speaker"> Timothée Bénard (Université Sorbonne Paris Nord)</div><div class="event_title">Random walks on nilpotent Lie groups <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />I will present (local) central limit theorems for random walks on nilpotent Lie groups. Most works on the topic assumed the step distribution of the walk to be centered in the abelianization of the group. The main novelty is to authorize non-centered step distributions. In this case, new phenomena emerge: the large-scale geometry of the walk depends on the increment average, and the limit measure in the central limit theorem may not have full support in the ambient group. Joint work with Emmanuel Breuillard.</div><div class="event_time">10:30 &bull; Université de Genève, Conseil Général 7-9, Room 1-05</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_zh"><a class="external" href="https://ethz.ch">ETH Z&uuml;rich</a></div><div class="event_type"><a class="external" href="https://math.ethz.ch/fim/activities/nachdiplom-lectures">Nachdiplomvorlesung</a></div><br /><div class="event_speaker"> Eva Miranda (Universitat Politècnica de Catalunya)</div><div class="event_title">Singular Symplectic Manifolds</div><div class="event_time">13:15 &bull; ETH Zentrum, R&auml;mistrasse 101, Z&uuml;rich, Building HG, Room G 43</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_dis"><a class="external" href="https://unidistance.ch">UniDistance Suisse</a></div><div class="event_type"><a class="external_nolink">Number Theory Seminar</a></div><br /><div class="event_speaker"> Alberto Angurel Andrés (University of Nottingham)</div><div class="event_title">Kolyvagin systems and Fitting ideals of Selmer groups of rank 0 <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />he Euler and Kolyvagin system machinery cannot be applied directly to study certain Selmer groups carrying important arithmetic information. This is the case of the Selmer groups defined from Selmer structures of \'core rank\' 0, like the classical Selmer group of an elliptic curve. The main obstruction is the lack of non-zero Kolyvagin systems associated these Selmer structures. In this talk, I will describe a method to compute the Fitting ideals of these groups using the Kolyvagin systems existing for an auxiliary Selmer structure obtained after relaxing a local condition at certain prime.</div><div class="event_time">15:00 &bull; <a class="external" href="fernuni.zoom.us/my/davidloeffler">UniDistance Suisse</a></div>        </div>        <div class="day_content_item normal"><div class="event_location uni_ge"><a class="external" href="https://unige.ch">Université de Genève</a></div><div class="event_type"><a class="external" href="https://www.unige.ch/math/seminaires/lie-sem/">Lie groups and moduli spaces </a></div><br /><div class="event_speaker"> Anton Alekseev (UniGE)</div><div class="event_title">Tetrahedral Horn problem <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />The tetrahedral Horn problem is asking to determine the range of eigenvalues of Hermitian n by n matrices C=A+B, E=A+B+D, and F=B+D if the eigenvalues of A, B and D are fixed. Geometrically, this corresponds to constructing tetrahedra in the space of Hermitian matrices H_n, and for n=2 the problem reduces to constructing Euclidean tetrahedra with given side lengths in R^3. We will present a necessary and sufficient condition for the tetrahedral Horn problem. This condition consists of several easy trace equalities, and of an infinite number of inequalities on Schur polynomials of (A, B, C, D, E, F). We show that by increasing the polynomial degree one can find finite systems of inequalities which approximate the solution with an arbitrarily small error. The tetrahedral Horn problem is closely related to Wigner 6j-symbols for the unitary group U(n). We will show estimates on 6j symbols which establish a new instance of correspondence between geometry of tetrahedra and representation theory of U(n). These estimates shed light on the nature of inequalities in our necessary and sufficient condition. The talk is based on a joint work in progress with M. Christandl and T.C. Fraser. </div><div class="event_time">15:00 &bull; Université de Genève, Conseil Général 7-9, Room 1-07</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_zh"><a class="external" href="https://ethz.ch">ETH Z&uuml;rich</a></div><div class="event_type"><a class="external" href="https://math.ethz.ch/s/analysis-seminar">Analysis Seminar</a></div><br /><div class="event_speaker">Prof. Dr. Xavier Cabré (Universitat Politècnica de Catalunya)</div><div class="event_title">Boundary reaction problems: from solutions in convex domains to the half-Laplacian <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />We will start reviewing the Casten-Holland and Matano theorem for interior reactions. It establishes the nonexistence of nonconstant stable solutions in convex domains. We will then present a forthcoming result stating that the analogue result for boundary reactions is not true. This will require the development of a new Ginzburg-Landau theory for real valued functions, as well as the study of the half-Laplacian on the real line ---for which some open problems will be presented.</div><div class="event_time">15:15 &bull; ETH Zentrum, R&auml;mistrasse 101, Z&uuml;rich, Building HG, Room G 43</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_zh"><a class="external" href="https://ethz.ch">ETH Z&uuml;rich</a></div><div class="event_type"><a class="external" href="https://math.ethz.ch/s/zurich-colloquium-in-mathematics">Zurich Colloquium in Mathematics</a></div><br /><div class="event_speaker"> Amnon  Neeman (Università degli Studi di Milano)</div><div class="event_title">Vanishing negative K-theory and bounded t-structures <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />We will begin with a quick reminder of algebraic K-theory, and a few classical, vanishing results for negative K-theory. The talk will then focus on a striking 2019 article by Antieau, Gepner and Heller - it turns out that there are K-theoretic obstructions to the existence of bounded t-structures. The result suggests many questions. A few have already been answered, but many remain open. We will concentrate on the many possible directions for future research.</div><div class="event_time">16:30 &bull; ETH Zentrum, Building KO2, Room F 150</div>        </div>      </div>    </div>    <div class="day">      <div class="day_title">        Wednesday, October 1      </div>      <div class="day_content">        <div class="day_content_item normal"><div class="event_location uni_zh"><a class="external" href="https://uzh.ch">Universit&auml;t Z&uuml;rich</a></div><div class="event_type"><a class="external" href="https://www.math.uzh.ch/mat760">Ergodic theory and dynamical systems seminar</a></div><br /><div class="event_speaker">Prof. Dr. Anja Randecker (Heidelberg University)</div><div class="event_title">Large-genus asymptotics for translation surfaces <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />&lt;p>Translation structures on surfaces can be obtained in many different ways: as suspensions of interval exchange transformations, from holomorphic differentials, as cotangent vectors to Teichm&uuml;ller space, or by unfolding polygonal billiards. We ask how such translation surfaces generically look like for large genus.&lt;/p> &lt;p>In the talk, I will introduce translation surfaces through their connections to dynamical systems and give an overview on the question of large-genus asymptotics. The focus will be on a recent joint result with Howard Masur and Kasra Rafi on the distribution of the number of short saddle connections.&lt;/p></div><div class="event_time">13:30 &bull; UZH Irchel, Winterthurerstrasse 190, Z&uuml;rich, Building Y27, Room H 28</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_zh"><a class="external" href="https://ethz.ch">ETH Z&uuml;rich</a></div><div class="event_type"><a class="external" href="https://math.ethz.ch/s/geometry-seminar">Geometry Seminar</a></div><br /><div class="event_speaker">Dr. Damaris Meier (ETH Z&uuml;rich, Switzerland)</div><div class="event_title">Uniformization of metric surfaces <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />The uniformization problem for metric surfaces asks under which condition a metric space <i>X</i>, homeomorphic to a model surface <i>M</i>, admits a parametrization <i>u: M &rarr; X</i> with good geometric and analytic properties. In this talk, we focus on the case where <i>X</i> has locally finite Hausdorff 2-measure. After revisiting the breakthrough results of Bonk-Kleiner and Rajala, we will demonstrate that no additional assumptions are necessary for the existence of a "good" parametrization. If <i>X</i> is locally geodesic, such parametrizations can be constructed by exploiting existence and regularity properties of energy-minimizing Sobolev mappings.</div><div class="event_time">15:30 &bull; ETH Zentrum, R&auml;mistrasse 101, Z&uuml;rich, Building HG, Room G 43</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_zh"><a class="external" href="https://ethz.ch">ETH Z&uuml;rich</a></div><div class="event_type"><a class="external" href="https://math.ethz.ch/s/seminar-on-stochastic-processes">Seminar on Stochastic Processes</a></div><br /><div class="event_speaker">Prof. Dr. Ivan Kryven (Utrecht University)</div><div class="event_title">A connection between Burgers’ equation, coagulation processes, and branching <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />We establish a direct correspondence between discrete&#8208;time branching processes and a family of nonlinear evolutionary PDEs generalizing the inviscid Burgers equation. Starting from a simple nonlinear PDE, we show its stochastic analogue is a single&#8208;type branching process with Poisson offspring, closely related to the Erdos-Renyi random graph. By relaxing the PDE’s constraints, this framework naturally extends to multitype branching processes that admit an interpretation as higher&#8208;order coagulation with a multiplicative kernel. Our convergence analysis relies on a new large&#8208;deviation result for the size distribution of finite progenies. Beyond providing an interesting link between PDEs and branching, the representation yields explicit bounds—and in some cases exact expressions—for the blow up time in these nonlinear PDEs.</div><div class="event_time">17:15 &bull; ETH Zentrum, R&auml;mistrasse 101, Z&uuml;rich, Building HG, Room G 43</div>        </div>      </div>    </div>    <div class="day">      <div class="day_title">        Thursday, October 2      </div>      <div class="day_content">        <div class="day_content_item normal"><div class="event_location uni_zh"><a class="external" href="https://ethz.ch">ETH Z&uuml;rich</a></div><div class="event_type"><a class="external" href="https://math.ethz.ch/fim/activities/nachdiplom-lectures">Nachdiplomvorlesung</a></div><br /><div class="event_speaker"> Bo\'az Klartag (The Weizmann Institute of Science)</div><div class="event_title">Isoperimetric inequalities in high-dimensional convex sets</div><div class="event_time">10:15 &bull; ETH Zentrum, R&auml;mistrasse 101, Z&uuml;rich, Building HG, Room G 43</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_ge"><a class="external" href="https://unige.ch">Université de Genève</a></div><div class="event_type"><a class="external" href="https://sites.google.com/view/pm-seminar/home">Physical Mathematics Seminar</a></div><br /><div class="event_speaker"> Mohamad  Alameddine  (St.-Etienne)</div><div class="event_title">Isomonodromy systems and the different forms of the x-y duality <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />By deforming a meromorphic connection in an isomonodromic way over the punctured Riemann sphere, one gets Hamiltonians governing a rich variety of integrable systems, the Painlevé equations are a famous example of this construction. Moduli spaces of connections admit various symmetries that preserve the symplectic structure of the deformation equations, one of which is the x-y duality. In this talk, after introducing the necessary ingredients, we shall see how this duality relates the symplectic structures of two different isomonodromy systems as an example. At the end, a conjectural diagram relating this duality to many other dualities shall be presented.</div><div class="event_time">14:00 &bull; Université de Genève, Conseil Général 7-9, Room 1-05</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_la"><a class="external" href="https://www.epfl.ch">EPFL- Lausanne- Mathematics</a></div><div class="event_type"><a class="external" href="https://www.epfl.ch/labs/hessbellwald-lab/seminar/epfl-topology-seminar-fall-2024/">Séminaire de Topologie </a></div><br /><div class="event_speaker"> Aloïs Rosset (Amsterdam)</div><div class="event_title">Quasitoposes in graph rewriting <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Graph rewriting studies algorithms that transform graphs. Fundamental questions include whether algorithms terminate and whether different rewriting paths yield the same result. A challenge lies in the wide variety of graph definitions: multigraphs, hypergraphs, bipartite graphs, coloured graphs, labelled graphs, etc. Category theory provides a unifying framework: algorithms can be formulated abstractly and then instantiated in any suitable category of graphs. Meta-theorem can likewise be expressed in terms of categorical properties. In recent years, (elementary) quasitoposes have attracted attention, as they capture key properties for unifying algorithms, handling relabelling, and ensuring certain meta-theorems.In this talk, I will present two results from my thesis. First, I show that endowing presheaves with fuzzy structures form quasitoposes, a setting that captures relabelling in graphs. Second, I investigate LT-topologies on certain categories of graphs, including simplicial sets, and identify the quasitoposes that arise from them.</div><div class="event_time">14:00 &bull; <a class="external" href="https://plan.epfl.ch/?room==CM%201%20517">EPFL- Lausanne- Mathematics</a></div>        </div>        <div class="day_content_item normal"><div class="event_location uni_zh"><a class="external" href="https://ethz.ch">ETH Z&uuml;rich</a></div><div class="event_type"><a class="external" href="https://stat.ethz.ch/events/research_seminar">Research Seminar in Statistics</a></div><br /><div class="event_speaker"> Yuhao Wang (Tsinghua University)</div><div class="event_title">Residual permutation test for regression coefficient testing <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />We consider the problem of testing whether a single coefficient is equal to zero in linear models when the dimension of covariates p can be up to a constant fraction of sample size n. In this regime, an important topic is to propose tests with finite-sample valid size control without requiring the noise to follow strong distributional assumptions. In this paper, we propose a new method, called the residual permutation test (RPT), which is constructed by projecting the regression residuals onto the space orthogonal to the union of the column spaces of the original and permuted design matrices. RPT can be proved to achieve finite-sample size validity under fixed design with just exchangeable noises, whenever p &lt; n/2. Moreover, RPT is shown to be asymptotically powerful for heavy-tailed noises with bounded (1+t) th order moment when the true coefficient is at least of order n&#8722;t/(1+t) for t&#8712; [0,1]. We further proved that this signal size requirement is essentially rate-optimal in the minimax sense. Numerical studies confirm that RPT performs well in a wide range of simulation settings with normal and heavy-tailed noise distributions.</div><div class="event_time">15:15 &bull; ETH Zentrum, R&auml;mistrasse 101, Z&uuml;rich, Building HG, Room G 43</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_ge"><a class="external" href="https://unige.ch">Université de Genève</a></div><div class="event_type"><a class="external" href="https://www.unige.ch/~palmeran/topsem.html">Séminaire de Topologie et Géométrie </a></div><br /><div class="event_speaker"> Miguel  Orbegozo Rodriguez  (Université de Genève)</div><div class="event_title">Open book techniques for non-fibered links <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Fibered links are those whose complement is a mapping torus. As such, they can be described by an open book (S,h) where S is a minimal genus Seifert surface, and h is a diffeomorphism of S called the monodromy. Some properties of these links can therefore be studied by looking at properties of surface diffeomorphisms. I will review some results that can be proven in this way, and introduce a way to generalize them to all links (together with an incompressible Seifert surface) using product disks, originally introduced by Gabai. This is joint work with Peter Feller and Lukas Lewark.</div><div class="event_time">16:15 &bull; Université de Genève, Conseil Général 7-9, Room 1-15</div>        </div>      </div>    </div>    <div class="day">      <div class="day_title">        Friday, October 3      </div>      <div class="day_content">        <div class="day_content_item important"><div class="event_location uni_zh"><a class="external" href="https://ethz.ch">ETH Z&uuml;rich</a></div><div class="event_type"><a class="external" href="https://math.ethz.ch/s/analysis-seminar">Analysis Seminar</a></div><br /><div class="event_speaker">Prof. Dr. Gang Tian (Peking University)</div><div class="event_title">Special Geometric Analysis Seminar </div><div class="event_time">12:15 &bull; ETH Zentrum, R&auml;mistrasse 101, Z&uuml;rich, Building HG, Room G 43</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_zh"><a class="external" href="https://ethz.ch">ETH Z&uuml;rich</a></div><div class="event_type"><a class="external" href="https://math.ethz.ch/s/number-theory-seminar">Number Theory Seminar</a></div><br /><div class="event_speaker">Prof. Dr. Emmanuel Kowalski (ETH Z&uuml;rich, Switzerland)</div><div class="event_title">Equidistribution and Wasserstein distance <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />(joint work with T. Untrau)The talk will explain how Wasserstein distances provide a natural andflexible way to quantify equidistribution theorems in number theory. Asan illustration, we will present a quantitative version of Deligne\'sEquidistribution Theorem.</div><div class="event_time">14:15 &bull; ETH Zentrum, R&auml;mistrasse 101, Z&uuml;rich, Building HG, Room G 43</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_la"><a class="external" href="https://www.epfl.ch">EPF Lausanne</a></div><div class="event_type"><a class="external" href="https://www.epfl.ch/labs/anmath/seminars/">Seminar of Analysis </a></div><br /><div class="event_speaker"> Xavier Fernandez-Real (EPFL - AMCV)</div><div class="event_title">Stable Free Boundaries in Dimension 3: Bernoulli and Allen--Cahn <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />In this talk, I will present our recent work on the classification of global stable solutions to the Bernoulli problem in $\\mathbb R^3$. In particular, this yields local universal curvature bounds for the free boundary for the local problem.By means of this result, we prove the free boundary Allen--Cahn stability conjecture in dimension 3: global stable solutions to the free boundary analogue of the Allen--Cahn equation are one dimensional in dimension 3. This solves the long-standing De Giorgi conjecture in the free boundary case.</div><div class="event_time">14:15 &bull; EPF Lausanne, MA B1 11</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_zh"><a class="external" href="https://ethz.ch">ETH Z&uuml;rich</a></div><div class="event_type"><a class="external" href="https://math.ethz.ch/s/algebraic-geometry-and-moduli-seminar">Algebraic Geometry and Moduli Seminar</a></div><br /><div class="event_speaker"> Aitor Iribar López (ETH Zürich)</div><div class="event_title">A Theorem of Fritz Carlson</div><div class="event_time">16:00 &bull; ETH Zentrum, R&auml;mistrasse 101, Z&uuml;rich, Building HG, Room G 43</div>        </div>      </div>    </div>  </div>  <div id="sms_footer">    address: Alessandra Naldi Windler, Departement Mathematik, HG G 51.4, ETH Zurich, Raemistrasse 101, CH-8092 Zurich<br />    email: <a href="mailto:bulletin@math.ch">bulletin@math.ch</a> | phone: +41 44 632 3684 | url: <a href="https://math.ch">https://math.ch</a>    <br /><br /><img src="//www2.math.ethz.ch/smsjs/sms_logo.gif" width="150" alt="SMS/SMG Logo" title="SMS/SMG Logo" />  </div></div>';