var sms = '<div id="sms_bulletin">  <div id="sms_header">  <div class="do_not_print" id="arrow_left"><a href="?next=-10"><img src="//www2.math.ethz.ch/smsjs/images/arrow_left.png"/></a></div><div class="do_not_print" id="arrow_right"><a href="?next=-8"><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. 11</span>      <span style="float: right; text-align:right; width: 250px;">28.4 - 2.5.2025</span>      <span style="text-align: center; display: block; width: 250px; margin: auto; position: relative;">Spring Semester 2025</span>    </div>  </div>  <div></div>  <div id="sms_content">    <div class="day">      <div class="day_title">        Monday, April 28      </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/mpseminar/seminar.html">Séminaire de Mathématique Physique </a></div><br /><div class="event_speaker"> Andrew Charles Kenneth Swan (EPFL)</div><div class="event_title">A new hyperbolic sigma model <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Recently, Sabot and Tarr\\`es introduced a new type of vertex reinforced jump process: the $\\star$-VRJP. It is defined on a directed graph $G$, which is equipped with a special involution $\\star: G \\rightarrow G$ that sends each vertex $j$ to a conjugate vertex $j^\\star$, and each edge $\\langle ij \\rangle$ to a reversed conjugate edge $\\langle j^\\star i^\\star \\rangle$. Much like the ordinary VRJP, the $\\star$-VRJP is linearly reinforced according to the local time of the walker, but where the ordinary VRJP prefers to jump to where it has been, the $\\star$-VRJP prefers to jump to the \\emph{conjugate} of where it has been. Also much like the ordinary VRJP, the $\\star$-VRJP possesses a variety of remarkable integral identities through its ``magic formula" and random Sch\\"odinger representation. In the case of the VRJP, through its connection with the  hyperbolic sigma model, the existence of these identities is seen to be a consequence of supersymmetric localisation: this naturally raises the question if there exists a ``$\\star$-sigma model" counterpart to the $\\star$-VRJP to give a similar supersymmetric explanation. In this talk, I will introduce this new $\\star$-hyperbolic sigma model, the $\\mathbb{H}^{2n+1|4m}_\\star$-model, which is, in a sense, a complexification of the ordinary $\\mathbb{H}^{n|2m}$-model, and will present several new isomorphism theorems which connect it to the $\\star$-VRJP. Joint work with Sabot and Tarr\\`es.</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">        Tuesday, April 29      </div>      <div class="day_content">        <div class="day_content_item normal"><div class="event_location uni_ba"><a class="external" href="https://unibas.ch">Universität Basel</a></div><div class="event_type"><a class="external" href="https://dmi.unibas.ch/de/forschung/mathematik/algebraische-geometrie/">Seminar Algebra and Geometry</a></div><br /><div class="event_speaker"> Nikolaos Tsakanikas (EPFL)</div><div class="event_title"><a class="external" href="https://dmi.unibas.ch/de/news-events/detail/seminar-algebra-and-geometry-nikolaos-tsakanikas-epfl/">Singular Enriques varieties</a> <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />I n this talk, which is based on joint work with Denisi, Ortiz and Xie, I will introduce the class of primitive Enriques varieties. I will discuss the basic properties of these objects, showing in particular that the smooth ones are Enriques manifolds, and I will also present some examples of (singular) primitive Enriques varieties. Finally, I will sketch the proof of the following termination statement: if X is an Enriques manifold and B is an R-divisor on X such that the pair (X,B) is log canonical, then any (K_X+B)-MMP terminates.</div><div class="event_time">10:30 &bull; Universität Basel, Seminarraum 00.003, Spiegelgasse 1</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"> Susan Wei (Monash University, Australia)</div><div class="event_title">What\'s Degeneracy Got to Do with It? Understanding Deep Neural Networks through Singular Learning Theory <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Deep neural networks (DNNs) are singular statistical models whose loss landscapes exhibit complex degeneracies - features that defy explanation through classical regular statistical theory. Drawing on tools from singular learning theory, we introduce the Local Learning Coefficient (LLC), a quantity that rigorously quantifies the degree of degeneracy in DNNs. While the LLC is rooted in the singular framework, it recovers familiar notions of model complexity in regular or "minimally singular" regimes. We develop a scalable estimator for the LLC and apply it across a range of architectures, including deep linear networks with up to 100M parameters, ResNet image classifiers, and transformers. Empirical results demonstrate that the LLC sheds light on a range of deep learning phenomena, including in-context learning in transformers and the competition between energy and entropy during training dynamics, as well as how standard training heuristics influence effective model complexity. Ultimately, the LLC provides a practical instantiation of singular learning theory in modern deep learning, offering new perspectives on the interplay between overparameterization, generalization, and parsimony.</div><div class="event_time">13:15 &bull; ETH Zentrum, R&auml;mistrasse 101, Z&uuml;rich, Building HG, Room G 19.2</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"> Gianmarco  Caldini  (University of Trento)</div><div class="event_title">On the smooth approximation of integral cycles <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />The natural question of how much smoother integral currents are with respect to their initial definition goes back to the late 1950s and to the origin of the theory with the seminal article of Federer and Fleming. In this seminar I will explain how closely one can approximate an integral current representing a given homology class by means of a smooth submanifold. This is a joint study with William Browder and Camillo De Lellis, based on some previous preliminary work of the former author together with Frederick Almgren.</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/math/seminaires/lie-sem/">Lie groups and moduli spaces </a></div><br /><div class="event_speaker"> Andreas  Swerdlow  (Manchester)</div><div class="event_title">Maps of Derived Poisson Manifolds and Thick Morphisms <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br /> Derived Poisson manifolds are a homotopy version of usual Poisson manifolds, arising, for example, when generalising the Lie–Poisson construction for Lie algebras to L-infinity algebroids. Instead of a single bracket operation taking two functions, they have a sequence of n-ary brackets for each n > 0, which assemble into an L-infinity algebra structure on smooth functions. Morphisms between derived Poisson manifolds are given by formal nonlinear pullback maps on functions, which define L-infinity morphisms between the L-infinity algebra structures on functions and satisfy a certain Leibniz-type property. We will show that morphisms satisfying the Leibniz property are equivalent to certain formal canonical relations, called microformal or thick morphisms, between the cotangent bundles of the manifolds in question.</div><div class="event_time">15:30 &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://uzh.ch">Universit&auml;t 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"> Endre Süli (University of Oxford)</div><div class="event_title">Hilbert\'s 19th problem and discrete De Giorgi{Nash{Moser theory: analysis and applications <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Models of non-Newtonian fluids play an important role in science and engineering and their mathematical analysis and numerical approximation have been active fields of research over the past decade. This lecture is concerned with the analysis of numerical methods for the approximate solution of a system of nonlinear partial differential equations that arise in models of chemically-reacting viscous incompressible non-Newtonian fluids, such as the synovial fluid found in the cavities of synovial joints. The synovial fluid consists of an ultra-filtrate of blood plasma that contains hyaluronic acid, whose function is to reduce friction during movement. The shear-stress appearing in the model involves a power-law type nonlinearity, where the power-law exponent depends on a spatially varying nonnegative concentration function, expressing the concentration of hyaluronic acid, which, in turn, solves a nonlinear convection-diffusion equation. In order to prove convergence of the sequence of numerical approximations to a solution of this coupled system of nonlinear partial differential equations one has to derive a uniform Hölder norm bound on the sequence of approximations to the concentration in a setting where the diffusion coefficient in the convection-diffusion equation satisfied by the concentration is merely a bounded function with no additional regularity. This necessitates the development of a discrete counterpart of the De Giorgi--Nash--Moser theory, which is then used, in conjunction with various compactness techniques, to prove the convergence of the sequence of numerical approximations to a weak solution of the coupled system of nonlinear partial differential equations under consideration</div><div class="event_time">16:30 &bull; UZH Zentrum, Building KO2, Room F 150</div>        </div>      </div>    </div>    <div class="day">      <div class="day_title">        Wednesday, April 30      </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"> Adam Kanigowski (University of Maryland)</div><div class="event_title">Sparse Equidistribution Problems in Dynamics</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_zh"><a class="external" href="https://ethz.ch">ETH 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">Konstantin Andritsch (ETHZ)</div><div class="event_title">Joined Equidistribution of Arithmetic Objects associated to Planes in Indefinite Quaternary Quadratic Space <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Recent advances in the understanding of higher-rank diagonalizable actions on homogeneous spaces by Einsiedler and Lindenstrauss have opened the door to natural couplings of distributions of objects like periodic geodesics or complex multiplication points on the modular surface, or the distribution of integer points on large spheres. In this talk we will discuss such a natural coupling by considering an indefinite quaternary quadratic vector space (V, Q). To each rational plane in V one can naturally attach three arithmetic objects which are associated to quadratic forms. The first two objects arise from the plane and its orthogonal complements with respect to Q, the third (accidental) object is constructed via the Clifford algebra of (V, Q). These arithmetic objects lead to tuples consisting of three geodesics and a point. We discuss their constructions and simultaneous equidistribution using the joining classification result of Einsiedler and Lindenstrauss under a splitting condition. This is joint work with Menny Aka and Andreas Wieser.</div><div class="event_time">13:30 &bull; ETH Zentrum, R&auml;mistrasse 101, Z&uuml;rich, Building HG, Room G 19.1</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">Prof. Dr. Michel van Garrel (University of Birmingham)</div><div class="event_title">Geometric generating functions of punctured Gromov-Witten invariants and enumerative mirror symmetry <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Intrinsic Mirror Symmetry (Gross, Siebert) associates to a log Calabi-Yau variety (Y,D) a geometric generating function with support the tropicalisation of (Y,D), and with invariants the corresponding punctured Gromov-Witten invariants. This construction defines a ring and a mirror family. The enumerative mirror conjecture then states that various period integrals on the mirror family compute various Gromov-Witten invariants of (Y,D), not necessarily punctured. I will describe some examples, where this is realized, and where one obtains some new relations for Gromov-Witten invariants. Joint work with Siebert and Ruddat.</div><div class="event_time">13:30 &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_ba"><a class="external" href="https://unibas.ch">Universität Basel</a></div><div class="event_type"><a class="external" href="https://dmi.unibas.ch/de/forschung/mathematik/analysis/analysis-seminar">Analysis Seminar</a></div><br /><div class="event_speaker"> Wojciech Ozanski (Florida State University)</div><div class="event_title"><a class="external" href="https://dmi.unibas.ch/de/news-events/detail/seminar-analysis-and-mathematical-physics-wojciech-ozanski-florida-state-university/">Exact boundary controllability of the 2D and 3D incompressible ideal MHD system</a> <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />We are concerned with the ideal magneto-hydrodynamic system of PDEs posed on a domain in $\\mathbb{R}^2$ or $\\mathbb{R}^3$, such that a part $\\Gamma $ of the boundary of the domain is controlled in the sense that $v\\cdot n = k, b\\cdot n =l$ on $\\Gamma$, where $k,l$ are controls, and $v$ and $b$ denote the velocity field and the magnetic field of the system, respectively. The aim of the control is to bring the system from a given initial state $(v_0,b_0)$ into a given final state $(v_1,b_1)$ in finite time. Such a controllability problem was resolved for the 2D and 3D incompressible Euler equation in the 1990\'s by Coron and Glass. The case of the ideal MHD system is much harder due to the lack of the pressure function in the equation for $b$. Very recently, exact boundary controllability of the 2D MHD system was achieved in the case of a flat channel by Kukavica, Novack, Vicol. In the talk we will discuss the main difficulties of the problem and present a recent result (joint with Kukavica), which completely resolves the case of any domain in both 2D and 3D incompressible ideal MHD system.</div><div class="event_time">14:15 &bull; Universität Basel, Spiegelgasse 5, Seminarraum 05.002</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"> Stephan Stadler (MPIM Bonn)</div><div class="event_title">Isoperimetric gaps in CAT(0) spaces <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />A metric space <i>X</i> satisfies a Euclidean isoperimetric inequality for <i>n</i>-spheres, if every <i>n</i>-sphere <i>S &sub; X</i> bounds a ball <i>B &sub; X</i> with vol<sub><i>n</i>+1</sub>(<i>B</i>)&le; <i>C</i> &middot; vol<sub><i>n</i></sub>(<i>S</i>)<sup>(<i>n</i>+1)/<i>n</i></sup>. Every CAT(0) space <i>X</i> satisfies Euclidean isoperimetric inequalities for 1-spheres with the sharp constant <i>C</i>=1/4&#960;. Moreover, if such inequalities hold with a constant strictly smaller than 1/4&#960;, then <i>X</i> has to be Gromov hyperbolic. In particular, a sharp isoperimetric gap appears. In the talk I will focus on the case <i>n</i>=2, namely fillings of 2-spheres by 3-balls. This is based on joint work with Drutu, Lang and Papasoglu.</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_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"> Xiaoyu  Yang  (Kyushu University)</div><div class="event_title">Large deviation principle for slow-fast rough differential equations via controlled rough paths <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />We prove a large deviation principle for the slow-fast rough differential equations under the controlled rough path framework. The driver rough paths are lifted from the mixed fractional Brownian motion with Hurst parameter 1/3&lt;H&lt;1/2. Our approach is based on the continuity of the solution mapping and the variational framework for mixed fractional Brownian motion. By utilizing the variational representation, our problem is transformed into a qualitative property of the controlled system. In particular, the fast rough differential equation coincides with Itô SDE almost surely, which possesses a unique invariant probability measure with frozen slow component. We then demonstrate the weak convergence of the controlled slow component by averaging with respect to the invariant measure of the fast equation and exploiting the continuity of the solution mapping.</div><div class="event_time">16:00 &bull; EPF Lausanne, CM1 517</div>        </div>        <div class="day_content_item cancelled"><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/seminar-on-stochastic-processes">Seminar on Stochastic Processes</a></div><br /><div class="event_speaker"> Daniela Portillo del Valle (Universität Zürich, Switzerland)</div><div class="event_title">CANCELLED: Graduate Workshop Reinforcement</div><div class="event_time">17:15 &bull; UZH Irchel, Winterthurerstrasse 190, Z&uuml;rich, Building Y27, Room  H12</div>        </div>      </div>    </div>    <div class="day">      <div class="day_title">        Thursday, May 1      </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://www.unil.ch/dsa/en/home/menuinst/seminaires--evenements/research-seminars.html">Talks in Actuarial Mathematics </a></div><br /><div class="event_speaker"> Nikolai  Kriukov  (University of Amsterdam)</div><div class="event_title">Limit theorems for Gaussian-fed queueing networks in light and heavy traffic’ <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />In this talk we consider a queueing network operating under a strictly upper-triangular routing matrix with per column at most one non-negative entry. The root node is fed by a Gaussian process with stationary increments. Our aim is to characterize the distribution of the multivariate stationary workload process under a specific scaling of the queue\'s service rates. In the main results we identify, under mild conditions on the standard deviation function of the driving Gaussian process, in both light and heavy traffic, the limiting law of an appropriately scaled version (in both time and space) of the joint stationary workload process. In particular, we develop conditions under which specific queues of the network effectively decouple, i.e., become independent in the limiting regime.</div><div class="event_time">14:00 &bull; EPF Lausanne, Extranef, 126</div>        </div>      </div>    </div>    <div class="day">      <div class="day_title">        Friday, May 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"> Boris Bukh (Carnegie Mellon University)</div><div class="event_title">Discrete Geometry</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_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">Dr. Ju-Feng  Wu (University College Dublin)</div><div class="event_title">Eigenstacks <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Eigenvarieties are geometric objects that parametrise finite-slope p-adic  automorphic forms. It is discovered by mathematicians that the geometry of eigenvarieties encodes interesting arithmetics of finite-slope automorphic forms. It is natural to ask what happens if one is interested in more general automorphic forms (not necessarily the finite-slope ones). In this talk, I will report on an ongoing joint work with Andrew Graham, where we construct eigenstacks, which see beyond finite-slope families of automorphic forms. </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"> Nejla Nouaili (Université Paris PSL)</div><div class="event_title">Various blow-up regimes for the Complex Ginzburg-Landau equation <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />The cubic Complex Ginzburg-Landau (CGL) equation is one of the most studied nonlinear equations in the physics community, where it attracted a lot of attention in the 1970’. It was first derived by Newell and Whitehead in 1969 as a model for instability in fluid convection problems, and used by Stewartson and Stuart in 1971, for the description of unstable plane Poiseuille flows.As for the math community, the first results were given around the year 2000. This delay is mainly due to the lack of structure in this parabolic system, where no variational structure exists and no maximum principle is available.Introducing new tools, we were able to rigorously construct some blow-up solutions for CGL, in different parameters’ regimes. This talk is dedicated to the proof of those results, in relation with the earlier physicists’ predictions.This is a joint work with G.K. Duong and H.Zaag.</div><div class="event_time">14:15 &bull; EPF Lausanne, MA A1 12</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/schools/sb/research/math/statistics-seminars/">Statistics Seminar </a></div><br /><div class="event_speaker"> Stéphanie  van der Pas (Amsterdam UMC)</div><div class="event_title">Bayesian regression discontinuity design with unknown cutoff <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />The regression discontinuity design (RDD) is a quasi-experimental approach used to estimate the causal effects of an intervention assigned based on a cutoff criterion. RDD exploits the idea that close to the cutoff units below and above are similar; hence, they can be meaningfully compared. Consequently, the causal effect can be estimated only locally at the cutoff point. This makes the cutoff point an essential element of RDD. However, especially in medical applications, the exact cutoff location may not always be disclosed to the researcher, and even when it is, the actual location may deviate from the official one. As we illustrate on the application of RDD to the HIV treatment eligibility data, estimating the causal effect at an incorrect cutoff point leads to meaningless results. The method we present, LoTTA (Local Trimmed Taylor Approximation), can be applied both as an estimation and validation tool in RDD. We use a Bayesian approach to incorporate prior knowledge and uncertainty about the cutoff location in the causal effect estimation. At the same time, LoTTA is fitted globally to the whole data, whereas RDD is a local, boundary point estimation problem. In this work we address a natural question that arises: how to make Bayesian inference more local to render a meaningful and powerful estimate of the treatment effect?</div><div class="event_time">14:15 &bull; EPF Lausanne, CM 1 517</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">Dr. Younghan Bae (University of Michigan)</div><div class="event_title"> Fourier transform and Abel-Jacobi theory <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Fourier analysis is a powerful tool in analysis. In the context of abelian schemes, Fourier-Mukai transformation and the weight decomposition play a similar role. For degenerate abelian fibrations, the relative group structure disappears and understanding the intersection theory leads to many interesting questions. In this talk, I will connect Fourier transform between compactified Jacobians over the moduli space of stable curves and logarithmic Abel-Jacobi theory. As an application, I will compute the pushforward of monomials of divisor classes on compactified Jacobians via the top degree part of the twisted double ramification formula of all codimensions. This is a joint work with Samouil Molcho and Aaron Pixton.</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>';