var sms = '<div id="sms_bulletin">  <div id="sms_header">  <div class="do_not_print" id="arrow_left"><a href="?next=-2"><img src="//www2.math.ethz.ch/smsjs/images/arrow_left.png"/></a></div><div class="do_not_print" id="arrow_right"><a href="?next=0"><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. 2</span>      <span style="float: right; text-align:right; width: 250px;">9.6 - 13.6.2025</span>      <span style="text-align: center; display: block; width: 250px; margin: auto; position: relative;">Summer Break 2025</span>    </div>  </div>  <div></div>  <div id="sms_content">    <div class="day">      <div class="day_title">        Monday, June 9      </div>      <div class="day_content">        <div class="day_content_item no_event">        No events scheduled today!        </div>      </div>    </div>    <div class="day">      <div class="day_title">        Tuesday, June 10      </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/seminaire-danalyse-numerique">Séminaire d\'Analyse Numérique </a></div><br /><div class="event_speaker"> Tommaso Vanzan</div><div class="event_title">Approximation of moments of Banach-valued random variables using Monte Carlo methods <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />his talk addresses the numerical approximation of k-th moments of Banach-valued random variables using Monte Carlo methods.One major difficulty is that classical textbook convergence and complexity analysis of Monte Carlo methods does not applysince it heavily relies on the scalar product structure of an underlying Hilbert space.Consequently, we will begin reviewing known results on the approximation of the mean of random variables valued in infinite-dimensional Banach spaces,introducing the concepts of the Rademacher type and constant of a Banach space.However, a simple numerical experiment shows that these analyses are not sharp when considering finite dimensional approximations, as typical in numerical analysis.This motivates us to refine the available theory by either taking into account the dependency of Rademacher constants on the dimension of the approximation space, or by using a particular argument valid exclusively in $L^p$ spaces.Numerically experiments will show that our results precisely describe the asymptotic complexity of a Monte Carlo estimator.If time permits, we will finally introduce a novel sparse estimator for general k-th moments, along with corresponding convergence and complexity results.This is based on an ongoing work with Kristin Kirchner (Delft TU & KTH), Fabio Nobile (EPFL) and Christoph Schwab (ETH).</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">EPF Lausanne</a></div><div class="event_type"><a class="external" href="https://calendar.google.com/calendar/embed?mode=AGENDA&height=600&wkst=2&bgcolor=%23FFFFFF&src=t36it03v52cus2detrvinlgk18%40group.calendar.google.com&color=%235F6B02&ctz=Europe%2FZurich">Groups, Arithmetic and Algebraic Geometry Seminar </a></div><br /><div class="event_speaker"> Henri  Darmon  (McGill University, Montreal)</div><div class="event_title">Maximal tori in orthogonal groups and explicit class field theory <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br /> Maximal tori in an orthogonal group  of signature (n,2) give rise to special points on an orthogonal Shimura variety which are   defined over class fields of an associated CM field. A largelyconjectural framework for associating class invariants to orthogonal groups and maximal tori of arbitrary realsignatures will be discussed.</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/labs/mathicse/">Computational Science and Engineering </a></div><br /><div class="event_speaker"> Abdul-Lateef  Haji-Ali (Heriot-Watt University, Edinburgh, UK)</div><div class="event_title">Multiindex Monte Carlo method for semilinear stochastic partial differential equations <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 an exponential-integrator based mulitiindex Monte Carlo method (MIMC) for weak approximations of mild solutions of semilinear stochastic partial differential equations (SPDE). I will present the recent theoretical results on multiindex coupled solutions of the SPDE, namely that such couplings are stable and satisfy multiplicative error estimates, and describe how this theory can be utilized to obtain a tractable MIMC method. Numerical examples show that MIMC outperforms alternative methods, such as multilevel Monte Carlo, in settings with low regularity. I will also briefly discuss another recent work that extends the analysis of the truncated-Milstien scheme with an antithetic estimator to SPDEs.</div><div class="event_time">16:15 &bull; EPF Lausanne, MA A1 10</div>        </div>      </div>    </div>    <div class="day">      <div class="day_title">        Wednesday, June 11      </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/analysis/analysis-seminar">Analysis Seminar</a></div><br /><div class="event_speaker"> Luigi De Rosa (GSSI L\'Aquila)</div><div class="event_title"><a class="external" href="https://dmi.unibas.ch/de/news-events/detail/seminar-analysis-and-mathematical-physics-luigi-de-rosa-gssi-laquila/">Dissipation concentration in 2D fluids</a> <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />We present several constraints on the energy dissipation measure arising in the inviscid limit of 2D incompressible Navier-Stokes. The approach is quite measure theoretic, strongly connected with the "concentration compactness" principle à la Lions. Since the dynamics adds some technicalities, the main proofs will be given for the (simplified) steady case. Based on ongoing projects with Jaemin Park (Yonsei University).</div><div class="event_time">14:15 &bull; Universität Basel, Spiegelgasse 5, Seminarraum 05.001</div>        </div>      </div>    </div>    <div class="day">      <div class="day_title">        Thursday, June 12      </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/kolloquium">Perlen-Kolloquium</a></div><br /><div class="event_speaker"> Marco Inversi</div><div class="event_title"><a class="external" href="https://dmi.unibas.ch/de/news-events/detail/doktoratskolloquium-mathematikmarco-inversi/">Energy conservation and intermittency in incompressible turbulence</a> <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Der Vortrag ist universitätsöffentlich. <a href="https://unibas.zoom.us/j/61649075342?pwd=INb8xMeiAt1aEJCqyiXGWhE2m8l7HY.1" target="_blank">https://unibas.zoom.us/j/61649075342?pwd=INb8xMeiAt1aEJCqyiXGWhE2m8l7HY.1</a> ID meeting : 616 4907 5342 Passcode: 182300</div><div class="event_time">16:15 &bull; Universität Basel, Hörsaal 120, Kollegienhaus, Universität Basel</div>        </div>      </div>    </div>    <div class="day">      <div class="day_title">        Friday, June 13      </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.epfl.ch/labs/hessbellwald-lab/seminar/epfl-topology-seminar-fall-2024/">Séminaire de Topologie </a></div><br /><div class="event_speaker"> Ian Hambleton (McMaster University)</div><div class="event_title"><a class="external" href="https://www.epfl.ch/labs/hessbellwald-lab/3141-2/">Finite 2-complexes and 4-manifolds</a> <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />From a finite 2-complex X, one can construct a closed, smooth 4-manifold M(X), for example as the boundary of a thickened embedding in 5-dimensional Euclidean space. If X and Y have isomorphic fundamental groups, then J H C Whitehead (1939) proved that X and Y become stably homotopy equivalent after adjoining some number of copies of the 2-sphere. The talk will discuss the analogous 4-dimensional stable and unstable uniqueness question. We produce arbitrarily large families of smooth 4-manifolds M(X), by varying X with a given fundamental group, which are all stably diffeomorphic but pairwise distinct up to homotopy. This is joint work with John Nicholson (University of Glasgow).</div><div class="event_time">14:15 &bull; <a class="external" href="https://plan.epfl.ch/?room==CM%201%20517">EPF Lausanne</a></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>';