var sms = '<div id="sms_bulletin">  <div id="sms_header">  <div class="do_not_print" id="arrow_left"><a href="?next=0"><img src="//www2.math.ethz.ch/smsjs/images/arrow_left.png"/></a></div><div class="do_not_print" id="arrow_right"><a href="?next=2"><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. 12</span>      <span style="float: right; text-align:right; width: 250px;">1.12 - 5.12.2025</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, December 1      </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"> 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://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"> Fabio Gironella (Université de Nantes)</div><div class="event_title">Confoliations in high dimensions <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />In a pioneering work of 1998, Eliashberg and Thurston proved that, in ambient dimension 3, C^2 foliations can always (besides one example) be C^0-approximated by contact structures in the space of plane fields. To do so, they introduce what they called ``confoliations\'\', that are geometric structures which are mid-way between foliations and contact structures. While these have been studied extensively in dimension 3 by many authors, the situation in higher dimensions is less clear, and there is not even a consensus on what their definition should be. In this talk, I will introduce a new notion of high-dimensional symplectic confoliation, and describe how on one hand it naturally leads to a notion of approximation by contact structures that encompasses all previously known ad-hoc examples, and on the other hand how it also constitute a good class of structures, generalizing contact ones, of which one can study symplectic fillability questions. This is based on work joint with Robert Cardona and on work in progress joint with Seungook Yu.</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/mpseminar/seminar.html">Séminaire de Mathématique Physique </a></div><br /><div class="event_speaker"> Alexander  Drewitz  (Universität zu Köln)</div><div class="event_title">Title T.B.A.</div><div class="event_time">16:15 &bull; Université de Genève, Conseil Général 7-9, Room 1-15</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_be"><a class="external" href="https://www.unibe.ch">Universität Bern</a></div><div class="event_type"><a class="external" href="https://www.math.unibe.ch/research/talks/colloquium/index_eng.html">Mathematisches Kolloquium </a></div><br /><div class="event_speaker">Prof. Dr. Bernhard Krötz (Universität Paderborn)</div><div class="event_title"><a class="external" href="https://www.math.unibe.ch/research/talks/colloquium/index_eng.html">Über Normen auf Harish-Chandra Moduln</a> <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Der Satz von Casselman-Wallach ist ein grundlegendes Resultat in der Theorie der Darstellungen reeller reduktiver Gruppen, das algebraische Darstellungen mit topologischen Darstellungen verbindet. Wir liefern eine quantitative Version dieses Satzes. Dazu führen wir den Begriff der Sobolev-Lücke für einen Harish-Chandra-Modul ein. Dies ist eine neue Invariante, deren Endlichkeit nicht offensichtlich ist. Wir bestimmen die Sobolev-Lücke für Darstellungen im unitären Dual der Gruppe SL(2,R) und beweisen allgemein gleichmäßige Endlichkeitsresultate für Darstellungen der diskreten Reihe und der minimalen Hauptreihe. Wir verwenden diese Begriffe, um klassische Ergebnisse von Bernstein und Reznikov über automorphe Funktionale bezüglich kokompakter Gitter neu zu formulieren und zu erweitern. Insbesondere beweisen wir eine abstrakte Konvexitätsschranke, die für automorphe Funktionale bezüglich allgemeiner Gitter in SL(2, R) gilt und unabhängig vom Typ des unitarisierbaren irreduziblen Harish-Chandra-Moduls ist.Wir berichten über eine gemeinsame Arbeit mit Joseph Bernstein, Pritam Ganguly, Job Kuit und Eitan Sayag. Die Arbeit selbst ist unter https://arxiv.org/pdf/2510.09370 abrufbar. </div><div class="event_time">17:15 &bull; Universität Bern, Sidlerstrasse 5, 3012 Bern, Room B6</div>        </div>      </div>    </div>    <div class="day">      <div class="day_title">        Tuesday, December 2      </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"> Clara  Skowronek  Santos  (Complutense University of Madrid)</div><div class="event_title">Commensurators and Grigorchuk\'s groups <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />The abstract commensurator of a group G is a generalization of its group of automorphisms. More concretely, it is a quotient of the set of almost automorphisms of G, that is, the set of isomorphisms between finite index subgroups of G. These commensurators have been studied for certain examples of groups, such as the first Grigorchuk group, and we are currently studying the commensurator of more groups of these family of Grigorchuk\'s groups.C.E.Röver showed that the commensurator of the first Grigorchuk group G is the group generated by the Highman Thompson group G_2,1 and the group G itself. In this talk, I will discuss this commensurator and the one of the Grigorchuk-Erschler group, which can be obtained by similar techniques. I will also present some preliminary results about the automorphism group of a large subfamily of the family of Grigorchuk\'s groups, which we hope will be useful to compute their commensurators. This is ongoing joint work with Alejandra Garrido.</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_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"> Eugen Bronasco (Chalmers, Gothenburg)</div><div class="event_title">Butcher Series for the Convergence Analysis of Iterative Numerical Integrators: SDC and Parareal <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />We present a Butcher series framework for analyzing the convergence of the Spectral Deferred Correction (SDC) and Parareal methods. SDC iteratively improves a low order approximation to achieve high order accuracy, while Parareal introduces parallelism in time by combining coarse and fine propagators. By expressing both algorithms as Runge-Kutta methods whose Butcher tableaus grow with each iteration, we apply classical Butcher series techniques to study their convergence. For SDC, we obtain convergence results under weaker assumptions, explain and exploit the order jump phenomenon, where the observed order of accuracy exceeds theoretical predictions, and design correctors that consistently produce it. For Parareal, we recover and refine known convergence results, offering problem agnostic insights into the structure of iterative time integration algorithms. This talk is based on joint work with Joscha Fregin (TUHH), Ausra Pogozelskyte, Daniel Ruprecht (TUHH), Gilles Vilmart (Univ. of Geneva).</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_dis"><a class="external" href="https://unidistance.ch">UniDistance Suisse</a></div><div class="event_type"><a class="external" href="https://unidistance.ch/en/mathematiques-et-informatique/recherche/number-theory/number-theory-seminar">Number Theory Seminar</a></div><br /><div class="event_speaker"> Dominik Bullack  (ICMAT Madrid)</div><div class="event_title">On Euler systems and Neková&#345;--Selmer complexes <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Euler systems have led to spectacular progress on conjectures concerning the special values of motivic L-series. In recent joint work with David Burns we further develop the axiomatic theory of Euler systems by allowing more general coefficient rings and by systematically incorporating Neková&#345;--Selmer complexes into the framework. I will give an overview of our results, including some concrete arithmetic applications that this refined theory has.</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_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/mat075.1">Zurich Graduate Colloquium</a></div><br /><div class="event_speaker">Abhinaba Mazumder (Universität Zürich)</div><div class="event_title">What are... equivalent codes?</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, December 3      </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/studium/mathematik/doktorat/bernoullis-tafelrunde">Bernoullis Tafelrunde</a></div><br /><div class="event_speaker"> Flavio Dalessi (Basel)</div><div class="event_title"><a class="external" href="https://dmi.unibas.ch/de/studium/mathematik/doktorat/bernoullis-tafelrunde/detail/bernoullis-tafelrunde-flavio-dalessi-basel/">Title T.B.A.</a></div><div class="event_time">12:15 &bull; Universität Basel, Seminarraum 05.001</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. Dan Petersen (Stockholm University)</div><div class="event_title">Title T.B.A.</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_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"> Stéphane Lamy (Toulouse)</div><div class="event_title">Polynomial automorphisms and negative curvature <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Polynomial or birational transformations of &#8450;<sup>n</sup> form huge groups as soon as n > 1, and the following basic questions are open in general:&lt;ul>  &lt;li>Do they admit normal subgroups (apart from the obvious subgroup of Jacobian 1 automorphisms in the polynomial case)?  &lt;/li>  &lt;li>Do they satisfy a Tits alternative, as in the linear case?&lt;/li>  &lt;li>Is any finite subgroup conjugate to a subgroup of GL(n)?&lt;/li>&lt;/ul>After explaining the context, I will discuss some particular cases in dimensions 3 and 4 where we can answer these questions, using some actions on some metric spaces with negative curvature. (based on several joint works with P. Przytycki)</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">Dr. Joffrey Mathien (Aix-Marseille Université (AMU))</div><div class="event_title">Cutoff for geodesic path and Brownian motion on hyperbolic manifolds <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />For an ergodic dynamical system, the cutoff describes an abrupt transition to equilibrium. Historically introduced in seminal work by Diaconis, Shahshahani and Aldous for card shuffling and other random walks on finite groups, there are now numerous examples of Markov chains and Markov processes where the cutoff has been established.Most of the current examples are on finite spaces. In this talk, we study cutoff for classical processes -- namely Brownian motion and geodesic paths -- on compact hyperbolic manifolds, and we develop a spectral strategy introduced by Lubetzky and Peres in 2016 for Ramanujan graphs and further developed in different geometric contexts. In particular, we extend results obtained by Golubev and Kamber in 2019 to any dimension and still are able to obtain cutoff under weaker hypothesis.Joint work with C. Bordenave</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, December 4      </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_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"> Paul Dütting</div><div class="event_title">Title T.B.A.</div><div class="event_time">11:00 &bull; EPF Lausanne</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/zahlentheorie/">Seminar Zahlentheorie</a></div><br /><div class="event_speaker"> Jerson Caro (Boston University)</div><div class="event_title"><a class="external" href="https://dmi.unibas.ch/de/news-events/detail/number-theory-seminar-jerson-caro-boston-university/">Title T.B.A.</a> <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Title: TBA Abstract: tba</div><div class="event_time">14:15 &bull; Universität Basel</div>        </div>        <div class="day_content_item normal"><div class="event_location uni_la"><a class="external" href="https://www.epfl.ch">EPFL 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"> Hugo Moeneclaey (University of Gothenburg)</div><div class="event_title">Synthetic Stone Duality: A Synthetic Approach to Condensed Mathematics <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Synthetic Stone duality is an extension of Homotopy Type Theory (HoTT) by 5 well-chosen axioms. These axioms are validated by the interpretation of HoTT in the higher topos of light condensed anima. Therefore, any results we prove in synthetic Stone duality can be interpreted as a result about light condensed anima.First, we will explain the general concept of synthetic mathematics, with an emphasis on geometry, HoTT, higher topoi and cohomology. Then we will present the 5 axioms of Synthetic Stone duality and give detailed proofs of some of their elementary consequences, to give a feeling of how it is to work with them. We will then give an overview of our synthetic version of Theorem 3.2 from Peter Scholze Lecture Notes on condensed mathematics (itself adapted from Roy Dyckhoff). Our version states that the cohomology of a compact Hausdorff space with countably presented coefficients can be computed from a cover of X by a Stone space.If time permits, we will sketch applications of this result to the shape modality, which gives a convenient interface between topological spaces and their homotopy types.</div><div class="event_time">16:00 &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_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"> Dominik  Francoeur  (Madrid)</div><div class="event_title">Intersection-saturated groups and groups with micro-supported actions <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />A group is said to possess the Howson property if the intersection of any two finitely generated subgroups is again finitely generated. When a group fails to have the Howson property, one can try to characterise how far it is from having it. Such considerations give rise to the notion of intersection-saturated groups, introduced recently by Delgado, Roy and Ventura. In this talk, we\'ll see a new construction for intersection-saturated groups, based on so-called micro-supported actions, that allows one in particular to produce finitely presented amenable examples.</div><div class="event_time">16:15 &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://www.math.uzh.ch/mat675.1">PDE and Mathematical Physics</a></div><br /><div class="event_speaker">Prof. Dr. Lukas Koch</div><div class="event_title">Uniform Lipschitz estimates for regularised optimal transport <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />&lt;p>&lt;span style="caret-color: #000000; color: #000000; font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; display: inline !important; float: none;">I will discuss how to obtain Lipschitz estimates for regularised optimal transport problems using a variational approach. In particular, this&nbsp;&lt;/span>&lt;br style="caret-color: #000000; color: #000000; font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">&lt;span style="caret-color: #000000; color: #000000; font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; display: inline !important; float: none;">gives Lipschitz regularity for entropic optimal transport independent of the regularisation parameter. A crucial step in the approach are local&nbsp;&lt;/span>&lt;br style="caret-color: #000000; color: #000000; font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">&lt;span style="caret-color: #000000; color: #000000; font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; display: inline !important; float: none;">L^\\infty-estimates, which are of independent interest. The talk is based on joint work with Rishabh Gvalani (ETH).&lt;/span>&lt;/p></div><div class="event_time">16:15 &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://www.math.ethz.ch/mathematik-und-ausbildung/weiterbildung/kolloquium.html">Kolloquium über Mathematik, Informatik und Unterricht</a></div><br /><div class="event_speaker"> Guido Lob (Liceo cantonale di Locarno)</div><div class="event_title">Die Mathematik als Hilfsmittel des Taschenrechners <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Der Taschenrechner ist ein Wunderwerk: In wenigen Augenblicken erwacht ein Plastikrechteck zum Leben und kann uns Werte für Wurzeln, Logarithmen, Trigonometrischen Funktionen und vieles weiteres liefern.Was verbirgt sich hinter diesem scheinbar einfachen, aber so mächtigen Gerät? Es sind nicht nur Taylor-Polynome: Es gibt viele weitere mathematische Eigenschaften und Überlegungen, die in seinem Inneren genutzt werden, um die gewünschten Ergebnisse auf effiziente und elegante Weise zu erzielen.</div><div class="event_time">17:15 &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_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/la-une/maths-partag-2024">Maths à PartaG</a></div><br /><div class="event_speaker"> Etienne  Ghys (ENS Lyon)</div><div class="event_title">Les merveilles de la géométrie des lettres de l’alphabet <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Pendant des siècles, les copistes écrivaient des livres à la main. En 1455 Gutenberg a tout bousculé et on a commencé à fondre des caractères en plomb. Avant de les fondre, il fallait les dessiner. Les graveurs les plus célèbres de la Renaissance ont modifié la forme des lettres pour qu’elles soient lisibles et jolies. Ils ont utilisé les outils dont ils disposaient : des règles et des compas. Il y a quarante ans, tout a basculé avec l’explosion de l’informatique. Comment dessiner les caractères d’imprimerie en respectant le magnifique travail des artistes de la Renaissance ? Cet exposé sera un très rapide survol de l’histoire de la typographie vue par un géomètre.</div><div class="event_time">18:30 &bull; Université de Genève, Uni Dufour, U300</div>        </div>      </div>    </div>    <div class="day">      <div class="day_title">        Friday, December 5      </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/anmath/seminars/">Seminar of Analysis </a></div><br /><div class="event_speaker"> Guillaume  Carlier (Paris-Dauphine)</div><div class="event_title">Quantitative stability of push-forwards by optimal maps <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />In this talk, based on a joint work with Quentin Mérigot and Alex Delalande, I will discuss (sharp)quantitative stability of push-forwards by optimal transport maps. The main step of the proofrelies on a new bound (of independent interest) that quantifies the size of the singular set ofconvex functions in terms of covering numbers.</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">Dr. Sam Canning (ETH Zürich)</div><div class="event_title">Cohomology of the Satake compactification V</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>';