var sms = '<div id="sms_bulletin">  <div id="sms_header">  <div class="do_not_print" id="arrow_left"><a href="?next=-13"><img src="//www2.math.ethz.ch/smsjs/images/arrow_left.png"/></a></div><div class="do_not_print" id="arrow_right"><a href="?next=-11"><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. 6</span>      <span style="float: right; text-align:right; width: 250px;">27.1 - 31.1.2025</span>      <span style="text-align: center; display: block; width: 250px; margin: auto; position: relative;">Winter Break 2024/25</span>    </div>  </div>  <div></div>  <div id="sms_content">    <div class="day">      <div class="day_title">        Monday, January 27      </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, January 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/annonces/seminaire-danalyse-numerique">Séminaire d\'Analyse Numérique </a></div><br /><div class="event_speaker"> Christa Cuchiero (University of Vienna)</div><div class="event_title">Infinite dimensional Wishart processes <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />We introduce and analyse infinite dimensional Wishart processes taking values in the cone  of positive self-adjoint trace class operators on a separable real Hilbert space. Our main result gives necessary and sufficient conditions for their existence, showing that these processes are necessarily of fixed finite rank almost surely, but they are not confined to a finite-dimensional subspace. For showing existence we construct these processes as squares of Ornstein-Uhlenbeck processes. By providing explicit solutions to operator valued Riccati equations, we prove that their Fourier-Laplace transform is exponentially affine in the initial value.  We also demonstrate that matrix-valued Volterra-Wishart processes can be interpreted as infinite-dimensional Wishart processes via an appropriate lift.  Applications of our results range from tractable infinite-dimensional covariance modelling to the analysis of the limit spectrum of large random matrices.</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_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"> David Cimasoni (University of Geneva)</div><div class="event_title"><a class="external" href="https://www.unige.ch/math/GEM/nos-activites/maths-partag/math-partag-editions-suivantes/unige-ch-math-maths-partag-Cimasoni">La joie des maths ou comment joindre l\'utile &agrave; l\'agr&eacute;able</a> <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Les mathématiques, une science austère et rigide où tout a déjà été démontré? Certainement pas ! De l’Académie de Platon à Alexandre Grothendieck, David Cimasoni prendra appui sur les épaules de géants des mathématiques pour déconstruire ces idées reçues. Vous découvrirez une discipline vivante, expérimentale et pleine de surprises, où l’intuition et la créativité jouent un rôle essentiel. Laissez-vous embarquer dans un voyage joyeux au cœur des maths!</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">        Wednesday, January 29      </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">        Thursday, January 30      </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">        Friday, January 31      </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"> Andrea  Macrina (University College of London)</div><div class="event_title">Budgeting for a future: the time-value of carbon flows <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />If the leading principle is that reducing carbon emissions today is more valuable than reducing emissions tomorrow, how should financial carbon discounting work? How should emissions abatement costs be linked to the cost of damages due to global warming in a discounting system? Starting from carbon budgets that limit global warming to under a specified level with a given probability, a carbon discount bond system is developed that depends on the stochastic carbon emissions and an associated emissions abatement plan. We show that the sooner and more capital is invested to reduce carbon emissions, the better. The proposed financial design and pricing approach also considers the notion of a carbon budget debt and its financial treatment in a tiered carbon discounting system. Hedge portfolios and carbon budget derivatives emerge that mitigate financial losses if emissions exceed a planned/mandated carbon budget.</div><div class="event_time">14:00 &bull; EPF Lausanne, Internef 121</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/tggroup/doku.php?id=fables">Séminaire "Fables Géométriques" </a></div><br /><div class="event_speaker"> Thomas Blomme (Neuchâtel)</div><div class="event_title">A short proof of the multiple cover formula <span class="abstract-button do_not_print">abstract</span></div><div class="abstract-text" style="display: none"><strong>Abstract:</strong><br />Enumerating genus g curves passing through g points in an abelian surface is a natural problem, whose difficulty highly depends on the degree of the curves. For "primitive" degrees, we have an easy explicit answer. For "divisible" classes, such a resolution is quite demanding and often out of reach. Yet, the invariants for divisible classes easily express in terms of the invariants for primitive classes through the multiple cover formula, conjectured by G. Oberdieck a few years ago. In this talk, we\'ll show how tropical geometry enables to prove the formula without any kind of concrete enumeration. </div><div class="event_time">14:00 &bull; Université de Genève, Conseil Général 7-9, Room 1-07</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>';