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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Dear all,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Tomorrow Leonardi will speak in NU2b18 at 11:00<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt">AG</span></b><b><span style="font-size:11.0pt">
<span lang="EN-US">NU2B18 11:00</span></span></b><b><span style="font-size:11.0pt">: 12-11-2024 in NU2B18: <a href="https://www.mathga.rwth-aachen.de/en/~masci">Leonardo Masci</a>: A Poincare-Birkhoff Theorem for Asymptotically Linear Hamiltonian Diffeomorphisms<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:11.0pt">The celebrated Poincar</span><span lang="EN-US" style="font-size:11.0pt">e</span><span style="font-size:11.0pt">-Birkhoff theorem on area-preserving maps of the annulus is of fundamental importance in the
fields of Hamiltonian dynamics and symplectic topology. In this talk I will formulate a twist condition, inspired by the Poincar</span><span lang="EN-US" style="font-size:11.0pt">e</span><span style="font-size:11.0pt">-Birkhoff theorem, which applies to the
asymptotically linear Hamiltonian diffeomorphisms of Amann, Conley and Zehnder. When this twist condition is satisfied, together with some technical assumptions, the existence of infinitely many periodic points is obtained.</span><span lang="EN-US" style="font-size:11.0pt"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">This Friday more factorization at the VU with a mystery speaker at 15:00.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Best,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Thomas<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
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