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<p style="font-size: 14px; font-family: Roboto, sans-serif; background-color: #ffffff;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">Değerli liste üyeleri,</span><br /><br /><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">2026 Arf Konuşması, <strong style="font-weight: bolder;">8 Mayıs 2026 tarihinde saat 15:40'ta ODTÜ Matematik Bölümü Arf Amfisi M-13'te Alfréd Rényi Matematik Enstitüsü'nden András Stipsicz</strong> tarafından verilecektir. Konuşmaya ait bilgileri aşağıda bulabilirsiniz. Etkinlik sayfasına ODTÜ Matematik Bölümü web sitesinden erişilebilir (<a class="v1moz-txt-link-freetext" style="color: #00acff; background-color: transparent;" href="https://math.metu.edu.tr/en/arf-lectures" target="_blank" rel="noopener noreferrer">https://math.metu.edu.tr/en/arf-lectures</a>). Etkinlik posteri e-postaya ek olarak gönderilmiştir.</span><br /><br /><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><strong style="font-weight: bolder;">Konuşmacı:</strong> András Stipsicz<br /></span><br /><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><strong style="font-weight: bolder;">Başlık:</strong> Exotica in dimension four<br /></span><br /><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><strong style="font-weight: bolder;">Özet:</strong> Four-dimensional spaces behave very differently than spaces of any other dimension. This 'exotic' behavior was unrevealed by work of Freedman and Donaldson in the early 80's, and led to several surprising and interesting discoveries since then. In the lecture we will concentrate on exotica on 'definite' four-manifolds, and indicate their relevance in the 'smooth four-dimensional Poincaré conjecture' the last open question in this circle of problems regarding the topology of spheres.</span><br /><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><strong style="font-weight: bolder;"><br />Saat - Yer:</strong> 15:40 - </span><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">ODTÜ Matematik Bölümü, Cahit Arf Amfisi (M-13)</span></p>
<p><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif; background-color: #ffffff;">Saygılarımla,</span></p>
<p><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif; background-color: #ffffff;">ODTÜ Matematik Bölümü adına,</span></p>
<p><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif; background-color: #ffffff;">Oğuz Şavk</span></p>
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