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SUMMARY:Bruno de Oliveira (University of Miami)
DTSTART:20260325T143000Z
DTEND:20260325T153000Z
DTSTAMP:20260423T010753Z
UID:GPL/51
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/GPL/51/">On 
 surfaces of general type with extremal cotangent dimension</a>\nby Bruno d
 e Oliveira (University of Miami) as part of Geometry and Physics @ Lisbon\
 n\nLecture held in 6.2.33 (Seminar Room\, Math\, FCUL).\n\nAbstract\nIn th
 is talk we give a brief survey on the cotangent dimension for surfaces. Th
 en we present several results describing general conditions that guarantee
  that a surface has maximal cotangent dimension\, i.e. it is big. We focus
  on an approach via fibrations whose orbifold base is of Campana general t
 ype. Finally\, we address minimal cotangent dimension\, i.e. absence of sy
 mmetric differentials\, for surfaces of general type. Here\, the approach 
 uses double covers and symmetric logarithmic differentials. We give specia
 l attention to the class of surfaces named Horikawa surfaces. This talk de
 scribes joint work with D. Brotbek and E. Rousseau.\n
LOCATION:https://researchseminars.org/talk/GPL/51/
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