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SUMMARY:Jeff Viaclovsky
DTSTART:20220512T160000Z
DTEND:20220512T170000Z
DTSTAMP:20260423T004728Z
UID:GeoSem/42
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/GeoSem/42/">
 Gravitational instantons\, rational surfaces\, and K3 surfaces</a>\nby Jef
 f Viaclovsky as part of Geometry Seminar - University of Florence\n\n\nAbs
 tract\nI will describe some examples of complete non-compact\nRicci-flat m
 etrics in dimension 4\, which are called "gravitational\ninstantons." In m
 any cases\, these can be compactified complex\nanalytically to rational su
 rfaces. I will also discuss how these\ngravitational instantons can arise 
 from sequences of degenerating\nRicci-flat metrics on the compact K3 surfa
 ce\, through a process called\n"bubbling".\n
LOCATION:https://researchseminars.org/talk/GeoSem/42/
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