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SUMMARY:John Lesieutre (Pennsylvania State University)
DTSTART:20210323T100000Z
DTEND:20210323T110000Z
DTSTAMP:20260423T052839Z
UID:ZAG/105
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/ZAG/105/">Ra
 tional surface automorphisms without periodic curves</a>\nby John Lesieutr
 e (Pennsylvania State University) as part of ZAG (Zoom Algebraic Geometry)
  seminar\n\n\nAbstract\nAlthough there are many examples known of infinite
 -order automorphisms of rational surfaces\, in most cases these automorphi
 sms have at least one periodic curve C (a curve for which f^n(C) = C for s
 ome n).  I will explain the construction of a class of rational surfaces w
 hich admit a large group of automorphisms with no invariant curves.  The e
 xample makes use of several classical constructions\, and the surfaces adm
 it contructions down to three different Coble surfaces.\n
LOCATION:https://researchseminars.org/talk/ZAG/105/
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