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SUMMARY:Annette Huber (Universität Freiburg)
DTSTART:20201118T160000Z
DTEND:20201118T170000Z
DTSTAMP:20260418T065400Z
UID:LNTS/17
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/LNTS/17/">Ex
 ponential periods and o-minimality</a>\nby Annette Huber (Universität Fre
 iburg) as part of London number theory seminar\n\n\nAbstract\n(joint work 
 with Johan Commelin and Philipp Habegger)\nRoughly\, period numbers are de
 fined by integrals of the form\n$\\int_\\sigma\\omega$ with $\\omega$ and 
 $\\sigma$ of algebraic nature.\nThis can be made precise in very different
  languages: as values of\nthe period pairing between de Rham cohomology an
 d singular homology\nof algebraic varieties or motives defined over number
  fields\, or more\nnaively as\nvolumes of semi-algebraic sets.\n\nMore rec
 ently\, exponential periods have come into focus. Roughly\, they\nare of t
 he form $\\int_\\sigma e^{-f}\\omega$ with $\\sigma\,\\omega$ and now\nals
 o $f$ of algebraic nature. They appear are periods for the Rham complex\no
 f an irregular connection. We want to explain how the "naiv" side of\nthe 
 story can be formulated in this case.\n
LOCATION:https://researchseminars.org/talk/LNTS/17/
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