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SUMMARY:Federico Zerbini (Université Paris-Saclay)
DTSTART:20201208T080000Z
DTEND:20201208T083000Z
DTSTAMP:20260423T010921Z
UID:JENTE/17
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/JENTE/17/">S
 ingle-valued multiple zeta values\, and a class of modular forms from stri
 ng theory</a>\nby Federico Zerbini (Université Paris-Saclay) as part of J
 apan Europe Number Theory Exchange Seminar\n\n\nAbstract\nSingle-valued mu
 ltiple zeta values are special values at z=1 of single-valued multiple pol
 ylogarithms. They form a small subalgebra of the multiple zeta values\, wh
 ich was first studied in 2013 by Francis Brown and which seems to play an 
 important role in string theory. In particular\, genus-one string theory a
 mplitudes can be written in terms of a new class of non-holomorphic modula
 r functions whose asymptotic expansion coefficients are conjectured to be 
 single-valued multiple zeta values. I will introduce this class of functio
 ns\, known in physics as "modular graph functions"\, and I will report on 
 the proof of the conjecture for "two-point functions"\, obtained last year
  in collaboration with Don Zagier.\n
LOCATION:https://researchseminars.org/talk/JENTE/17/
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