Dear colleagues:

We announce the following seminar at IPMU
(the Institute for the Physics and Mathematics of the Universe).

Regards,

Satoshi Kondo (IPMU)
http://ipmu.jp/

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Speaker: Duco van-Straten  (Mainz univesity)

Date: Aril 6 (Fri) 13:30 - 15:00

Place: Seminar room A, IPMU

Title: Conifold-Period Expansions

Abstract:
In the current picture mirror symmetry
for Calabi-Yau 3 folds is linked up with
points in the moduli space of maximal
degeneration. However, recently examples
of Calabi-Yau threefolds without such points
were described by B. van Geemen, A. Garbagnati
and J. Rohde. I will report on recent joint work
with S. Cynk on the computation of conifold
periods, which led to the discovery of new
examples, whose  Picard-Fuchs equation has
Sp_4 as differential Galois group.
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You can check the location from
http://www.ipmu.jp/access-0
The schedule of the seminar can be checked from
http://db.ipmu.jp/seminar/