qsms.math.snu.ac.kr - [QSMS Symplectic topology seminar-20230828] From Babylonian lunar observations to global surfaces of section

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일정시작	2023-08-28
일정종료	2023-08-28
배경색상	#FF5733

일정시작

2023-08-28

일정종료

2023-08-28

배경색상

#FF5733

Date: 2023-08-28 (Mon) 15:00 ~ 17:00
Place: 129-406 (SNU)
Speaker: Urs Frauenfelder (University of Augsburg)
TiTle: From Babylonian lunar observations to global surfaces of section
Abstract: When Newton thought about the moon he always got a headache. The moon is a complicated dynamical system since it is not just attracted by the earth but on a similar scale by the sun. In their endeavour to predict lunar and solar ellipses the Babylonians knew already about three months, the synodic, the anomalistic and the draconitic one. I will explain in the talk how they are related to Floquet multipliers and about their importance in the construction of global surfaces of section for the restricted three-body problem using holomorphic curves as well as their role in space mission design.

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[SNU Number Theory Seminar 30 June] Do Tropical Markov Cubics dream of Hyperbolic Origami?

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