Date
Friday, April 19, 2019 - 11:00 to 12:00
Dr. Atsushi Takahara, Professor at Kyushu University
1JST ERATO Takahara Soft Interfaces Project
2International Institute for Carbon-Neutral Energy Research (I²CNER), Kyushu University
3Institute for Materials Chemistry and Enginering, Kyushu Universtity
Date
Wednesday, February 27, 2019 - 14:00 to 15:00
Speaker:
By Dr Joshua Goldberg, Department of medical Neurobiology, The Hebrew University of Jerusalem http://joshgoldberg.ekmd.huji.ac.il
Date
Wednesday, March 6, 2019 - 11:00 to 12:00
Prof. Ada Yonath, Nobel Laureate in chemistry 2009, Weizmann Institute of Science
Language: English
Date
Thursday, March 7, 2019 - 16:00 to 17:00
Prof. Donald Hilvert, Laboratory of Organic Chemistry, ETH Zürich, Zurich, Switzerland.
Language: English
Date
Wednesday, February 27, 2019 - 16:00 to 17:00
"Dr. Sei Sai, Senior Researcher, National Institutes for Quantum and Radiological
Science and Technology. Language: English, no interpretation."
Date
Wednesday, March 6, 2019 - 13:00 to 14:00
"Dr. Toru Hirota, Chief, Cancer Institute of the Japanese Foundation for Cancer Research. Language: English, no interpretation."
Date
Wednesday, February 27, 2019 - 13:00 to 14:00
"Dr. Kentaro Semba, Professor, Waseda University. Language: English, no interpretation."
Date
Tuesday, March 5, 2019 - 10:30 to 11:30
Seminar by Chushun Tian, Professor at Institute of Theoretical Physics, Chinese Academy of Sciences. All is welcome.
Date
Tuesday, April 2, 2019 - 10:00 to 11:00
Speaker: Dr. Sarah Kostinski, Postdoc at Tel Aviv University. Apri 2 at 10am in C016-Lab1.
Date
Monday, February 25, 2019 - 16:00 to 17:00
Abstract: The sphere packing problem in d dimensions asks for the densest packing of spheres in d-dimensional Euclidean space R^d. Prior to 2016, the problem had only been solved in dimensions 2 and 3 (with the solution in dimension 3 being Hales's famously complicated solution to Kepler's conjecture), and solutions in most other dimensions were thought to be out of reach, except for dimensions 8 and 24 where overwhelming numerical and theoretical evidence supported the conjectures pointing at specific lattices as the optimal packings. In a breakthrough in 2016, Maryna Viazovska published a stunning proof for the 8-dimensional case, followed up shortly with a proof for the 24-dimensional case with several coauthors. The solutions work by using a previous reduction of the problem (due to Henry Cohn and Noam Elkies) to a problem in harmonic analysis, and ingeniously solving that analysis problem using number-theoretic tools - specifically, the mathematics of modular forms.
In this talk I will give a quick survey of these developments and the beautiful new challenges and opportunities that they open up for attacking this classical geometry problem. I will also discuss my own recent results on infinite series representations for the Riemann xi function and explain how Viazovska's work, which appears not strongly related to the problem I was studying, nonetheless provided me with useful inspiration.
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