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.
Date
Friday, February 22, 2019 - 14:00 to 16:00
Peer Review: a Practical Guide to Helping Improve Others’ Research
Date
Thursday, March 28, 2019 - 12:00 to 13:00
This talk provides an overview of these changes and touches on the possible consequences of new initiatives, which can be applied by researchers in their roles as authors, readers, referees and editors.
Everyone is welcom! No registration is required!
Date
Monday, March 4, 2019 - 14:00 to 15:00
Prof. Andrzej Cichocki
Skolkovo Institute of Science and Technology (SKOLTECH), Moscow
"Tensor Decomposition and Tensor Networks and their applications, especially in Brain Computer Interface and recognition of Human Emotions"
Date
Tuesday, February 19, 2019 - 16:30 to 17:30
Title: Neuromorphic Dynamics towards Symbiotic Society
- an overview, neural computation, artificial pain, and beyond -
Speaker: Minoru Asada Adaptive Machine Systems, Graduate School of Engineering & Symbiotic Intelligence Research Center, OTRI Osaka University
Date
Thursday, February 14, 2019 - 13:00 to 15:00
We are offering Q&A session today from 1pm – 3pm to answer your questions. Please take this opportunity to ask any questions.
Date: Feb. 14th from 1pm to 3pm
Place: Meeting Room C15, Lab 1
Intended participants: all the SciFinder users
＊Our choice of SciFinder product will be based on your opinions. It is very important that you participate in this Trial so that you can give us your opinions about them. ＊
Date
Friday, February 22, 2019 - 14:30 to 15:00
Speaker: Prof. Henrik Krehenwinkel, Universität Trier, Germany
Date
Friday, February 22, 2019 - 14:00 to 14:30
Speaker: Dr. Susan Kennedy, the Biodiversity and Biocomplexity Unit (Economo Unit)
Date
Wednesday, February 27, 2019 - 14:00 to 16:00
Seminar by George Elliott (University of Toronto). All is welcome. Feb.27, 2019, 14:00-16:00 (C210)
Date
Monday, February 25, 2019 - 13:30 to 14:30
Dr. Çağlar Girit, French National Research Agency (CNRS) & College de France
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