# Taipei Postdoc Seminar

#### Upcoming Talk

[Cancellation]
Please notice the following has been cancelled.

## May 19 (Wed.) 14:00-15:00 Guan-Ru Yu (Institute of Statistical Science, Academia Sinica) Venue: Lecture Hall 5F, Cosmology Building, NTU Title: Bijections for Ranked Tree-Child Networks

Abstract:
The class of ranked tree-child networks, certain tree-child networks with a fixed embedding into the plane, has recently been introduced by Bienvenu, Lambert, and Steel. We derived counting results for this class. In this talk, I will give bijective proofs of three of their results. Two of our bijections answer questions raised in their paper. This is joint work with Alessandra Caraceni (Scuola Normale Superiore di Pisa, Italy) and Michael Fuchs (National Chengchi University, Taiwan).

2016

## Jan. 13, You Hung Hsu (NCTS) Exceptional Collections, t-structures and Categorical Action Mar. 10, Shih-Yu Chen (AS) On Deligne's Conjecture for Symmetric Fourth L-functions of Hilbert Modular Forms Mar. 24, Wei-Guo Foo (AS) Some Remarks on Second Order Ordinary Differential Equations Apr. 7, Jun-Wen Peng (University of Rochester) An Embedding of the Arboreal Galois Group for PCF Map Apr. 21, Yan-Yu Chen (NTU) Global Dynamics on One-dimensional Excitable Media

### The Taipei Postdoc Seminar is a weekly seminar that is organized jointly by the Institute of Mathematics of Academia Sinica and the National Center for Theoretical Sciences during the regular academic year. The seminar is held in these two mathematical institutions, with each one of them hosting the event approximately once every two weeks. The National Taiwan University, Academia Sinica, and the NCTS, together employ a significant number of postdoctoral fellows in mathematics from all over the world every year. The diverse scientific and cultural backgrounds of these postdocs create a unique environment of learning, and the goal of the Taipei Postdoc Seminar is to take advantage of this opportunity by bringing together all these postdocs once in a week in an informal-style seminar to enhance discussions and exchange of ideas among the participants. It is our belief that not only will this seminar encourage and eventually lead to more collaboration among mathematicians in Taipei, but it will also give the participants a chance to broaden their own scientific viewpoints. It is our hope that this seminar will greatly enrich the academic experience of the postdoctoral fellows during their stay in Taipei. Organizers: Wei-Bo Su (wbsu@gate.sinica.edu.tw), Peng-Jie Wong (pengjie.wong@ncts.tw)

Former organisers