# Taipei Postdoc Seminar

## Jan. 13 (Wed.) 14:00-15:00 You Hung Hsu (NCTS) Venue: Lecture Hall 5F, Cosmology Building, NTU Title: Exceptional Collections, t-structures and Categorical Action

Abstract: In this talk, I will explain how to use categorical action of the shifted $q=0$ affine algebra to construct (or induce) t-structures on the weight categories. In particular, when the categories are the bounded derived category of coherent sheaves on Grassmannians or partial ag varieties, the t-structure we obtain is precisely the exotic t-structure which defined by R. Bezrukavnikov associated to the exceptional collections that given by M. Kapranov. As a by-product, we calculate some of the generators of the shifted $q=0$ affine algebra act on the basis given by the exceptional collections.

2016

## Mar. 4, Kazuki Tokimoto (AS) Affinoids in the Lubin-Tate Space at Infinite Level and the Local Langlands Correspondence Mar. 11, Kwok-Wing Tsoi (NTU) On the Theory of Higher Special Elements for p-adic Representations Mar. 18, Ziqing Xiang (AS) An invitation to spherical designs Apr. 8, Ji Guo (AS) An Overview of Some Progress on the Arithmetic of Linear Recurrences and the Complex Analogues Apr. 15, Jinwan Park (AS) The Regularity Theory for the Double Obstacle Problem Apr. 22, Andrea Galasso (NCTS) Asymptotics Expansions in Geometry and Quantization Apr. 29, Chih-Wei Chang (NCTS) Chamber Structures on Mori Dream Spaces May 06, Jia-Yuan Dai (NCTS) An invitation to pattern formation and feedback controls May 13, Hang Fu (NCTS) Arithmetic dynamics of rational maps May 20, Ser-Wei Fu (NCTS) Simple closed curves, foliations, and flat surfaces May 27, Yen-Liang Kuan (NCTS) The Mordell-Weil theorem for t-modules June 4, Chien-Hsun Wang (NCTS) Mirror Symmetry and Seiberg Duality June 10, Yi-Sheng Wang (NCTS) Classification of Knotted Objects June 17, Haewon Yoon (NCTS) Global existence versus finite time blowup dichotomy for the system of nonlinear Schrödinger equations-- Sep. 23, Wei-Bo Su (AS) An Introduction to Special Lagrangian Submanifolds and Lagrangian Mean Curvature Flow Sep. 30, Peng-Jie Wong (NCTS) Cyclicity of CM Elliptic Curves Modulo p in Short Intervals Oct. 7, Yao Cheng (AS) On the newform problem for split $SO_{2n+1}$ Oct. 14, Jesse Madnick (NCTS) Minimal Submanifolds in Exceptional Geometries via the Octonions Oct. 21, Yuan Shyong Ooi (NTU) Higher Codimension Minimal Surface System Oct. 28, Chun-Wei Chang (NCTS) Anticipating the Occurrence and Type of Critical Transitions Nov. 18, Yasuhiro Terakado (AS) Hecke Eigensystems of Automorphic Forms (mod p) of Hodge Type and Algebraic Modular Forms Dec. 2, Bin Nguyen (Universidade de Lisboa) Positivity of Direct Image Bundles Dec. 16, Iacopo Brivio (University of California, San Diego) On Algebraic Invariance of Plurigenera Dec. 30, Sheng-Fu Chiu (AS) Hamiltonian Dynamics and Symplectic Rigidity from the Viewpoint of Triangulated Categories

### 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