# Colloquium Lectures

Colloquium Lecture

The Habiro ring, Lie algebras, and invariants of 3-manifolds

Speaker: Prof. Le Tu Quoc Thang

Colloquium Lecture

Defect profiles in nematic liquid crystals: 2d vs 3d

Speaker: Prof. Nguyen Luc, Oxford University, UK

Colloquium Lecture

Physics and Mathematics

Speaker: GS. Pierre Darriulat, Department of Astrophysics of the Vietnam National Satellite Centre, VAST

Colloquium Lecture

The equilibrium problem: a unified approach to optimization, minimax problems (game theory), variational inequalities and other interesting problems.

Speaker: Prof. Gabor Kassay, Faculty of Mathematics and Computer Science Babes-Bolyai University, Romania

Colloquium Lecture

Homotopy invariants of manifolds: from H.Poincaré to nowadays

Speaker: Prof. A.S.Mishchenko, Lomonosov Moscow State University

### Highlights

18/08/18, Conference: Đại hội Toán học Việt Nam lần thứ 9 |

10/09/18, Conference: The 10th Japan-Vietnam Joint Seminar on Commutative Algebra |

15/09/18, Conference: The 6th Franco-Japanese-Vietnamese Symposium on Singularities |

17/10/18, Conference: The Winter School on Algebraic Geometry |

22/10/18, Conference: The Third Mongolia-Russia-Vietnam Workshop on Numerical Solution of Integral and Differential Equations (NSIDE 2018) |

23/10/18, Conference: ALGEBRAIC GEOMETRY IN EAST ASIA |

03/12/18, Conference: Arithmetic Geometry and de Rham Theory |

### New Scientiffic Publications

- Nguyen Dinh Cong, Doan Thai Son, Hoang The Tuan, Asymptotic stability of linear fractional systems with constant coefficients and small time dependent perturbations. Vietnam Journal of Mathematics. 46(2018), pp 665–680.
- Phung Ho Hai, João Pedro P. dos Santos, The action of the etale fundamental group scheme on the connected component of the essentially finite one, Mathematische Nachrichten, 291 (2018),1733–1742.
- Nguyen Thu Hang, Tran Nam Trung, Regularity of powers of cover ideals of unimodular hypergraphs, Journal of Algebra, 513 (2018), 159-176.