# WEEKLY ACTIVITIES

New results on stability and $L_ {\infty}$-gain analysis for positive linear differential-algebraic equations with unbounded time-varying delays | ||||

| ||||

### Highlights

24/05/19, Conference: THE INTERNATIONAL SUMMER SCHOOL "COMPLEX ANALYSIS AND APPLICATIONS" |

27/05/19, Conference: Quantum Topology and Hyperbolic Geometry |

02/06/19, Conference: Workshop "Tôpô và Hình học" |

02/06/19, Conference: International conferece Complex Analysis, Partial Differential Equations and their Applications |

07/06/19, Colloquium Lecture: Algebraic structures for topological summaries of data |

22/07/19, Conference: International Graduate Summer School in Mathematics |

04/12/19, Conference: Hội nghị Đại số-Lý thuyết số-Hình học và Tô pô 2019 |

### New Scientiffic Publications

- Dang Van Hieu, Dang Xuan Son, Pham Ky Anh, Le Dung Muu, A Two-Step Extragradient-Viscosity Method for Variational Inequalities and Fixed Point Problems, Acta Mathematica Vietnamica, 44 (2019), pp 531–552, Scopus.
- Bui Trong Kien, Second-Order Optimality Conditions and Solution Stability to Optimal Control Problems Governed by Stationary Navier-Stokes Equations, Acta Mathematica Vietnamica, 44 (2019), Issue 2, pp 431–448, Scopus.
- Aldo Conca, Nguyen Dang Hop, Thanh Vu, Products of ideals of linear forms in quadric hypersurfaces. Proceedings of the American Mathematical Society, 147 (2019), 1867–1880, (SCI(-E); Scopus).