• 摘要

《北京数学杂志（英文）》（Peking Mathematical Journal）是由教育部主管、北京大学主办的英文数学期刊，于2018年9月正式创刊。期刊由北京国际数学研究中心和北京大学数学科学学院联合承办，主要刊登基础数学方面具有突出思想方法的高水平原创研究成果，旨在促进国内外学术交流，推动数学学科发展。

《北京数学杂志（英文）》由安金鹏、郭岩、刘若川、刘小博、田刚和许晨阳担任联合主编，由Noga Alon，Pierre Colmez，Hélène Esnault，Christopher Hacon，Alexandru Ionescu，Svetlana Jitomirskaya，Nader Masmoudi，Aaron Naber，Kaoru Ono，Rahul Pandharipande和张伟担任副主编。

《北京数学杂志（英文）》创刊三周年以来，获得了学术界的广泛关注与支持，已出版4卷10期，另有多篇文章在线出版。多位著名数学家（包括菲尔兹奖获得者Michael Freedman，国际数学家大会一小时报告人、美国科学院院士János Kollár，国际数学家大会一小时报告人Rahul Pandharipande，美国科学院院士、科学突破奖获得者Christopher Hacon等）的论文已在期刊正式发表。目前期刊已被MathSciNet、zbMATH等国际主要数学数据库收录。在2021年中国数学会发布的“数学领域高质量科技期刊分级目录”中，《北京数学杂志（英文）》入选数学类T1区。

期刊主页：https://www.springer.com/journal/42543

投稿入口：https://www.editorialmanager.com/pkmj/default.aspx

• 摘要

11月13-14日，“2021中韩离散数学、统计与优化青年学者论坛”在南开大学范孙楼召开。本次论坛由中国科协资助，天津市科协与天津市工业与应用数学学会联合举办，论坛采用线上与线下相结合的方式，包含开幕式、大会报告和邀请报告等环节。

国家百千万人才工程、国家杰出青年科学基金获得者、教育部“长江学者”特聘教授、云南大学唐年胜教授，中国科学院大学数学科学学院执行院长郭田徳教授，北京交通大学冯衍全教授等专家学者出席论坛并作大会报告。天津市科学技术学会学术部刘元刚部长，中国工业与应用数学学会副理事长、天津市工业与应用数学学会理事长、南开大学统计与数据科学学院执行院长王兆军教授，韩国纽约州立大学Suil O博士等来自中韩双方的离散数学、统计与优化领域的专家学者和学生共130余人参会。

开幕式上，论坛组织委员会主席、天津市科学技术学会学术部刘元刚部长，论坛程序委员会主席、中国工业与应用数学学会副理事长、天津市工业与应用数学学会理事长王兆军教授先后致欢迎辞。他们在欢迎辞中对来自中韩两国的与会专家学者表示热烈欢迎，希望中韩双方学者以此次论坛为契机，加深合作与交流。论坛韩方主席、韩国纽约州立大学Suil O博士在致辞中，感谢了刘元刚部长、王兆军教授、天津市科协和天津市工业与应用数学学会为此次论坛的召开所付出的努力，并回顾了自2016年至今与中国学者的合作交流。

11月13日，唐年胜教授、郭田德教授、冯衍全教授分别作了题为《Quantile correlation-based variable selection》、《Machine learning method for combinatorial optimization》、《Some topics in group and graph》的大会报告；随后，按照“统计”、“优化”、“图论组合”3个主题开展线上分组交流研讨，16位中方青年学者作邀请报告。11月14日，另有5位韩方专家作大会报告，6位韩方青年学者作邀请报告。与会人员讨论热烈，交流充分。

此次会议通过邀请中韩高水平青年专家学者作学术报告，为与会专家和学生提供了学术交流的机会，本次中韩离散数学、统计与优化青年学者论坛的成功举办也将进一步推动中韩两国青年学者在离散数学、统计与优化领域，乃至整个数学与应用数学领域的交流与合作。

天津市工业与应用数学学会供稿

• 摘要

简介：第四届金砖五国数学家大会将于2021年12月7-10日举行，会议由CMS联合发起，欢迎您参加会议。

网址：https://conference.iisertvm.ac.in/bricsmathconf/index.php

Plenary speakers

INDIA
Arup Bose (Indian Statistical Institute, Kolkata.)
Meena Mahajan (The Institute of Mathematical Sciences, Chennai)
Rajendra Bhatia (Ashoka University)

BRAZIL
Luna Lomonaco (University of São Paulo)
Hedibert Lopes (Insper-Institute of Education and Research)
Paulo José da Silva e Silva (University of Campinas)

RUSSIA
A. V. Arutyunov (Moscow State University)
A. I. Bufetov (The Steklov Institute of Mathematics)
A. E. Mironov (Sobolev Institute of Mathematics)

CHINA
Jun Li (Shanghai Center for Mathematical Sciences)
Xiaoyun Wang (Tsinghua University)
Ya-Xiang Yuan (Academy of Mathematics and Systems Science, Chinese Academy of Sciences)

SOUTH AFRICA
Zurab Janelidze, Amartya Goswami (University of Johannesburg)
Inger Fabris Rotelli (The University of Pretoria)
Bruce Watson (University of the Witwatersrand)

Invited speakers

Probability and Statistics
Prof. Manjunath Krishnapur (Indian Institute of Science Bangalore)
Prof. Siva Athreya (Indian Statistical Institute Bangalore)
Prof. Parthanil Roy (Indian Statistical Institute Bangalore)
Prof. Riddhipratim Basu (International Centre for Theoretical Sciences Bangalore)

Pure Mathematics
Prof. Sanoli Gun (Institute of Mathematical Sciences, Number Theory:)
Prof. Amalendu Krishna (IISc Bangalore)
Prof. Neena Gupta (Indian Statistical Institute Kolkata, Comm algebra)
Prof. Apoorva Khare (Indian Institute of Science - Analysis)
Prof. Dipendra Prasad (Indian Institute of Technology Bombay, Representation/Number Theory)
Prof. Parameshwaran Sankaran (Institute of Mathematical Sciences, Geometry/Topology)
Prof. Srikanth Srinivasan (Indian Institute of Technology Bombay, TCS)

Applied Mathematics
Prof. A. K. Pani (Indian Institute of Technology Bombay, Numerical Analysis)
Prof. K. Sreenadh (Indian Institute of Technology Delhi, PDE)
Prof. Amit Apte (International Centre for Theoretical Sciences Bangalore, Data Assimilation/Nonlinear dynamics)
Prof. Venky Krishnan (TIFR Centre for Applicable Mathematics-Inverse Problems)

Public Lecture
Prof. Rajeeva Karandikar (Chennai Mathematical Institute)
Prof. M. S. Raghunathan (Centre for Basic Sciences)

• 摘要

The year of 2021 marks the 60th anniversary of the Faculty of Science of Hong Kong Baptist University (HKBU). To commemorate this special and historical occasion, the MATH department at HKBU is organizing a three-day virtual conference as a celebratory event-"HKBU Mathematics Conference for Faculty of Science 60th Anniversary", held over 7-9 December, 2021. The topics will mainly focus on but not limited to the mathematical aspects of data science, statistics, scientific computing, and optimization.

Confirmed speakers: Andrea Bertozzi (UCLA); Xiaojun Chen (PolyU, Hong Kong); Aurore Delaigle (University of Melbourne); Weinan E (Princeton); Piotr Fryzlewicz (London School of Economics); Ingrid Van Keilegom (Katholieke Universiteit Leuven); Tim Kelley (North Carolina State University); Regina Liu (Rutgers); Richard Samworth (Cambridge); Zuowei Shen (National University of Singapore); Defeng Sun (PolyU, Hong Kong); Kim-Chuan Toh (National University of Singapore); Hongyu Zhao (Yale School of Public Health).

For more details about the conference, please visit https://sites.google.com/hkbu.edu.hk/hkb
u-math-science-faculty-60th/home

The workshop will be held in virtual format via Zoom. The registration is free of charge, and the deadline is Dec 6, 2021. For registration, please fill in the form via https://forms.gle/oJJKp
NWAY5ryxZfk6

• 摘要

We are pleased to announce that the 17th Copper Mountain Conference on Iterative Methods. This will be a *virtual* conference with the important dates for participation outlined below.

17th Copper Mountain Conference on Iterative Methods (Virtual) Monday April 4- Friday April 8, 2022 Daily schedule: 15:00-19:00 UTC (8am-12pm PDT, 11am-3pm EDT, 17:00-21:00 CEST)

The Copper Mountain Conference on Iterative Methods was founded in 1990 and is held every two years (even years). It is widely regarded as one of the premier international conferences on iterative methods. The 2022 meeting will be a virtual one with details to follow soon. The main purpose of this initial announcement is to bring attention to the student paper competition (a tradition at the meeting with a cash award) and some important deadlines.

For more information, see our website at https://grandmaster.colorado.edu/copper/2022/

Updates will be provided on the web site and in follow-up announcements in the coming weeks. Don't forget to mark your calendars!

Important Deadlines:
Student Paper Competition:
- Abstract: Monday January 10, 2022
- Paper (reserved for students who submit an abstract): Monday January 17, 2022
Presentation Abstracts: Monday, February 7, 2022
Early Registration Deadline: Monday March 7, 2022
Journal Special Section: tentatively June 30, 2022

• 摘要

Competitive Equilibria and Benefit Distributions of Population Production Economies with External Increasing Returns
Zhe Yang, Xian Zhang
J. Oper. Res. Soc. China 9 (4), 723-740 (2021)
https://doi.org/10.1007/s40305-021-00340-1

Coopetition Between TTA and OTA Based on Multinomial Logit Choice Model
Hui-Li Yan, Hao Xiong
J. Oper. Res. Soc. China 9 (4), 741–756 (2021)
https://doi.org/10.1007/s40305-021-00343-y

Modelling Economic Order Quantities, Considering Buy and Repair Options for Defective Items, and Allowing for Shortages and Inspection Errors
Harun Öztürk
J. Oper. Res. Soc. China 9 (4), 757 - 795 (2021)
https://doi.org/10.1007/s40305-021-00339-8

A Levenberg–Marquardt Method for Solving the Tensor Split Feasibility Problem
Yu-Xuan Jin, Jin-Ling Zhao
J. Oper. Res. Soc. China 9 (4), 797 - 817 (2021)
https://doi.org/10.1007/s40305-020-00337-2

Disruption Recovery at Airports: Ground Holding, Curfew Restrictions and an Approximation Algorithm
Prabhu Manyem
J. Oper. Res. Soc. China 9 (4), 819 - 852 (2021)
https://doi.org/10.1007/s40305-020-00338-1

Optimized Filling of a Given Cuboid with Spherical Powders for Additive Manufacturing
Zoya Duriagina, Igor Lemishka, Igor Litvinchev, Jose Antonio Marmolejo, Alexander Pankratov, Tatiana Romanova ,Georgy Yaskov
J. Oper. Res. Soc. China 9, 853–868 (2021).
https://doi.org/10.1007/s40305-020-00314-9

A General Jury Theorem on Group Decision Making
Yu-Da Hu
J. Oper. Res. Soc. China 9, 869–881 (2021). https://doi.org/10.1007/s40305-020-00330-9

Approximation Algorithms on k-Cycle Transversal and k-Clique Transversal
Zhong-Zheng Tang, Zhuo Diao
J. Oper. Res. Soc. China 9, 883–892 (2021). https://doi.org/10.1007/s40305-020-00335-4

Nonuniqueness of Solutions of a Class of ?0-minimization Problems
Jia-Liang Xu
J. Oper. Res. Soc. China 9, 893–908 (2021). https://doi.org/10.1007/s40305-020-00336-3

Unbounded Serial-Batching Scheduling on Hierarchical Optimization
Cheng He, Hao Lin, Li Li
J. Oper. Res. Soc. China 9, 909–914 (2021). https://doi.org/10.1007/s40305-020-00334-5

• 摘要

Well-posedness results and blow-up for a semi-linear time fractional diffusion equation with variable coefficients
Vo Van Au, Jagdev Singh and Anh Tuan Nguyen

A stabilizer free WG method for the Stokes equations with order two superconvergence on polytopal mesh
Xiu Ye and Shangyou Zhang

A simple virtual element-based flux recovery on quadtree
Shuhao Cao

On blowup of secant varieties of curves
Lawrence Ein, Wenbo Niu and Jinhyung Park

Regularity of Wong-Zakai approximation for non-autonomous stochastic quasi-linear parabolic equation on RN
Guifen Liu and Wenqiang Zhao

Semilinear pseudo-parabolic equations on manifolds with conical singularities
Yitian Wang, Xiaoping Liu and Yuxuan Chen

Multidimensional stability of pyramidal traveling fronts in degenerate Fisher-KPP monostable and combustion equations
Denghui Wu and Zhen-Hui Bu

Constructions of three kinds of Bihom-superalgebras
Ying Hou and Liangyun Chen

Uniqueness and nondegeneracy of positive solutions to an elliptic system in ecology
Zaizheng Li and Zhitao Zhang

Weighted fourth order elliptic problems in the unit ball
Zongming Guo and Fangshu Wan

Recent progress on stable and finite Morse index solutions of semilinear elliptic equations
Kelei Wang

On mathematical analysis of complex fluids in active hydrodynamics
Yazhou Chen, Dehua Wang and Rongfang Zhang

Initial boundary value problem of a class of mixed pseudo-parabolic Kirchhoff equations
Yang Cao and Qiuting Zhao

A computable formula for the class number of the imaginary quadratic field $Q(−p—−√)$, $p=4n−1$
Jorge Garcia Villeda

A class of fourth-order hyperbolic equations with strongly damped and nonlinear logarithmic terms
Yi Cheng and Ying Chu

Optimal time-decay rates of the compressible Navier–Stokes–Poisson system in $R^3$
Guochun Wu, Han Wang and Yinghui Zhang

The algebraic classification of nilpotent commutative algebras
Doston Jumaniyozov, Ivan Kaygorodov and Abror Khudoyberdiyev

Variations on Lyapunov's stability criterion and periodic prey-predator systems
Rafael Ortega

Local well-posedness of solutions to the boundary layer equations for compressible two-fluid flow
Long Fan, Cheng-Jie Liu and Lizhi Ruan

Stabilizing effect of elasticity on the motion of viscoelastic/elastic fluids
Fei Jiang

Nonexistence of entire positive solutions for conformal Hessian quotient inequalities
Feida Jiang, Xi Chen and Juhua Shi

Non-global solution for visco-elastic dynamical system with nonlinear source term in control problem
Xiaoqiang Dai and Wenke Li

Some estimates of virtual element methods for fourth order problems
Qingguang Guan

Accelerating reinforcement learning with a Directional-Gaussian-Smoothing evolution strategy
Jiaxin Zhang, Hoang Tran and Guannan Zhang

Pullback dynamics of a 3D modified Navier-Stokes equations with double delays
Pan Zhang, Lan Huang, Rui Lu and Xin-Guang Yang

Global dynamics of some system of second-order difference equations
Tran Hong Thai, Nguyen Anh Dai and Pham Tuan Anh

On the existence of solutions for the Frenkel-Kontorova models on quasi-crystals
Jianxing Du and Xifeng Su

Path-connectedness in global bifurcation theory
J. F. Toland

On the number of critical points of solutions of semilinear elliptic equations
Massimo Grossi

Planar vortices in a bounded domain with a hole
Shusen Yan and Weilin Yu

Well-posedness in Sobolev spaces of the two-dimensional MHD boundary layer equations without viscosity
Wei-Xi Li and Rui Xu

Congruences for sixth order mock theta functions $λ(q)$ and $ρ(q)$
Harman Kaur and Meenakshi Rana

Optimal control for the coupled chemotaxis-fluid models in two space dimensions
Yunfei Yuan and Changchun Liu

Global dynamics in a competitive two-species and two-stimuli chemotaxis system with chemical signalling loop
Rong Zhang and Liangchen Wang

Canonical maps of general hypersurfaces in Abelian varieties
Fabrizio Catanese and Luca Cesarano

Yamabe systems and optimal partitions on manifolds with symmetries
Mónica Clapp and Angela Pistoia

• 摘要

A blow–up result for the semilinear Moore–Gibson–Thompson equation with nonlinearity of derivative type in the conservative case
Wenhui Chen and Alessandro Palmieri

Solvability in abstract evolution equations with countable time delays in Banach spaces: Global Lipschitz perturbation
Tomomi Yokota and Kentarou Yoshii

Deterministic control of stochastic reaction-diffusion equations
Wilhelm Stannat and Lukas Wessels

Lifespan of solutions to a parabolic type Kirchhoff equation with time-dependent nonlinearity
Haixia Li

$S$-asymptotically $ω$-periodic mild solutions and stability analysis of Hilfer fractional evolution equations
Pallavi Bedi, Anoop Kumar, Thabet Abdeljawad and Aziz Khan

Approximate controllability of network systems
Yassine El Gantouh, Said Hadd and Abdelaziz Rhandi

Uniform stability in a vectorial full Von Kármán thermoelastic system with solenoidal dissipation and free boundary conditions
Catherine Lebiedzik

Hadamard well-posedness for a structure acoustic model with a supercritical source and damping terms
Andrew R. Becklin and Mohammad A. Rammaha

Lipschitz stability for an inverse source problem in anisotropic parabolic equations with dynamic boundary conditions
El Mustapha Ait Ben Hassi, Salah-Eddine Chorfi, Lahcen Maniar and Omar Oukdach

Stabilization of higher order Schrödinger equations on a finite interval: Part I
Ahmet Batal, Türker Özsarı and Kemal Cem Yılmaz

Controllability of neutral stochastic functional integro-differential equations driven by fractional brownian motion with Hurst parameter lesser than 1/2
Brahim Boufoussi and Soufiane Mouchtabih

Optimal distributed control of the three dimensional primitive equations of large-scale ocean and atmosphere dynamics
Bo You

Well-posedness of linear first order port-Hamiltonian Systems on multidimensional spatial domains
Nathanael Skrepek

Stability and stabilization for the three-dimensional Navier-Stokes-Voigt equations with unbounded variable delay
Vu Manh Toi

• 摘要

Computing Reeb dynamics on four-dimensional convex polytopes
Julian Chaidez and Michael Hutchings

Tracking the critical points of curves evolving under planar curvature flows
Eszter Fehér, Gábor Domokos and Bernd Krauskopf

Classification with Runge-Kutta networks and feature space augmentation
Elisa Giesecke and Axel Kröner