'The First Mathday Workshop in Mathematical Sciences' was successfully held on March 8, 2018. The workshop programmes involved a range of exciting mathematical topics presented by five international and local mathematicians. Interested reserchers and students from across the university attended the whole day sessions. The aims of this workshop were: to promote mathematics and statistics at UNNC and to give early career mathematicians/statisticians and students the opportunity to network and discuss ideas with prominent invited speakers. 

Chairwoman

Dr. Chong You

Agenda

Speakers

Prof. Charles Newman

Courant Institute of Mathematical Sciences, NYU, USA and NYU-Shanghai, China

Topic: The Riemann Hypothesis is a conjecture formulated in 1859 by Bernhard Riemann about the location of the (nontrivial) zeros in the complex plane of Riemann's zeta function; the conjecture is that these zeros all lie on the vertical line with real part of the complex variable equal exactly to 1/2. It is often regarded as the most famous open problem in mathematics.

Biography:Charles Newman is a Silver Professor of Mathematics at the Courant Institute of Mathematical Sciences at New York University and an Affiliated Professor of Mathematics at NYU Shanghai. He holds an M.A. and a Ph.D. from Princeton University, and two B.S. degrees from MIT. Professor Newman is a Fellow of the American Mathematical Society, a Fellow of the Institute of Mathematical Statistics, a member of the International Association of Mathematical Physicists, a member of the US National Academy of Sciences, a member of the American Academy of Arts and Sciences, and a member of the Brazilian Academy of Sciences. His most recent book is Spin Glasses and Complexity (Daniel L. Stein & Charles M. Newman ) published by Princeton University Press in 2013.

Dr. Behrouz Emamizadeh

University of Nottingham Ningbo China

Title: Shape optimization problems, a non-gamma convergence approach

Abstract: In this talk I will introduce a class of shape optimization problems which are related to a linear partial differential equation and show the typical gamma convergence approach is not applicable to prove existence of optimal solutions. Instead, using two simple devices; namely, the maximum principle and Bathtub Theorem we are able to prove existence of optimal solutions and derive the optimality conditions they satisfy. I will end the talk with a more general shape optimization problem where these two devices will no longer be useful. For such cases I recommend using the very well developed theory of rearrangements that in recent years has proved to be a powerful tool in many optimization problems.

Biography: Behrouz Emamizadeh joined the The University of Nottingham Ningbo China (UNNC) in August, 2013. Before that he was an associate professor at Xi'an Jiaotong-Liverpool University, where he held the post of the Director of the Applied Mathematics Programme. Prior to that, Behrouz Emamizadeh worked for six years for an oil company in the Middle East, after concluding 16 years tenure at the Iran University of Science and Technology, Tehran, Iran. Hir research area is nonlinear partial differential equations associated with physical phenomena arising in solid and fluid mechanics, economics and biology. The type of questions that he addresses range a wide spectrum starting from the existence and uniqueness of solutions to more modern questions pertaining to the symmetry and regularity of the solutions. Recently, in collaboration with Dr Amin Farjudian, they have been able to produce numerical results confirming our theoretical outputs.

Prof. Henrik Shahgholian

The Royal Institute of Technology, Sweden

Title: Corners and multi-junctions in FB problems

Abstract: Professor Henrik’s talk was about his recent work on discussing the behaviour of free boundary in two perspectives: close to corner points of fixed boundaries and formation of multi-junction points.

Dr. Richard Rankin

University of Nottingham Ningbo China

Title: Bounds for the error in finite element approximations

Abstract: The finite element method can be used to obtain approximate solutions to partial differential equations. In order to use the finite element method, the domain on which the partial differential equation is posed is partitioned into a mesh. It is important to know if a finite element approximation obtained on a particular mesh is sufficiently accurate or not, in which case a more accurate approximation can be obtained by refining the mesh. I will discuss how bounds for the error in finite element approximations can be obtained.

Biography: Richard Rankin joined the University of Nottingham Ningbo China as an Assistant Professor in the School of Mathematical Sciences in September 2017 after working at Universidad Técnica Federico Santa María (Valparaíso, Chile), Rice University (Houston, USA) and the University of Strathclyde (Glasgow, UK). His research area is finite element methods for obtaining approximate solutions to partial differential equations with a focus on obtaining error bounds and estimates for such methods.

Prof. Zhan Shi

Paris VI, France

Biography：Zhan Shi is a professor of mathematics at Université Paris VI, France. His research interests include spatial branching processes and random walks.

Topic：The Derrida-retaux conjecture