Let A be a finite set of integers. The sum set, A+A, is the setof pairwise sums from A and the product set, AA, is the set of pairwiseproducts. Erdos and Szemeredi conjectured that either the sum set or theproduct set should be large, A+A+AA is (almost) quadratic in A forany subset of integers. This problem (and some of its variants) became oneo...
Creator:
Solymosi, Jozsef (University of British Columbia)
Created:
2014-10-02
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Our understanding of the working brain is partly based on observations through the "windows of the brain", electric (EEG/MEG), metabolic (PET), or hemodynamic (fMRI,OT). To shed light on the intricacies of the neurovascular coupling, and in order to model phenomena such as CSD, it is important to work towards an integrated model of the three key...
Creator:
Somersalo, Erkki (Case Western Reserve University)
Created:
2018-02-16
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
When observed data are used to infer on parameters that are not directly observable, usually an inverse problem needs to be solved. Characteristic for inverse problems is their ill-posedness, which in practice means that small errors in data may propagate to huge inconsistencies in the solution if the problem is not properly regularized or augme...
Creator:
Somersalo, Erkki (Case Western Reserve University)
Created:
2017-09-06
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Marlene Somers is a white MTF trannssexual person from South Minneapolis. At the time of this interview, Somers was retired. In this oral history, Somers speaks at length about living two lives at once, Christine Jorgensen, Caitlyn Jenner, and her family relationships. She also touches upon encounters with healthcare, Ray Blanchard's theory of a...
Creator:
Somers, Marlene
Contributor:
Jenkins, Andrea (Interviewer)
Created:
2015-09-23
Contributed By:
University of Minnesota Libraries, Jean-Nickolaus Tretter Collection in Gay, Lesbian, Bisexual and Transgender Studies.
Identification of subgroups in a biomedical study with subjects sampled from a heterogeneous population has attracted considerable attention in recent years. Technically, subgroup group analysis may be formulated as a type of supervised clustering analysis with group labels being latent. The method of finite mixture model is the most widely used...
Creator:
Song, Peter (University of Michigan)
Created:
2018-11-08
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Formally, exit problem with an alpha-stable process is associated with an elliptic PDE with Dirichlet boundary and fractional Laplacian operator. We will investigate sufficient conditions of the exit problem value to be the strong, respectively generalized viscosity solution of its associated Dirichlet problem. Solvability of parabolic PDE can a...
Creator:
Song, Qingshuo (City University of Hong Kong)
Created:
2018-06-12
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Karin shares the story of her maternal great-grandmother, Karin Svenson Berg, who emigrated from Sweden 1902 for marriage. Her journey brought her to Mora, Minnesota and many of the items she brought with her have been passed down for generations, along with her life story.
Creator:
Sonneman, Karin; Katie van Eijl, Katie
Created:
2018-05-09
Contributed By:
University of Minnesota, Immigration History Research Center