A sequence of least squares problems of the form miny kG 1=2 (A T y ? h)k2 where G is an n n positive deenite diagonal weight matrix, and A an m n (m < n) sparse matrix with some dense columns; has many applications in linear programming, electrical networks, elliptic boundary value problems, and structural analysis. We discuss a technique for forming low-rank correction pre-conditioners for su...

Dietary fibers are often under-consumed worldwide, even though their health benefits already established in dietary guidelines, which recommend daily intake of 25–30 g. Increasing the supply fiber-enriched food products is a way to improve consumers’ intake. This study proposes development mixed sucrose/erythritol/fiber matrix, particulate as crystalline solid aggregate by co-crystallization pr...