Abstract: The theme of this paper is the construction of finite difference approximations to the first derivative in the presence of Dirichlet boundary conditions. Stable implementation of ...

Abstract: This chapter deals with skew Hadamard, amicable, and symmetric matrices. Amicable orthogonal designs have flowered from the concept of amicable Hadamard matrices. The chapter examines skew ...

This is a preview. Log in through your library . Journal Information The Mathematical Gazette is the original journal of the Mathematical Association and it is now over a century old. Its readership ...

This is a preview. Log in through your library . Abstract Let $A$ be a nonsingular matrix with positive inverse and $B$ a nonnegative matrix. Let the inverse of $A ...