An algorithm for computing matrix functions is presented. It employs a Schur decomposition with reordering and blocking followed by the block form of a recurrence of Parlett, with functions of theâ€¦ (More)

Correlation matricesâ€”symmetric positive semidefinite matrices with unit diagonalâ€” are important in statistics and in numerical linear algebra. For simulation and testing it is desirable to be able toâ€¦ (More)

The synthesis and in vitro evaluation of the acetamidine derivatives of hetero-substituted lysine and homolysine analogues have identified potent inhibitors of human nitric oxide synthase enzymes,â€¦ (More)

The aim of this study was to compare the efficacy and safety in children of salmeterol (50 microg twice daily) plus fluticasone propionate (100 microg twice daily) when delivered together via aâ€¦ (More)

For matrix functions f we investigate how to compute a matrix-vector product f(A)b without explicitly computing f(A). A general method is described that applies quadrature to the matrix version ofâ€¦ (More)

A standard method for solving the symmetric definite generalized eigenvalue problem Ax = Î»Bx, where A is symmetric and B is symmetric positive definite, is to compute a Cholesky factorization B = LLTâ€¦ (More)

STRUCTURED CONDITIONING OF MATRIX FUNCTIONSâˆ— PHILIP I. DAVIESâ€ Abstract. The existing theory of conditioning for matrix functions f(X):CnÃ—n â†’ CnÃ—n does not cater for structure in the matrix X. Anâ€¦ (More)

A 24-year-old man was referred with involuntary stereotypies of movement and thinking, of which he seemed unaware. On admission, comprehensive physical screening proved negative except for loweredâ€¦ (More)