Preprints

Due secondini fanno un quartino, quattro secondini fanno un mezzo litro [Il turco napoletano]
Se non sapete fare il calzolaio, fate il farmacista. Calzolai si nasce, non si diventa [San Giovanni decollato]

These are older works still of potential interest, that do not fit right into the other sections.

Preprints: Older Works

Differential Riccati Equations

Positive Definiteness in the Numerical Solution of Riccati Differential Equations [With T. Eirola. In Numerische Mathematik 67 (1994), pp. 303-313.]
Preserving Monotonicity in the Numerical Solution of Riccati Differential Equations [With T. Eirola. In Numerische Mathematik 74 (1996), pp. 35-47.]

Linear Algebra: Functions of Matrices

Considerations on Computing Real Logarithms of Matrices, Hamiltonian Logarithms and Skew-Symmetric Logarithms [In Linear Algebra & Its Applications 244 (1996), pp. 35-54.]
Computational Techniques for Real Logarithms of Matrices [With B. Morini, A. Papini. In SIAM J. Matrix Analysis & Applications 17 (1996), pp. 570-593.]
Real Hamiltonian logarithm of symplectic matrix [In Linear Algebra & Its Applications 281 (1998), pp. 227-246.]
Computational Techniques for On logarithms of nearby matrices and structured matrix interpolation [With B. Morini, A. Papini, A. Pasquali. In Applied Numerical Mathematics 29 (1999), pp. 145-165.]
Conditioning and Pade' approximation of the logarithm of a matrix [With A. Papini. In SIAM J. Matrix Analysis & Applications 21-3 (2000), pp. 913-930.]
Pad\'e approximation for the exponential of a block triangular matrix [With A. Papini. In Linear Algebra & Its Applications 308 (2000), pp. 183-202.]
Conditioning of the exponential of a block triangular matrix [With A. Papini. In Numerical Algorithms 28 (2002), pp. 137--150.]