An angle metric through the notion of Grassmann representative.
Discretizing LTI descriptor (Regular) differential input systems with consistent initial conditions.
Optimal premium pricing for a heterogeneous portfolio of insurance risks.
The Drazin inverse through the matrix pencil approach and its application to the study of generalized linear systems with rectangular or square coefficient matrices.
Higher-order linear matrix descriptor differential equations of Apostol-Kolodner type.
Solution properties of linear descriptor (singular) matrix differential systems of higher order with (non-) consistent initial conditions.
Dynamic reforming of a quasi pay-as-you-go social security system within a discrete stochastic multidimensional framework using optimal control methods
In many western economies, the phenomenon of ageing population implies that the large Pay-As-You-Go (PAYGO) social security system will run into several severe financial difficulties. In that direction, this paper constructs a discrete-time stochastic model for a quasi PAYGO social security system to allow the potential accumulation of a special (contingency) fund, which can oscillate so as to absorb fluctuations in the various system parameters involved. The basic difference equation is analytically...
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