The problem of local linear approximation to a curved boundary using gridded data is closely connected to both curve estimation methods in statistics and rational approximation in number theory. The ...

Convergence theorems are proved for time-dependent delays and state-dependent delays within two classes, which say essentially that fitting the data by using approximations will, in the limit, provide ...

Nonlinear estimation algorithms are required for obtaining estimates of the parameters of a regression model with innovations having an ARMA structure. The three estimation methods employed by the ...