TY - RPRT AU - Bujosa Brun, Marcos AU - Bujosa Brun, Andrés AU - García Ferrer, Antonio PY - 2013 UR - https://hdl.handle.net/20.500.14352/41468 AB - Although spectral analysis of stationary stochastic processes has solid mathematical foundations, this is not always so for some non-stationary cases. Here, we establish a rigorous mathematical extension of the classic Fourier spectrum to the case in... LA - eng A3 - Facultad de CC Económicas y Empresariales. Instituto Complutense de Análisis Económico (ICAE) KW - Spectral analysis KW - time series KW - non-stationarity KW - frequency domain KW - pseudo-covariance function KW - linear stochastic difference equations KW - Rigged Hilbert space KW - partial inner product KW - Extended Fourier Transform. TI - Mathematical framework for pseudo-spectra of linear stochastic difference equations TY - technical report VL - 2013 ER -