Volatility of the financial time series belongs to the crucial estimated parameters in finance (e.g. in risk management …, derivative pricing). It is well known, that volatility varies in time, so that new approaches of volatility modeling have … analysis (R/S) indicate a long memory in the volatility process of PX index and the first 40 autocorrelations of the square log …

theory is considered alongside the theory of the monetary approach. The author creates his own regression import and export …