This paper introduces heterogeneity of cross-technologies interactions into the double-differentiated R&D-based endogenous growth model. In this model new technologies appear continuously and older are outdated generating structural change. All technologies may interact with each other through...

This paper introduces heterogeneity of cross-technologies interactions into the double-differentiated R&D-based endogenous growth model. In this model new technologies appear continuously and older are outdated generating structural change. All technologies may interact with each other through...

The article develops a systematic method of calculation of an approximate price for a wide range of securities with the help of instruments of spectral analysis, singular and regular wave theory. Price of options depend on stochastic volatility, which depends on a method. Finding the price is...