In this paper the issue of mathematical programming and optimization has being revisited. The theory of optimization deals with the development of models and methods that determine optimal solutions to mathematical problems defined. Mathematical model must be some function of any solution that...

This paper demonstrates the existence of a finite set of equilibria in the case of the indeterminacy of linear rational expectations models. The number of equilibria corresponds to the number of ways to select n eigenvectors among a larger set of eigenvectors related to stable eigenvalues. A...

A decent budgetary portfolio is nothing more, and nothing less, than an accumulation of advantages that develop in quality and produce abundance money for the financial specialist to spend or reinvest. Markowitz (1959) is one of the pioneers of present day portfolio hypothesis. Generally, the...

In der einfachen finanzmathematischen Welt herrscht ein konstanter Zinssatz. Wird die Modellwelt hinsichtlich einer nicht flachen Zinsstruktur abgeändert, so sollten die Barwertfaktoren um zwischenzeitliche Zinszahlungen (Zinseszinsen) neutralisiert werden. Die Berechnung der Barwertfaktoren...

This paper aims to elucidate the connectedness between major forex currencies and cryptocurrencies using the quantile cross-spectral approach recently proposed by Baruník and Kley (2015). The sample covers six forex currencies and six cryptocurrencies over the period of 1 September 2015 to 29...

The two-dimensional value chain model has served business theorists for decades. Yet, we know that integrated companies in emerging markets combine many dimensions of service and product to generate customer value. What does CP All teach us about the new "value web" concept? Using a simple...

Over 70 academic papers attempt to explain why foreigners invest in US securities. All ignore the vital role of the US broker-dealer. Macroeconomic factors like a trade balance or corporate governance may guide foreign investors toward certain markets. But US broker-dealers provide information...

This paper attempts to examine the dependence structure of four major cryptocurrencies chosen by current market capitalisation. It is a well known fact that there is huge volatility in the prices of these cryptocurrencies. The Vine Copula model is used to get some insights about the dependence...