Purpose - The main purpose of this paper is to determine the discount function which better fits the individuals' preferences through the empirical analysis of the different functions used in the field of intertemporal choice. Design/methodology/approach - After an in-depth revision of the...

Purpose: This paper aims to examine the functioning and organizational structure of the historic Andalusian water courts, institutions of Islamic origin whose basic model should be considered in light of the regulation of modern Islamic banking and finance. Design/methodology/approach: The...

Sustainable development is a priority to the United Nations. Moreover, investment managers consider environmental, social and governance score as an important variable in portfolios selection. The fifth goal in the 2030 Agenda is gender equality. Besides, European countries have established...

We consider systems of companies which have financial interests in each other and develop principles by which the real interest of one company in another can be determined. The paper develops an algorithm to calculate true interests from a weighted digraph that encodes the direct and indirect...

In this paper a new approach of the Markowitz's model is presented. Indeed, using an inner product, a quantitative and explicit solution for optimal portfolio selection is given. To do this, a scalar product is defined in which allows us to calculate the composition of the optimal portfolio and...

In this paper, we propose a two-step approach for conducting statistical inference in financial networks of volatility, applied to a network of European sovereign debt markets. The static results highlight that, contrarily to the intuition, southern European bonds exhibiting most volatility...