The most common approach for default dependence modelling is at present copula functions. Within this framework, the paper examines factor copulas, which are the industry standard, together with their latest development, namely the incorporation of sudden jumps to default instead of a pure...

This book presents the history of economic thought as it relates to today’s most pressing problems, and it emphasizes the critical connection that exists between what may seem cold, unrealistic mathematical economic models, and the quality of everyday life of any citizen of the planet earth....

After the criterion of time to examine the evolution of the indicator values that can be given at the time (eg number of human population in year t) or the time (eg GDP in year t). The indicators characterizing economic development are absolute growth, growth rate, the rate increase.

Economic information, such as interpersonal relationships, and lead are usually placed at the basis of the facts and circumstances must always be based on a economic theory well argued. Relations between employees and managers should provide related information in terms of social issues,...

The economic, social, demographic, technological achievements, uneven distribution of raw materials, energy resources, require the opening of all economic systems. Mathematical models, came to help the arguments in this case, I propose a way to "experience" what the real situation is impossible....

The importance of the working document is that it allows the analysis of the information and the status of cases associated with (SARS-CoV-2) COVID-19 as open data at the municipal, state and national level, with a daily record of patients, according to a age, sex, comorbidities, for the...

Nowadays, news feeds provide Web users with access to an unlimited amount of news items, however only a subset of them is relevant. Therefore, users should be able to select the most relevant concepts, about which they want to retrieve news. Although keyword search engines provide users with the...

The Szpilrajn "constructive type" theorem on extending binary relations, or its generalizations by Dushnik and Miller [10], is one of the best known theorems in social sciences and mathematical economics. Arrow [1], Fishburn [11], Suzumura [22], Donaldson and Weymark [8] and others utilize...

This paper presents an axiomatization of residual income, aka excess profit, and illustrates how it may univocally engenders fixed-income or variable-income assets. In the first part it is shown that, depending on the relations between excess profit and the investor's excess wealth, a...