Four theorems and a financial crisis

نویسندگان

  • Bikramjit Das
  • Paul Embrechts
  • Vicky Fasen
چکیده

In this paper we give an academic assessment of the financial crisis (crises) from our point of view and discuss where quantitative risk management went wrong. We formulate four mathematical theorems/research areas which have relevance for financial crises in general where the underlying theme is model uncertainty. Related to these theorems, key issues that will be discussed are: financial alchemy on Wall street, risk aggregation and diversification, tail dependence for a portfolio of losses, and the significance of correlation bounds.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Financial Crisis Contagion and the OPEC Oil Market

The impact of the financial crisis on the OPEC oil market is important to us as an important member of OPEC and an oil-exporting country with an oil-dependent economy. This study examines four networks, pre-financial crisis, US financial crisis, European debt crisis and post-financial crisis, using the contagion index and complex network for the period 2007-1-2 to 26-8-2019. The results show th...

متن کامل

Enhancing Efficiency of Neural Network Model in Prediction of Firms Financial Crisis Using Input Space Dimension Reduction Techniques

The main focus in this study is on data pre-processing, reduction in number of inputs or input space size reduction the purpose of which is the justified generalization of data set in smaller dimensions without losing the most significant data. In case the input space is large, the most important input variables can be identified from which insignificant variables are eliminated, or a variable ...

متن کامل

Investigating the Impact of the Financial Crisis on Conservative Accounting and Transparency of Banking Information

The phenomenon of the financial crisis is not a new phenomenon around the world. The structure of an economy or a set of economies may face a financial crisis. In fact, it is deformation, dimensions, causes and roots of the financial crisis which create a state of change from this crisis. Recently, evidence has shown that the market value of firms subject to bankruptcy is significantly reduced....

متن کامل

Effect of Global Financial Crisis on International Trade in Developed and Developing Countries

The recent global crisis, as a big crash ( Baldwin and Simon , 2009), has reduced foreign demand growth affecting total countries’ exports. Given the importance of foreign trade to nations and the reality that recent crisis has affected international trade we study the effects of the global financial crisis on trade relations between countries by using Ma and Cheng (2003) approach and by appl...

متن کامل

The Impact of Shadow Banking on the Financial Stability: Evidence from G20 Countries

Shadow banking is a term that came out of the financial crisis of 2007-2009. There is a belief that shadow banking was one of the crisis reasons. Because the excessive expansion of shadow banking endangers the financial stability of countries, this paper examines the impact of shadow banking on financial stability using data from 14 countries of the G20 during 2002-2018. We divided countries in...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Int. J. Approx. Reasoning

دوره 54  شماره 

صفحات  -

تاریخ انتشار 2013