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Advances in Mathematical Physics
Volume 2013 (2013), Article ID 175232, 5 pages
Research Article

An Equilibrium Model of Interbank Networks Based on Variational Inequalities

School of Economics and Management, Southeast University, Nanjing, Jiangsu 211189, China

Received 14 March 2013; Revised 15 October 2013; Accepted 16 October 2013

Academic Editor: Shao-Ming Fei

Copyright © 2013 Shouwei Li and Jianmin He. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We develop an equilibrium model of credit network and trust network in the interbank market. We consider two kinds of decision makers including banks with liquidity surplus and banks with liquidity shortage. We model the behavior of the decision makers, derive the equilibrium conditions, and establish the variational inequality formulation for interbank credit network and trust network. We then utilize the variational inequality formulation to obtain qualitative properties of the equilibrium pattern in terms of existence and uniqueness.