The paper regards the classical Evans price equilibrium model in free product market aspect of regarding opportunities for expanding (modifying) given that is aimed at perfecting accuracy its mathematical formulating. As an criterion, we have chosen a summary quadratic deviation calculated indices from ones. One approaches modifying basic suggesting there linear dependence between function and ...

This paper studies price and production competition between profit-maximizing lirms that use delivered spatial prices. Firms produce an identical good and customers buy from the firm offering the least delivered price. Each firm’s transportation cost is quantity dependent and customers’ demands are price elastic. This contrasts with much of the literature on competitive spatial pricing that ass...

We present some sensitivity results for the spatial price equilibrium problem in the case of quantity formulation model and in presence of excess supply and excess demand. The equilibrium conditions that describe the above model are expressed in terms of a time dependent variational inequality. The variational inequality formulation plays a fundamental role in order to achieve the sensitivity r...

the aim of this paper is to examine and analyze the spatial distribution of population in cities of the southern coastal region of iran by using common models and techniques in the field and to study the trends of evolution in a time period of 40 years (1345-1385). models used in the study can be classified into three main groups. the first group is the primate city indexes (including jefferson...

We analyze the welfare impacts of price discrimination in a two-dimensional spatial differentiation model. Consumer information of varying qualities is available on one dimension which allows firms to price discriminate, and better information leads to more refined price discrimination. We find that as information quality improves, firms’ profits monotonically increase while consumer surplus an...

In this paper‎, ‎the impacts of premium bounds of put option contracts on the operation of put option and day-ahead electricity markets are studied‎. ‎To this end‎, ‎first a comprehensive equilibrium model for a joint put option and day-ahead markets is presented‎. ‎Interaction between put option and day-ahead markets‎, ‎uncertainty in fuel price, impact of premium bounds, and elasticity of con...