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ralph lauren polo

Raphael Thomadsen
''Existence of pure strategy equilibria among geographically dispersed firms''
( 2005, Vol. 12 No.12 )
This paper gives a proof of existence of price equilibria under certain parameters for a model of product differentiation commonly used in the empirical geographic differentiation literature. This proof is needed because the assumptions of Caplin and Nalebuff (1991) are not generally satisfied once data is introduced to geographic models. The theorem also has implications for existence in mixed-logit demand models.
Keywords: Differentiated products
JEL: L1 - Market Structure, Firm Strategy, and Market Performance: General
Manuscript Received : Nov 25 2004 Manuscript Accepted : Jul 26 2005

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