the distinction between primitive predication and common predication is applied to solve some problems in islamic philosophy, some of which are incorrect in our point of view. some of the problems contain paradoxes and some others include independent philosophical discussions: 1. stating about absolute non-existents, 2. problems of subjective existence, 3. liar paradox and russell’s paradox, 4....

The author describes a series of matrix choice games illustrating monopoly, shared monopoly, Cournot, Bertrand, and Stackelberg behavior given either perfect complements or perfect substitutes. The games are created by using a spreadsheet to fill out a profit table given the choices of two players. One player selects the column, the other the row, and the table gives the profit of the row choos...

We study continuous time Bertrand oligopolies in which a small number of firms producing similar goods compete with one another by setting prices. We first analyze a static version of this game in order to better understand the strategies played in the dynamic setting. Within the static game, we characterize the Nash equilibrium when there are N players with heterogeneous costs. In the dynamic ...

In this paper we propose a theory of Bertrand competition where firms form beliefs by considering only a subset of the available variables. This theory of coarse updating leads to equilibria where firms set prices according to constant mark-up strategies, which is consistent with the empirical evidence found in survey data. Moreover it leads to higher prices than the standard theory, which is i...

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