This analysis reveals the restricted scope of approaches which utilise arbitrage based arguments toprice contingent claims whose payoffs are determined by the outcome of non-zero-sum valuationgames between financial market participants. Many examples of such model formulations can befound, for...

We build a general model for pricing defaultable claims. In addition to the usual ab-sence of arbitrage assumption, we assume that one defaultable asset (at least) looses value when thedefault occurs. We prove that under this assumption, in some standard market ltrations, defaulttimes are...

Die Arbeit geht auf die Frage ein, ob behaviorale Modelle empirisch überprüft werden können, weil die weichen Faktoren der Marktteilnehmer (ihr Behavior) sowie die Transzendenz dieser Begriffe mit einer wissenschaftlichen Unsicherheit assoziiert sind...

Today's primarily mathematically oriented arbitrage theory does not address some economicallyimportant aspects of pricing. These are, rst, the implicit conjecture that thereis \the" price of a portfolio, second, the exact formulation of no{arbitrage, price reproduction,and positivity of the...

The thesis consists of two essays: "The CAPM -- A General Equilibrium Foundation" and "The Foreign Exchange Rate in Financial Markets".The Capital Asset Pricing Model (CAPM) is one of the most successful models for portfolio selection. The utility functions are assumed to depend positively on...

stock markets linkages and analysis of the arbitrage between spot and futures markets. The first part is devoted to examination of long and short term dependencies between markets. As an example of long term relationship between stock markets, the influence of US market on the most important...