
WetranslatetothedomainofmathematicalfinancewhatF.Knightwrote,insubstance,intheprefaceofhisEssentialsofBrownianMotionandDiffusion(1981):"ittakessometemerityfortheprospectiveauthortoembarkonyetanotherdiscussionoftheconceptsandmainapplicationsofmathematicalfinance".Yet,thisiswhatwehavetriedtodoinourownway,afterconsiderablehesitation.
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