HIRST AND ZILVA [1933] showed that the antiscorbutic value of dehydroascorbic acid prepared by oxidation of ascorbic acid with iodine was only slightly less than that of the ascorbic acid from which it had been prepared. Having devised a simple method for preparing dehydroascorbic acid free from cont4minating substances [Fox and Levy, 1936] it was thought worth while to study this interesting o...

We consider models for stock prices which relates to random pro cesses with independent homogeneous increments Levy processes These models are arbitrage free but correspond to the incomplete nancial market There are many di erent approaches for pricing of nancial derivatives We consider here mainly the approach which is based on minimal relative entropy This method is related to an utility func...