Analyzed on the characteristics of american section structure, according to years experiences and consideration of american section extruding die design, described the design key points of american section extruding die.

This article has advanced the concept of American and European style finishing technology and its classification, and given the explanation of its technological process.

American option pricing of a special model;

A trinomial tree methods for pricing American options;

Asymptotic expansion of optimal exercise boundary near expiry for an American option when r=q;