Table of Contents

On the Product of Sphere Bundles and the Duality Theorem Modulo Two; On Universal Invariant Forms; The Out-In Complementary Principle; On Chern Numbers of Algebraic Varieties with Arbitrary Singularities; On the Foundation of Algebraic Differential Geometry; On a Finiteness Theorem About Optimization Problems; On Surface-Fitting Problem in CAGD; On the Development of Real Number System in Ancient China; and other papers.