Vietnam Journal
of
MATHEMATICS

Volume 26, Number 1, 1998


1

Partial Differential Inequalities of Haar Type and Their Applications to the Uniqueness Problem
Tran Duc Van, Nguyen Duy Thai Son, and Le Van Hap

1

2

Compactification Methods in a Control Problem of Jump Processes under Partial Observations
Nguyen Huu Du

29

3

A Maximal Volume Cone Algorithm for Linear Programming Problems
Nguyen Ngoc Chu and Nguyen Vu Tien

45

4

Subdifferential Characterization of Quasiconvex and Convex Vector Functions
Phan Nhat Tinh, Dinh The Luc, and Nguyen Xuan Tan

53

5

Convergence of the Rademacher Series in a Banach Space
Nguyen Duy Tien and Vidal Vazquez Ricardo

71

6

On the Length of Generalized Fractions of Modules Having Polynomial Type ≤ 2
Nguyen Tu Cuong and Nguyen Duc Minh

87

7

A Remark on Analytic Pseudodifferential Operators with Singularities
Nguyen Si Anh Tuan

91