The Existence of Balanced Difference Families and Perfect Difference Families;

The Judgment of Inverse M-Matrix Completion Based on Digraph and Its Algorithm Design & Realization;

In the paper, the completion problems of the partial matrices are discussed.

A known result on the Deskins completion is extended by using“θ-pairs”and a key error in the proof of the known result is corrected in passing.

Compactness and Completeness of Fuzzy Normed Linear Space;

Complete Algorithm of Quick Heuristic Attribute Reduction Based on Indiscernibility Degree

In order to probe into the properties of frequency spectrum for a group of parametric curves, a class of orthogonal complete piecewise k-degree polynomials in L 2[0,1],called U-system, is introduced.

),we get a necessary condition on which L is perfect by expanding the derivatives of R on L.

In this paper, we shall determine the structure of perfect π regular type A ω semigroups.

Since China s concerning legislation have many defects at present, a comparative perfect legislation system of service trade should be established in China, so as to meet the requirements of WTO and GATS as well as the development of China s service trade.