Volume 5 (2009) 

Contents: 

1. Zhanmin Zhu

"Some Results On GQP-injective Modules", 5, 2009, 1-6. (pdf) 

2. Jiangmin Pan

"Laws of Metabelian Products of Abelian Groups", 5, 2009, 7-16. (pdf) 

3. Truong Cong Quynh

"Some Characterizations of ef-extending Rings", 5, 2009, 17-26. (pdf)

4. Edmundo Castillo and Rafael Diaz

"Rota-Baxter Categories", 5, 2009, 27-57. (pdf) 

5. M. Tamer Koşan  

"Generalized Cofinitely Semiperfect Modules", 5, 2009, 58-69. (pdf)

6. V. K. Bhat

"On Near Pseudo-valuation Rings and Their Extensions", 5, 2009, 70-77. (pdf)

7. Jonathan Groves

"D-Nice Polynomials with Four Roots Over Integral Domains D of Any Characteristic", 5, 2009,  78-105. (pdf)

 8.  Alaa Hassan Nor-Eldean and Y. Gh. Gouda

"On the Dihedral (Co)Homology for Schemes", 5, 2009, 106-113. (pdf)

 9. Naser Zamani

"A Formula for Reduction Number of an Ideal Relative to a Noetherian Module",  5, 2009, 114-120. (pdf) 

10. D. E. Dobbs, G. Picavet and M. Picavet-L'Hermitte

11. Alberto Facchini and Pavel Príhoda

 "Factor Categories and Infinite Direct Sums", 5, 2009, 135-168. (pdf) 

12. Liangcai  Zhang and Wujie Shi 

"Noncommuting Graph Characterization of Some Simple Groups with Connected Prime Graphs", 5, 2009, 169-181. (pdf)