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CONTENTS Volume 36, Number 4 December 2008 Complemented Subspaces in L∞(D) Namita Das  373 Hadamard gap Theorem and Overconvergence for Faber-Erokhin Expansions Patrice Lass\`ere and Nguyen Thanh Van 387 On Maps and Generalized $\Lambda_b$-Sets N. Rajesh  395 New Lacunary Strongly Summable Difference Sequences and $\triangle^{m}_v$- Lacunary Almost Statistical Convergence Vakeel A. Khan  405 Prime Ideals of Group Graded Semirings and Their Smash Products Ram Parkash Sharma and Rosy Joseph 415 Localization of Pseudo Generalized Cohen-Macaulay Modules Nguyen Thi Hong Loan 427 Some Generalized Quasi-Ky Fan Inequalities in Topological Ordered Spaces Nguyen The Vinh  437 On a Problem by A. Hajnal and I. Juh\'{a}sz Nuno C. Freire and M. F. Veiga  451 Ore Extensions over 2-primal Rings V. K. Bhat and Ravi Raina   455 Distance from an Exactly Controllable System to Not Approximately Controllable Systems B. T. Anh, D. C. Khanh and D. D. X. Thanh  463 Controllability Radius of Linear Systems under Structured Perturbations Nguyen Khoa SOn and Do Duc Thuan  473

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