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CONTENTS Volume 34, Number 3 September 2006 Interpolation Conditions and Polynomial Projectors Preserving Homogeneous Partial Differential Equations Dinh Dung  241 Weighted Composition Operators Between Different Weighted Bergman Spaces in Polydiscs Li Songxiao 255 Simply Presented Inseparable V (RG) Without R Being Weakly Perfect or Countable Peter Danchev  265 Some Results on the Relation Between Pluripolarity of Graphs and Holomorphicity Le Mau Hai and Phung Van Manh  275 Solution to an Open Problem on the Integral Sum Graphs Shuchao Li, Huiling Zhou, and Yanqin Feng 285 Global Existence of Solution for Semilinear Dissipative Wave Equation MD. Abu Naim Sheikh and MD. Abdul Matin 295 Polar Coordinates on H-Type Groups and Applications Junqiang Han and Pengcheng Niu  307 On the Functional Equation P(f)=Q(g) in Complex Numbers Field Nguyen Trong Hoa  317 Strongly Almost Summable Differences Sequences Hifsi Altinok, Mikail Et, and Yavuz Altin  331 Weakly d-Koszul Modules Jia-Feng Lu and Guo-Jun Wang  341 The Embbeding of Haagerup Lp-Spaces Phan Viet Thu 353 Robust Stability of Metzler Operator and Delay Equation in Lp([-h,0];X) B. T. Anh, N. K. Son, and D. D. X. Thanh 357

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