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CONTENTS Volume 34, Number 2 June 2006 Lacunary Strongly Summable Sequences and q-Lacunary Almost Statistical Convergence Rifat Colak, B. C. Tripathy, and Mik\^{a}il Et  129 Some Results on the Properties D3(f) and D4(f) Pham Hien Bang 139 A Fixed Point Theorem for Nonexpansive Mappings in Locally Convex Spaces Ha Duc Vuong  149 On Score Sets in Tournaments S. Pirzada and T. A. Naikoo  157 On the Asymptotic Behavior of Solutions of a Nonlinear difference equation with bounded multiple delay Dinh Cong Huong 163 K0 of Exchange Rings with Stable Range 1 Xinmin Lu and Hourong Qin 171 On Convergence of Vector-Valued Weak Amarts and Pramarts Dinh Quang Luu  179 The Quantum Double of a Dual Andruskiewitsch-Schneider Algebra Is a Tame Algebra Meihua Shi  189 Hopf-Lax-Oleinik-Type Estimates for Viscosity Solutions to Hamilton-Jacobi Equations with Concave-Convex Data Tran Duc Van and Nguyen Duy Thai Son   209

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