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E.M. El-Kholy,M.E.M. Basher,M. R. Z. El-Deen 충청수학회 2005 충청수학회지 Vol.18 No.2
In this paper we introduced the concept of perfect folding defined on E$^2$ which equipped by perfect k-coloring of r-monohedral tillings. Then we studied the different cases of perfect foldings of 4-monohedral and 3-monohedral tillings of E$^2.$ Also the permutations describe each folding are obtained.