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Due to arbitrariness of handwritten mathematical fo rmula, it is difficult to do the structural analysis and displaying automatically. In this paper, an improved algorithm of generating ternary tree is proposed to solve the limitation. Firstly, a ternary tree of character sequence in handwritten mathemat ical formula is generated according to rule of first-in and first-out. Then the ternary tree is translated into MathML by preorder traversal algorithm, and finally handwritten mathemat ical formula is displayed on the web browser. Compared to the traditional binary tree, the ternary tree can show the hierarch ical structure of mathematical formula better, and can also analyze structure of complicated formula well. Meanwhile, the ternary tree contains high sense of portability, which can be applied to chemical and physical formula etc.

Structural Analysis and Display of Handwritten Mathematical Formula Based on Ternary Tree