APN mathematics structure is defined formally and Qualitative Mapping model can be described vividly by making use of the tool of the APN graphics.

形式化地定义了APN的数学结构，利用APN图形化的工具，形象地描述了定性映射。

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We describe the concepts of mathematics structure and isomorphism of structures, so that one can get a deeper understanding of the relations between substances in middle school mathematics;

阐明数学结构和结构同构的概念，以加深对中学数学内容相互关系的理解；

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This paper expounds the production of the Chinese version of Euclid's Geometry, its basic content structure and important contribution to Mathematics and the human civilized history.

阐述了欧几里德《几何原本》中译本的产生、基本内容结构及其在数字与人类文明史上的重要贡献。

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One team, for instance, inserted the virus into a program running a Mandelbrot set, a complex, mathematics-based structure named after the father of fractal geometry.

FORBES: Catching The Hacking Bug

Last month, the government's numeracy taskforce issued detailed guidelines for primary schools, calling for one hour of mathematics every day and outlining an ideal structure for the lessons.

ECONOMIST: New skool rules, OK? | The