美国数学家哈尔莫斯曾经说过,数学究竟是由什么组成的?是概念?公理?定理?定义?公式?证明?诚然,没有这些组成部分,数学就不存在了,这些都是数学的组成部分。但是,它们中的任何一个都不是数学的核心所在。数学的核心应该是越过这些表面知识的内在问题、思想和方法。问题是数学的心脏,思想是数学的灵魂,方法是数学的行为。通俗地说,数学知识解决“是什么”的问题,数学 Harmuth, an American mathematician, once said that mathematics is actually made up of what? Is the concept of axioms? Theorem? Formula? Prove? Admittedly, without these components, mathematics does not exist, these are mathematical component. However, none of them is at the heart of mathematics. The core of mathematics should be the intrinsic problems, ideas and methods that cross these surface knowledge. The problem is the heart of mathematics, thought is the soul of mathematics, the method is mathematical behavior. To put it in a nutshell, mathematical knowledge solves the problem of “what is it”, math