无定义的实无穷概念是第三次数学危机的真正根源
The Non-defined Actual Infinity Concept Is the Very Source of The Third Mathematical Crises
数学基础理论中这个致命缺陷是导致第二次与第三次数学危机的最根本原因。
This fatal defect in the foundation of mathematics causes all the troubles and paradoxes related to the second and the third mathematical crises .