超越无限Beyond infinity |
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课程网址: | http://unow.nottingham.ac.uk/resources/resource.aspx?hid=e8b0159c... |
主讲教师: | Joel Feinstein |
开课单位: | 诺丁汉大学 |
开课时间: | 信息不详。欢迎您在右侧留言补充。 |
课程语种: | 英语 |
中文简介: | 这个流行的数学讲座介绍了各种各样的无穷大,包括可数的和不可数的。这些概念以一种非正式的方式用希尔伯特无限旅馆的概念来说明。在这个演讲中,酒店经理试图将各种各样的客人集合到酒店中。学生应该知道,许多明显不同类型的无穷大实际上是相同的大小。然而,还有真正的“更多”。用康托的对角化论证,如最后一节所示,实数比正整数更有挑战性。 |
课程简介: | This popular maths talk gives an introduction to various different kinds of infinity, both countable and uncountable. These concepts are illustrated in a somewhat informal way using the notion of Hilbert's infinite hotel. In this talk, the hotel manager tries to fit various infinite collections of guests into the hotel. The students should learn that many apparently different types of infinity are really the same size. However, there are genuinely "more" real numbers than there are positive integers, as is shown in the more challenging final section, using Cantor's diagonalization argument. |
关 键 词: | 数学讲座; 无限酒店; 对角化论证 |
课程来源: | 信息不详。欢迎您在右侧留言补充。 |
最后编审: | 2018-12-18:wrq |
阅读次数: | 72 |