康托尔是德国著名的数学家,集合论(现代数学的一个分支)的创始人。当他在哈雷大学任教时,经常去学校附近的一个酒吧喝啤酒。有一次,他在酒吧里碰到一个喜欢数学的小伙子,两人边喝边聊很是投机。康托尔向小伙子问起了一个数学问题:“偶数和自然数你是知道的吧!那这两种数中哪种‘个数’更多一些呢?”“那还用说,偶 Cantor is the famous German mathematician, founder of set theory (a branch of modern mathematics). When he teaches at Harley University, he often goes to a pub near the school to have a beer. Once, he met a guy who liked math in the bar, and it was speculation that they both talked and talked. Cantor asked the young man a mathematical question: ”Even numbers and natural numbers do you know! Which of these two numbers is more?“ ”