图12. 海涅-博莱尔定理： "欧几里得空间的紧凑子集正是那些封闭和有界的子集。"
The Heine-Borel theorem: "The compact subsets of Euclidean space are precisely those that are closed and bounded."
图13. 奇异值分解： "每个矩阵都可以被分解为一个单元矩阵、一个对角线矩阵和另一个单元矩阵的乘积"。
The singular value decomposition: "Every matrix can be decomposed into the product of a unitary, a diagonal, and another unitary matrix."
图14. 奖励："实数的集合是不可计数的无限的，以萨尔瓦多-达利的风格。"
Bonus: "The set of real numbers is uncountably infinite, in the style of Salvador Dali."
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