……（Israel Gelfand）——《什么是数学？对思想和方法的基本探讨》（Richard Courant）——《纯数学教程》（G.H. Hardy）——《线性代数》（Kenneth Hoffman 和 Ray Kunze）——《初等微分方程》（William Boyce 和 Richard DiPrima）——《拓扑学》（James Munkres）——《流形上的微积分》（Michael Spivak）——《数学分析原理》（Walter Rudin）——《实分析与复分析》（Walter Rudin）……
…(Israel Gelfand) - What Is Mathematics? An Elementary Approach to Ideas and Methods (Richard Courant) - A Course of Pure Mathematics (G.H. Hardy) - Linear Algebra (Kenneth Hoffman and Ray Kunze) - Elementary Differential Equations (William Boyce and Richard DiPrima) - Topology (James Munkres) - Calculus On Manifolds (Michael Spivak) - Principles of Mathematical Analysis (Walter Rudin) - Real and Complex Analysis (Walter Rudin)…
Elementary Differential Equations by Boyce and DiPrima I'm not sure I'd say that it made me significantly better at math, but I keep coming back to it time and again, and usually via very different paths.
……（Israel Gelfand）——《什么是数学？对思想和方法的基本探讨》（Richard Courant）——《纯数学教程》（G.H. Hardy）——《线性代数》（Kenneth Hoffman 和 Ray Kunze）——《初等微分方程》（William Boyce 和 Richard DiPrima）——《拓扑学》（James Munkres）——《流形上的微积分》（Michael Spivak）——《数学分析原理》（Walter Rudin）——《实分析与复分析》（Walter Rudin）……
…(Israel Gelfand) - What Is Mathematics? An Elementary Approach to Ideas and Methods (Richard Courant) - A Course of Pure Mathematics (G.H. Hardy) - Linear Algebra (Kenneth Hoffman and Ray Kunze) - Elementary Differential Equations (William Boyce and Richard DiPrima) - Topology (James Munkres) - Calculus On Manifolds (Michael Spivak) - Principles of Mathematical Analysis (Walter Rudin) - Real and Complex Analysis (Walter Rudin)…
Boyce 和 DiPrima 写的《初等微分方程》。我不确定它有没有让我的数学水平突飞猛进，但我总是一次又一次翻开它，而且往往是通过完全不同的思路找回来的。
Elementary Differential Equations by Boyce and DiPrima I'm not sure I'd say that it made me significantly better at math, but I keep coming back to it time and again, and usually via very different paths.