V2EX fundamental solution

Fundamental Solution

释义 Definition(中文)

基本解 / 基本解函数:在偏微分方程与数学物理中,指对“点源”(如狄拉克 δ 函数)激励的特殊解,常用于构造更一般的解(例如通过卷积)以及与 Green 函数相关的表示公式。

例句 Examples

The fundamental solution of the Laplace equation is used in potential theory.
拉普拉斯方程的基本解常用于势理论中。

By convolving the fundamental solution with the source term, we can obtain a solution to the Poisson equation under suitable conditions.
在适当条件下,将基本解与源项做卷积,可以得到泊松方程的一个解。

发音 Pronunciation (IPA)

/fndmntl slun/

词源 Etymology(中文)

fundamental 来自拉丁语 fundamentum(“基础、根基”),含“最基础的、根本的”。solution 来自拉丁语 solutio(“解开、松开”),在数学语境中引申为“方程的解”。合起来的 fundamental solution 字面是“最基本的解”,在 PDE 里特指对应点源的核心解型。

相关词 Related Words

文学与典籍 Literary Works(出现来源示例)

  • Partial Differential Equations(Lawrence C. Evans)
  • Methods of Mathematical Physics(Richard Courant & David Hilbert)
  • Partial Differential Equations of Mathematical Physics(S. L. Sobolev)
  • Fundamentals of Partial Differential Equations(文本中常以该术语讨论基本解与Green函数的关系)
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