Hello World
A brief introduction to this site: what it is, what you will find here, and how the notes are organised.
随记
短篇：面试题、独立证明、偶尔的思考。
Building a Mathematics Notebook with Astro
Technical notes on constructing a static site for mathematical writing, with KaTeX rendering and content collections.
A Quick Proof that Eigenvalues of a Real Symmetric Matrix are Real(ai templete Not the content of the notes will be )
A short, self-contained proof using the complex inner product -- a common interview question in linear algebra.