Calvin Khor

Personal blog about mathematics, programming, and technology

I'm looking for interesting opportunities: check out my resume. PhD in Mathematics.

Happily married to Xiaoyan Su!

Newest Blog Post

May 15, 2026

Rellich–Kato Let be a self-adjoint operator and . We say that an operator defined on is -bounded with relative bound if there exists such that...

Publications, notes, teaching materials, and translations.

Thoughts and tutorials about mathematics, programming, and technology.

My open source projects and contributions.