toposcat.top

What is this site?

Topos Cat (toposcat.top) is a personal original blog focused on mathematics, computer graphics, and artificial intelligence. It was built by its developer to share personal learning notes and technical practices, with content covering pure mathematical theory, computer graphics algorithm derivation, and engineering implementation, balancing both theoretical depth and practical details.

Core Features & Content

The site's core content falls into two categories:

• Original technical articles: covers mathematical topics including algebra, category theory, and probability theory, as well as algorithm derivations for computer graphics topics like PBR, path tracing, volumetric rendering, and image-based lighting. All mathematical formulas are typeset with LaTeX for clear readability.
• Runnable online WebGL technical demos: users can experience the algorithm's rendering effect directly in their browser. All source code is open to view, and supports further learning and modification.

In addition, the site also compiles and provides exercise solutions and complete learning notes for multiple classic mathematics textbooks, available for learners to download and use.

Pricing & Access

All content on the entire site is completely free to access. There is no paywalled content or commercial advertising, and the site can be accessed directly and normally from within China.

Pros & Cons Summary

The advantages are very prominent:

• Content is highly original; Chinese-language resources for many of these niche subfields are quite scarce, and this site's derivations are clear and complete, balancing both theory and engineering implementation, with very high learning value.
• It is completely ad-free for a clean browsing experience.
• It offers runnable demos and source code, which is much more intuitive than pure text explanations.

As a personal blog, the downsides are: unstable update frequency, poor compatibility for WebGL demos on mobile devices, and content that caters primarily to professional learners rather than a general audience.

Who This Is For

It is an excellent in-depth reference resource for students and entry-level developers in computer graphics, and mathematics learners. It is also great for developers looking to reproduce modern rendering algorithms to find the technical details they need.