格致开物, also known as MathWiki, is an online mathematics learning and reference platform built around the idea that mathematics connects concepts, theorems, and intuition. It helps learners explore subjects through a structured knowledge map, guided learning paths, topic navigation, and illustrative examples. Its coverage ranges from foundational logic, algebra, number theory, geometry, and topology to calculus, differential equations, probability, statistics, and discrete mathematics.

The site also features algorithms, numerical analysis, optimization, mathematical modeling, economics, financial mathematics, and physics. Learning resources include introductions to algebra and statistical modeling, applied mathematics topics, and worked examples using practical scenarios such as orders, cash flow, inventory, and growth. MathWiki provides a directory of national and international mathematical modeling competition problems, data attachments, and result templates, with materials listed through 2026.

Readers can also explore featured mathematical ideas, including Euler’s formula, and browse explanations of topics such as matrices, Bayesian reasoning, and optimization. The site notes that some text, illustrations, and examples are AI-generated or AI-assisted and may require verification against cited sources