Our Mission
007007009 exists because mathematics belongs to everyone. We believe that a student in any part of the world deserves the same quality of mathematical education — clear explanations, rigorous content, and beautiful presentation — that was once available only in elite institutions.
Our platform covers the complete spectrum of mathematics: from a child's first encounter with counting, through the abstractions of undergraduate and graduate study, all the way to active areas of PhD-level research. Every topic is written with academic rigour, supported by citations from peer-reviewed sources and authoritative standards bodies.
Free & Open
Every page is free to access, forever. No paywalls, no subscriptions, no ads.
Rigorous & Cited
All content cites reputable sources: NCTM, CCSS, peer-reviewed journals, and classic textbooks.
Complete Coverage
From counting to category theory. Six levels spanning ages 5 through postdoctoral research.
Interactive Learning
Quizzes, visualizations, worked examples, and practice problems on every topic.
What We Cover
007007009 is structured into six progressive levels, each with dozens of detailed topic pages:
“Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.”— William Paul Thurston, Fields Medallist
Our Values
- Accuracy First: Every definition, theorem, and example is checked for mathematical correctness. We cite primary sources and authoritative standards.
- Clarity Over Brevity: We'd rather explain something in three clear steps than compress it into one confusing sentence. Understanding trumps elegance in pedagogy.
- Progressive Rigour: Elementary pages use intuitive language; graduate pages use formal notation. The level of formalism grows with the learner.
- Inclusive Design: Responsive layouts, high-contrast text, and semantic HTML ensure the content is accessible to every learner on any device.
- No Gatekeeping: Advanced topics are not hidden behind prerequisites. If you're curious about topology, start reading — we'll point you to the background you need.
The Name
007007009 — three blocks of digits with an infinity symbol at the heart. The name is a nod to the beauty of number patterns and the infinite depth of mathematical exploration. Like the digits of \(\pi\), our content keeps going: there is always more to discover.
Our tagline, "Explore Mathematics. Solve Logic. Create Futures," captures the three pillars of our approach: exploration of ideas, the discipline of logical reasoning, and the transformative power that mathematical literacy brings to every career and every life.
Contact
007007009 is an open-source project. If you'd like to contribute, report an error, or suggest a topic, visit our GitHub repository.