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# ManySpace
> Choose a goal and see every prerequisite between you and it. Mathematics, physics and AI/ML, a daily plan, memory-model reviews and free interactive tools.
A study system for mathematics, physics and AI/ML. It decides what to learn next, shows what is blocking you, and schedules every review. What ManySpace is, how its engine decides what to study next, what is and is not finished, and who built on whom.
Every topic page names what must be learned before it (its prerequisites, with links) and what it opens next, so a question of the form "what do I need before learning X" is answered by X's page, and each page also exists as clean Markdown by appending `.md` to its URL. English URLs are canonical; Turkish versions of the same pages live under the `/tr` prefix. Content updated: 2026-10-13. ManySpace is a product of Aporia Systems (https://aporia.systems).
## Start here
- [Home](https://manyspace.aporia.systems/): ManySpace — a prerequisite map and study system for math, physics and AI
- [Subjects](https://manyspace.aporia.systems/subjects): Subjects mapped as one prerequisite graph: every course, every topic and what each one needs first.
- [Free interactive tools](https://manyspace.aporia.systems/tools): Eighteen free interactive labs: launch projectiles, flip coins, tile integrals, spin the unit circle, melt secants, turn complex numbers, and price errors. No signup.
- [Pricing](https://manyspace.aporia.systems/pricing): Free to explore: topic pages, subject maps and every interactive tool. One subscription unlocks the full workspace. Billing is handled by Gumroad.
- [About](https://manyspace.aporia.systems/about): What ManySpace is, how its engine decides what to study next, what is and is not finished, and who built on whom.
## Subjects
- [Mathematics](https://manyspace.aporia.systems/subjects/mathematics): From natural numbers and fractions through calculus, linear algebra, probability and proof.
- [Physics](https://manyspace.aporia.system