Yes.

The website will work with donations. Thank you for your support, which allows the site to continue existing !

The application code is licensed under GNU AGPL-3.0-or-later. This means people may study, modify, fork, and host the software, but operators of modified public versions must make the corresponding source code available to their users under the same license.

Please report it and send us a message about the content in question. We will review the request and take appropriate action as soon as possible.

Unless otherwise stated, Math Woods educational content, including problems, solutions, explanations, notes, and learning resources, is licensed under CC BY-NC-SA 4.0. This allows non-commercial educational reuse with attribution, provided adaptations are shared under the same license.

Not without permission. The CC BY-NC-SA 4.0 content license does not allow commercial reuse of Math Woods educational content. Services mainly intended to generate revenue, advertising income, commercial leads, paid tutoring, course sales, subscriptions, or commercial alternatives to Math Woods need written permission, even if initial access is free.

Yes. Math Woods gives additional permission for teachers, students, educational creators, and educational projects to use a small number of Math Woods problems in classes, videos, streams, notes, or learning materials, including on platforms that may be monetized, as long as they credit Math Woods, do not republish a substantial part of the problem bank, and do not present the content as their own database.

No. The Math Woods name, logo, domain, and visual identity are protected separately. Unofficial forks or services may not use them in a way that suggests they are official or endorsed.

Contributors keep responsibility for what they submit. By contributing public content to Math Woods, they confirm that they have the right to publish it and agree that it may be distributed under the Math Woods content license.

Yes. Public content and personal work should remain portable through Markdown and other simple formats. Personal account data is not public encyclopedia content and should never be included in public exports or datasets.

Usually not. Do not copy a book’s wording unless the material is genuinely in the public domain or the rights holder has granted suitable permission. Buying or owning a book does not grant republication rights.

We do not want to restrict the kind of problem statements that can be submitted here. However, we note that sometimes, the best version of a problem is in an "open question" form: does there exist an object with this property? Which examples are possible? "Show that no such function exists" might feel a bit too much like a school drill.

Absolutely, and we have a "Mathematical physics" category for that. With one important caveat: all problems must have the potential to be fully well-defined, with no ambiguity about which theory, assumptions, or axioms are being used.

For example, a problematic exercise would be one whose solution relies on conservation of energy even though the statement never indicates that conservation of energy may be assumed.

If you are unsure whether your exercise is suitable, try writing down all the assumptions, axioms, and principles used in its solution. If any of them are missing from the problem statement, the exercise may need to be clarified. We try to be flexible about this, so you are welcome to submit it anyway.

Not always ! For example, trick questions can be fun.

Prefer a short, descriptive title. Sentence case usually looks better than capitalizing every word. Avoid putting formulas directly in the title; put the mathematics in the statement instead. The title can stay plain.

No. A little repetition is fine. Mathematics cannot be divided perfectly into one exact page for every problem or concept: formulations, audiences, and useful levels of detail naturally overlap. Search first and avoid exact duplicates, but do not let partial overlap stop you from creating a useful page. Related pages can be linked, clarified, or merged later.

Although we value high quality to problems, contrary to websites such as Stack Exchange, there is no hard rule to enforce that new problems are immediately polished. We want people to be able to rely on the community to improve and filter problems over time.

The 1-100 score is a rough signal, not an objective measure. It assumes that the reader has the necessary prerequisites, and difficulty can vary with familiarity with the subject or the trick involved. As a loose convention: 1-10 is first steps or middle-school reference level; 10-25 is beginner or high-school level; 25-50 is intermediate or undergraduate level; 50-70 is advanced or graduate level; 70-90 is expert or specialized; and 90-100 is research-level.

Playlists are useful when you want to showcase a problem or concept that would be too long or too difficult to present as a standalone page because it requires too many prerequisites. In that case, you can create a playlist to guide readers through the necessary background step by step.

If your playlist is good enough, it may even be featured on the front page as the Playlist of the Week!

We recommend, whenever possible, making your problems independent from any specific playlist. This helps other creators reuse them in different contexts.

However, some steps may only make sense within a particular playlist and may not be worth turning into standalone problems. That is completely fine.

AI can be useful for brainstorming and finding the right terminology. However, we encourage users to reformulate ideas in their own words and write in a natural, human voice. AI should never be treated as an authority or as a substitute for carefully checking the mathematics.

AI-assisted or not, content that does not meet our quality criteria may be removed.

Yes. AI tools such as Codex and Claude were used to help create parts of the Math Woods code. All AI-assisted code has been reviewed by humans before being included. Human maintainers remain responsible for the quality of the code.

No. Public content needs a responsible human contributor.

We do not try to police how people solve problems. However, we recommend treating AI-generated solutions with extra caution, since they can be subtly incorrect even when they look convincing. AI should not replace your own reasoning or a careful verification of the mathematics.

This place is designed to be welcoming to everyone, especially beginners. We care about the quality of the atmosphere as much as the quality of the mathematics. Rude, dismissive, or condescending behavior toward other users will not be tolerated. Please also keep discussions on topic: avoid bringing in unrelated subjects such as politics, and avoid jokes or remarks that may make people feel uncomfortable or excluded.

Prefer sources, clear reasoning, and discussion. Trusted users may mark disputed content, roll back harmful changes, or temporarily restrict pages.

You can find an overview on the Roles page.