How do I ask a question or get help on MathOverflow?

To ask a question on MathOverflow, start from the homepage and use the Ask Question link; you will need to sign up or log in first. For help using the site, the Help Center covers common questions, while MathOverflow Meta is the place for questions about site policies and operations. The homepage also exposes Tags, Chat, and Users as entry points for finding the right topic area and community.

Asking a question

The homepage navigation includes Questions, Unanswered, Tags, Chat, and Users, plus an Ask Question action. The practical flow is:

1. Sign up or log in (the header offers Sign up and Log in).
2. Choose Ask Question.
3. Pick the most relevant tag for your topic so the right readers see it.

The homepage tag list shows the kind of subject areas in use, for example ag.algebraic-geometry, nt.number-theory, co.combinatorics, fa.functional-analysis, pr.probability, dg.differential-geometry, at.algebraic-topology, gr.group-theory, and rt.representation-theory. A more tags link expands the list. Selecting an existing tag is more useful than inventing a label, because tags are how questions are browsed and filtered.

Expected result: your question appears in the question list and becomes visible to logged-in users who follow that tag. If you are unsure whether your question fits, check the Tour page first — it is described as a quick overview of the site.

Getting help with the site itself

Two separate help routes exist, and they answer different things:

A common sticking point is posting a policy or moderation complaint as a regular math question. Those belong on Meta, not the main question feed. Likewise, "how do I format X" or "why was my post closed" questions belong in the Help Center or Meta rather than as a new math question.

Finding the right community and topic

MathOverflow is described as part of Stack Overflow's open communities — specialist spaces where knowledge is shared freely and the best answers rise to the top. The homepage reflects this with several discovery paths:

• Tags — browse by subject area; the tag list is the fastest way to see whether your topic already has an active audience.
• Users — look up participants and their reputation scores, which are shown next to each post (for example, a question listed with "119 reputation score").
• Chat — a lighter-weight space for discussion; the header links to help chat and MathOverflow Meta.
• Unanswered — a direct route to questions still lacking a response, useful if you want to contribute an answer rather than ask.

The question list itself can be sorted by Active, Bountied, Hot, Week, and Month, and each entry shows votes, answers, and views. For example, a recent listing showed a topology question with 3 votes, 8 answers, and about 3,080 views, and a group-theory question with 53 votes and about 8,782 views. These signals help you judge whether a topic draws attention before you post.

What to expect after posting

Questions are visible with their tags, vote count, answer count, view count, and the asker's reputation. Edits and answers update the "modified" time — listings show entries modified "54 mins ago" or "1 hour ago". If your question gets no response, the Unanswered view is where it will sit, and Bountied shows questions where users have added a bounty to attract answers.

One caveat worth knowing before you invest effort: the site is oriented toward professional mathematicians, so questions are expected to be research-level and clearly stated. If your question is more general, the Help Center and Meta are the right places to check expectations first.