This is based on the information in the modal window which was created here: What should the modal window for first-time askers say?
The answer is a community wiki - feel free to edit it further, if you have some improvements.
Is your question about research-level mathematics?
- This site is for questions about research-level mathematics. (Use other sites for general mathematical questions.)
- Make sure that the question includes the necessary background and has an informative title. (See also: How to write a good MathOverflow question?)
- The question should be properly formatted - use MathJax (TeX-like syntax) for writing mathematics.
- Before you post, search the site to make sure your question hasn’t already been asked and answered.