Hi aspirant,

1. To apply for a PhD in a mathematics department, you would normally require a Master's degree in mathematics or a closely related discipline, as well as an impressive academic record.
2. Begin by studying universities and their mathematics departments, examining their research fields and staff to find a good fit for your interests.
3. Most programs require you to submit an online application that includes records, a statement of purpose outlining your research interests and goals, letters of recommendation from academic references, and, in some cases, standardized test scores such as the GRE. Some departments may additionally require an interview as part of their selection process.
4. Keep an eye on the application dates for the universities you're interested in; they can vary.

PhD in Mathematics Course

You can also refer to the link given above for more information on the same.

All the best!