Applicants need to apply to the Toulouse Graduate School at the University of North Texas and specify mathematics as their course of study. Complete application information, including deadlines, is available on the Graduate Admissions page. You can contact Toulouse directly at 940-565-2383 (+1-940-565-2442 for international callers).
A well-qualified applicant will have the equivalent of an undergraduate degree with a major in mathematics from UNT. The precise requirements for a major in mathematics can be found Undergraduate Catalog. An applicant should have completed foundational courses in Calculus, Linear Algebra, and Differential Equations, as well as the equivalent of at least seven, one-semester, upper-division mathematics courses. Students without this background may be provisionally admitted by the Mathematics Department if their record of achievement indicates they will be able to successfully pursue a graduate degree in mathematics. Students admitted provisionally by the department may be required to make up any deficiencies upon enrolling at UNT.
The mathematics graduate program requires applicants to submit a quantitative, a verbal, and a written GRE score from the general GRE exam. These scores should be at most three years old. It is also strongly encouraged that applicants submit a mathematics GRE subject exam score.
There are additional requirements for international students. Links to more information specifically for international students may be found here.