A BA in Mathematics means a Bachelor of Arts in Mathematics. A BA in Mathematics has a different emphasis than a Bachelor of Science (BS) in Mathematics. BA is a good choice for math students who may want to work in business capacities, such as Finance, Accounting, or Economics. Whereas the BS in Mathematics is more of a core development of math without emphases in different (albeit related) fields, (the BA is appropriate to fields such as Economics or Actuarial Science).