Mathematicians today are engaged in a wide variety of activities. Research mathematicians create new theories and techniques. Applied mathematicians use that theory and mathematical modeling to solve problems in economics, science, medicine, engineering, and management. Teachers of mathematics develop new ways to teach mathematical concepts to children and adults. University-level mathematics involves more than algorithms and computational techniques. Mathematics majors also learn to construct proofs and how to approach a real-life problem from a mathematical point of view. <br>Students pursuing either a B.A. or a B.S. degree may combine a second major with Mathematics. In this circumstance, upon approval of an advisor, 6 units of upper division electives may be satisfied by courses in the second major. The remaining electives must be taken in the Department of Mathematics. Under certain rare conditions, the physics requirement in the lower division core may be replaced by appropriate coursework in the second major. Prior approval must be obtained from an advisor and the department chair for this latter occurrence.