**Advising.** Usually, a student prepares a long-range plan and
declares a first major in mathematics through the Premajor Advising
Center; the student is then assigned an official faculty advisor by
the Director of Undergraduate Studies. First majors are required to
meet with their advisors each semester during the registration
interval. The student and advisor should work together to ensure that
the program of study is consistent with the student's interests and
professional goals.

A student who has declared a second major or a minor in mathematics will receive formal advising in the department of his or her first major; however second majors and minors and students considering a degree in mathematics may see the Director of Undergraduate Studies for advice or for referral to an appropriate member of the mathematics faculty. A second major or a minor in mathematics (or a change of major or minor) may be declared in the Office of the Registrar.

**Choosing courses.** Every mathematics major must take one course
in abstract algebra (Mathematics 121 or Mathematics 200) and one
course in advanced calculus (Mathematics 139 or Mathematics 203). To
avoid conflicts during the final semesters of a major's program, these
courses should be taken as early as practicable. An essential part of
these courses is proving mathematical theorems. Students with little
exposure to proofs should probably take the 100-level version of
these courses, possibly prefacing them with Mathematics 120S (see
paragraph below). Students who are comfortable with abstract ideas,
and especially those students who are contemplating graduate work in
mathematics, should consider taking the 200-level courses. The
remaining courses may be chosen from both pure and applied areas of
mathematics.

Mathematics 120S is a half-course recommended for prospective mathematics majors who feel the need to improve skills in logical reasoning and theorem-proving before taking Mathematics 121 and 139. Ideally, Mathematics 120S should be taken before the junior year and concurrently with Mathematics 103 or Mathematics 104. Students working toward the A.B. degree who do not take Mathematics 120S will usually fulfill their major requirements by taking at least seven full courses in mathematics numbered above 111.

There have been some recent changes in the mathematics major
requirements, so it should be noted that ``Students are responsible
for meeting the requirements of a major as stated in the bulletin for
the year in which they matriculated in Trinity College, although
students have the option of meeting requirements in the major changed
subsequent to the student's matriculation'' (see page 21 of the
1996-97 undergraduate *Bulletin*.)

**Probability and statistics courses**. The standard sequence in
probability and statistics is Mathematics 135-136. Mathematics 135
covers the basics of probability and Mathematics 136 covers
statistics, building on the material in Mathematics 135. Those
desiring a further course in probability should select Mathematics
216; a further course in statistics is Mathematics 217.

The Institute of Statistics and Decision Sciences (ISDS) offers a number of courses in statistics at various levels for students of varied mathematics backgrounds. Usually, such courses cannot be counted for mathematics major or minor credit unless they are cross-listed in the Department of Mathematics. The Director of Undergraduate Studies may approve certain statistics courses numbered above 200 for credit, but usually only courses that have a prerequisite of Mathematics 136 or its equivalent will be considered.

Tue Sep 3 16:48:03 EDT 1996