To browse books on subjects in mathematics, use the links below to go to the page in the catalog on which a subclass begins. Due to restrictions on linking to a range of different call numbers in the Classic Catalog, you may have to scroll down to find the first book on a given subject.
Washington WashU Libraries uses the Library of Congress Classification System (LC) to group books according to subject on library shelves. Each book has a unique call number, which acts as the book's address  it tells you exactly where to find the book on the shelf.
Most books in Mathematics (QA) will be found on Level B of the Olin Library.
LC call numbers divide books into classes, subclasses, topics, and subtopics.
For example, Fermat's enigma : the epic quest to solve the world's greatest mathematical problem by Simon Singh has the call number: QA244 .S55 1997.
On the book spine, the call number would appear like this:
QA
244
.S55
1997
QA 
is the class and subclass. Q is Science and QA is Mathematics.

244 
is the classification number for the subject. 244 is Higher congruences, residues. Fermat's Theorem.

.S55 
is a combination of letters and numbers that usually represents the author or publisher's name.

1997 
is the year of publication, and identifies separate editions of a text.
