William S. Burnside

William S. Burnside refers to a prominent mathematician known for his contributions to group theory, particularly in the study of groups, group presentations, and Burnside's lemma, which is a fundamental result in combinatorial enumeration. Burnside's lemma, also called Burnside's theorem, provides a method to count the number of distinct configurations (or orbits) of a set under group actions, particularly useful in counting symmetrical arrangements.