Galois theory is the study of certain groups, known as Galois groups, that can be associated with polynomial equations. Whether or not the solutions to an equation can be written down using rational functions and square roots, cube roots, etc., depends on certain group-theoretic properties of Galois groups.
Related entry Évariste Galois
Related category GROUPS AND GROUP THEORY
Home • About • Copyright © The Worlds of David Darling • Encyclopedia of Alternative Energy • Contact