Association schemes constitute a unifying framework in algebraic combinatorics, encoding symmetric relations on a finite set through a partition of ordered pairs into classes that satisfy regularity ...

Algebraic geometry and number theory intersect in the study of solutions to polynomial equations and their symmetries. Algebraic geometry provides a language of schemes and varieties to capture ...

The drive to get every student to take so-called college gateway courses has succeeded, a new federal study finds, but students taking Algebra 1 and Geometry classes are getting considerably less ...