Suppose $G$ is a finite commutative group scheme over a ring $R$. Using Hopf-algebraic techniques, S. U. Chase has shown that the group of principal homogeneous ...

Psychological explanations of group genesis often require population heterogeneity in identity or other characteristics, whether deep (e.g., religion) or superficial (e.g., eye color). We used ...

Not only did the 2018 midterm elections run with the most heterogeneous group of candidates ever, but they successfully delivered on the promise of ushering greater diversity into U.S. politics.