By Elisabeth Egan Aaron Robertson’s grandparents had a farm in Promise Land, Tenn. In a new book, he explores the history and meaning of such utopian communities for African Americans.
For example, Propositional Dynamic Logic (PDL) can be described as a blend of three complementary classical ingredients: propositional calculus, modal logic, and the algebra of regular events ... and ...
Roy, 61, has also written the novel “The Ministry of Utmost Happiness” and such nonfiction as “The Algebra of Infinite Justice,” “Walking with the Comrades” and “The Doctor and the Saint." Scribner is ...
Inside the Battle for America’s Most Consequential Battleground State Kamala Harris and Donald Trump are pouring more money, time and energy into Pennsylvania than anywhere else, waging an ad ...