Multiplication is one of the four basic operations of arithmetic (the other being addition, subtraction, and division). Multiplication operates on the set of real numbers such that for any real numbers multiplied together, a unique real number is...

In mathematics and group theory the term multiplicative group refers to one of the following concepts, depending on the...

Sundays at the evangelical Grace Chapel megachurch look like the American ideal of race relations: African-American, Haitian, white, Chinese and Korean families sing along with a white, guitar-playing pastor.U.S. churches rarely have this kind of ethnic mix. But that's changing. Researchers who study race and...