This summer, battle lines were drawn over a simple math problem: 8 ÷ 2(2 + 2) = ? If you divide 8 by 2 first, you get 16, but if you multiply 2 by (2 + 2) first, you get 1. So, which answer is right?

The Rocky Mountain Journal of Mathematics, Vol. 22, No. 4 (FALL 1992), pp. 1341-1347 (7 pages) Let us say that the Borel sets of spaces X and Y multiply if each Borel set in the product space X × Y is ...

Mathematics often helps us to think about issues that don’t seem mathematical. One area that has surprisingly far-reaching applications is the theory of sets. Sets are one of the most basic objects in ...