For example, a company may want to study the shopping preferences of each customer to facilitate upsales.

To be sure, the epsilon-delta methods arose in part because mathematicians became unsure of the foundational validity of infinitesimals. But since nonstandard analysis exactly provides the missing legitimacy, the original motivation for adopting epsilon-delta arguments appears to fall away.

The largest mass objects in the universe are superclusters of galaxies, which have a foam-like topology with great walls closing supervoids.

The child tormented the flies by pulling their wings off.