- Category theory has come to occupy a central position in contemporary mathematics and theoretical computer science, and is also applied to mathematical physics. Roughly, it is a general mathematical theory of structures and of systems of structures.
- Eagle Falls (Washington) (Wikipedia)
Eagle Falls is the uppermost waterfall on the South Fork Skykomish River in Washington. The falls are located downstream from the town of Baring and drop about 25 feet in a high volume cascade.
stanford encyclopedia of philosophy of