### Quick description

There are many circumstances in mathematics where it is fruitful to approximate a continuous structure by a discrete one. This article gives links to articles about some of them.

To simplify a closed subset of , approximate it using a grid of cubes

5 years 40 weeksago5 years 48 weeksago5 years 49 weeksago6 years 27 weeksago6 years 47 weeksago