Partitions of unity, smooth ramps, and CW clicks

1 · John Cook · March 29, 2022, 11:45 a.m.
Partitions of unity are a handy technical device. They’re seldom the focus of attention but rather are buried in the middle of proofs. The name sounds odd, but it’s descriptive. A partition of unity is a set of smooth functions into the interval [0, 1] that add up to 1 at every point. The functions […] The post Partitions of unity, smooth ramps, and CW clicks first appeared on John D. Cook....