STUDENTS of ordinary endowment form the habit of observing things before words. The author of this work has therefore wisely begun with the notions of velocity and gradient of a curve before ...
At the end of the concrete plaza that forms the courtyard of the Salk Institute in La Jolla, California, there is a three-hundred-fifty-foot drop to the Pacific Ocean. Sometimes people explore that ...
The study of Lagrangian equations and gradient estimates occupies a critical niche at the intersection of partial differential equations, differential geometry, and variational calculus. Lagrangian ...