Research suggests that about a third of women with DIV will get better after treatment; about a third of women will be better but may have a relapse of their symptoms, and about a third of …

It is possible to obtain general expressions for grad, div and curl in any orthogonal curvilinear co-ordinate system by making use of the h factors which were introduced in Lecture 4.

Grad, Div and Curl in Cylindrical and Spherical Coordinates essions for the operations of vector analysis are different in different

where we formally take advantage of the two argument arctan function to eliminate quadrant confusion. The unit vectors in the cylindrical coordinate system are functions of position.

It’s an impressive book but I’m pretty sure that, for many, the main selling point is that it has these expressions for div, grad and curl in cylindrical and polar coordinates printed on the inside …

Much of this lecture is based on material in the excellent text (pamphlet) “Div, grad, curl and all that”, by H. M. Schey. This 150 page easy-to-read book is one of my personal favorite math texts.

The vector field F : A −→ R 3 is called rotation free if the curl is zero, curl F = 0, and it is called incompressible if the divergence is zero, div F = 0.