Randy MacDonald wrote: > Hello Raul; > > Doesn't sound to me like there's much meat in those kind of functions. It > looks like "just enough existence to be useful, like the implicit function > idea in calculus. >
I agree that implicit functions as encountered in calculus are not very useful. The main justification for including them is that they arise as solutions of separable differential equations. The implicit function theorem is very important in differential topology, however: it gives the existence of local coordinates. Best wishes, John ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
