RE: Dot Product in Cylindrical Coordinates

*To*: mathgroup at smc.vnet.net*Subject*: [mg69236] RE: [mg69211] Dot Product in Cylindrical Coordinates*From*: "David Park" <djmp at earthlink.net>*Date*: Sun, 3 Sep 2006 01:39:38 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Sergio, I get 2 also, using an independent calculation using differential forms and Hodge star. I think the Mathematica vector calculus package get confused between the points and the tangent vectors. David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ From: Sergio Miguel Terrazas Porras [mailto:sterraza at uacj.mx] To: mathgroup at smc.vnet.net Hello group: When I calculate the dot product of vectors {1,Pi/4,0} and {2,0,1} in Cylindrical Coordinates Mathematica 5.1 returns the result Sqrt[2], when the result should be 2. What is going on ? Thanks Sergio Terrazas