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Re: Dot Product in Cylindrical Coordinates

No Hodge star here, but if you mean by dot product the product of their
Cartesian lengths multiplied by the Cos of the angle between them, then

<< "Calculus`VectorAnalysis`"
vcar1=CoordinatesToCartesian[{1, Pi/4, 0},Cylindrical];
vcar2=CoordinatesToCartesian[ {2, 0, 1},Cylindrical];


David Park wrote:
> 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
> From: Sergio Miguel Terrazas Porras [mailto:sterraza at]
To: mathgroup at
> 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

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