[Pw_forum] Coordinate transorms: Crystal to Cartesian and back

[Stefano Baroni]

all in all, a "N vector" is nothing but a [Nx1] matrix. Its transpose  
(YES! it is well defined) is a [1xN] matrix. SB

On May 26, 2009, at 6:58 AM, Huiqun Zhou wrote:

> Kostyantyn，
>
> The rule for transpose operation applies to not only the product of  
> matrices, but also the
> product of a matrix and a vector.
>
> I believe Gabriele is right.
>
>
> Huiqun Zhou
> @Earth Sciences, Nanjing University, China
>
> 2Gabriele: I beleive there is a mistake in your first step. When you  
> start with v_cart = A*v_cryst, you try to use the property (C*D)' =  
> D' * C', which is true for the product of two matrices. In our case  
> we have a product of matrix A and vector v_cryst. So you will get  
> v_cart' = v_cryst' * A
>
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---
Stefano Baroni - SISSA  &  DEMOCRITOS National Simulation Center -  
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