Re: 2X2 arrays
- To: mathgroup at smc.vnet.net
- Subject: [mg74660] Re: 2X2 arrays
- From: dh <dh at metrohm.ch>
- Date: Fri, 30 Mar 2007 02:57:26 -0500 (EST)
- References: <eufpvj$7ee$1@smc.vnet.net>
Hi,
if I understand you correctly, then the 3 loops are actually an
additional Outer operation. You could write this as:
MatrixForm[Outer[Outer[Times, #1, #2, #3] & , {a1, a2, a3, a4},
{a1, a2, a3, a4}, {a1, a2, a3, a4}, 2]]
Daniel
simad at cse.iitkgp.ernet.in wrote:
> Hi,
>
> I am wondering how to initialize a set of 2X2 arrays in an array.
> for example:
> a1=1/Sqrt[2]{{1,1},{1,-1}}
> a2=1/Sqrt[2]{{1,0},{0,1}}
> a3=1/Sqrt[2]{{1+I,0},{0,1-I}}
> a4=1/Sqrt[2]{{1,1-I},{1,1+I}}
>
> to declare in an array so that I can compute the following.
>
> To use nested For loop to compute the tensor product.
>
> I want the equivalent of:
>
> For[i=1,i<5,i++,
> For[j=1,j<5,j++,
> For[k=1,k<5,k++,
> Print[Outer[Times,a[i],a[j],a[k]]]]]]
>
> Thanks for your sincere help,
> Sima.
>
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