Re: Permute in KroneckerProduct
- To: mathgroup at smc.vnet.net
- Subject: [mg119238] Re: Permute in KroneckerProduct
- From: Michael Weyrauch <michael.weyrauch at gmx.de>
- Date: Wed, 25 May 2011 19:33:50 -0400 (EDT)
- References: <irijlf$qb7$1@smc.vnet.net>
Hello,
to be specific assume the subsystems A and B are represented by
n x n matrices.
c=KroneckerProduct[A,B]
then
KroneckerProduct[B, A] =
Flatten[Partition[c, {n, n}], {{3, 1}, {4, 2}}]
(I hope I understood your question correctly. )
If you want to handle
any tensor rearrangement and contraction then Partition, Flatten, and
Dot are very good friends.
Viel Spa=DF bei der Arbeit...
Michael Weyrauch
Am 25.5.2011 11:54, schrieb Dominic W=F6rner:
> Hi,
>
> I construct a system out of subsystems with same dimensions using KroneckerProduct.
> Then the system is represented as a big matrix. But now I need to rearange the subsystems in a different order. Any advice for the algorithm to permute given subsystem A with subsystem B?
>
> Cheers,
> Dominic
>