Re: Multiply 2 Lists together in a certain way
- To: mathgroup at smc.vnet.net
- Subject: [mg26950] Re: [mg26931] Multiply 2 Lists together in a certain way
- From: BobHanlon at aol.com
- Date: Sat, 27 Jan 2001 20:00:14 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
L1 = {a,b};
L2 = { { {f,g,h}, {j,k,l} }, { {m,n,o}, {p,q,r} } };
{{{a f,a j},{b m,b p}}} == {Transpose[
Inner[Times, L1,Map[First, L2, {2}], List]]}
True
Bob Hanlon
In a message dated 2001/1/26 11:59:22 PM, BlimbaumJE at ncsc.navy.mil writes:
> I would like to multiply 2 lists together in a certain way...e.g.
>
> Suppose I have 2 lists, L1, L2 (these lists are the output of
>previous calculations):
>
>
> L1 = {a,b}
>
> L2 = { { {f,g,h}, {j,k,l} }, { {m,n,o}, {p,q,r} } }
>
>
> I want to multiply them out in such a way that i get the following
>output:
>
>
> { { {a f, a j }, {b m, b p} } }
>
>
> I have tried MapThread but the the lists are of incompatible size
>and Table..without success...so at this point i'm stuck...
>