Wolfram Language Paclet Repository
Community-contributed installable additions to the Wolfram Language
Wolfram`TensorNetworks`
IndexedMultiply  |
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Details and Options
Examples
(23)
Basic Examples
(3)
Join two matrices over a shared index:
In[1]:=
Amat={{1,1},{3,2}};Bmat={{1,0,1},{0,2,2}};
In[2]:=
IndexedMultiply[{{"i","j"},{"j","k"}},{Amat,Bmat}]
Out[2]=
{{i,j,k},{{{1,0,1},{0,2,2}},{{3,0,3},{0,4,4}}}}
Scale the columns of a matrix by a vector :
A
i,j
v
j
In[1]:=
IndexedMultiply[{{"i","j"},{"j"}},{{{10,20,30},{40,50,60}},{1,10,100}}]
Out[1]=
{{i,j},{{10,200,3000},{40,500,6000}}}
Disjoint indices give a pure outer product =:
C
i,j
u
i
v
j
In[1]:=
IndexedMultiply[{{"i"},{"j"}},{{10,20},{1,2,3}}]
Out[1]=
{{i,j},{{10,20,30},{20,40,60}}}
Scope
(16)
Applications
(2)
Properties & Relations
(2)
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