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TensorNetworks

Guides

  • TensorNetworks

Tech Notes

  • Building Tensor Networks
  • Contraction Paths and Execution
  • Matrix Product States
  • Tensor Networks Overview
  • Young Tableaux and Tensor Symmetries

Symbols

  • ActivateTensors
  • BinaryTensorNetwork
  • BinaryTensorNetworkQ
  • CanonicalPath
  • CanonicalPathQ
  • ContractIndices
  • ContractionTree
  • EinsteinSummation
  • GreedyContractionPath
  • HookFactor
  • HookLength
  • HookLengths
  • IndexedMultiply
  • InitializeTensorNetwork
  • MetricTensor
  • MetricTensorQ
  • MPSCanonicalForm
  • MPSCanonicalQ
  • MPSEntanglementEntropy
  • MPSNormalize
  • MPSNorm
  • MPSOverlap
  • MPSSchmidtValues
  • MPSTruncate
  • OptimalContractionPath
  • PartitionQ
  • PathIndexContractions
  • PathQ
  • PathToTreePath
  • RandomTensorNetwork
  • SparseTensorNetwork
  • TableauColumns
  • TableauDimension
  • TableauRows
  • TableauShape
  • TableauSize
  • TensorNetworkAdd
  • TensorNetworkContraction
  • TensorNetworkContractions
  • TensorNetworkContract
  • TensorNetworkData
  • TensorNetworkDelete
  • TensorNetworkFreeIndices
  • TensorNetworkGraphData
  • TensorNetworkGraphQ
  • TensorNetworkIndexDimensions
  • TensorNetworkIndexGraph
  • TensorNetworkIndices
  • TensorNetwork
  • TensorNetworkQ
  • TensorNetworkRemoveCycles
  • TensorNetworkReplaceIndices
  • TensorNetworkSize
  • TensorNetworkTensors
  • TensorNetworkToNetGraph
  • ToTensorNetworkGraph
  • TransposePartition
  • TreePathQ
  • TreePathToPath
  • YoungProject
  • YoungSymmetrize
  • YoungTableau
  • YoungTableauQ
Wolfram`TensorNetworks`
ActivateTensors
​
ActivateTensors
[expr]
activates
Inactive
[
TensorProduct
]
,
Inactive
[
TensorContract
]
, and
Inactive
[
Transpose
]
in
expr
, returning the evaluated tensor.
​
Details and Options
​
Examples  
(9)
Basic Examples  
(2)
Activate inactive tensor operations in an expression:
In[1]:=
A=RandomReal[{-1,1},{2,3}];​​B=RandomReal[{-1,1},{3,4}];expr=Inactive[TensorContract][Inactive[TensorProduct][A,B],{{2,3}}]
Out[1]=
TensorContract[{{0.763892,0.554565,0.0827398},{-0.806229,0.608086,-0.554211}}{{0.325347,0.756967,-0.891212,-0.140357},{-0.140566,0.417286,0.818867,0.816652},{-0.117338,-0.571961,-0.797053,0.468545}},{{2,3}}]
Evaluate the inactive expression:
In[2]:=
ActivateTensors[expr]
Out[2]=
{{0.160868,0.762329,-0.292622,0.384436},{-0.282751,-0.0395562,1.6582,0.350082}}
​
Activate a transpose of an inactive contraction:
In[1]:=
ActivateTensors[Inactive[Transpose][Inactive[TensorContract][Inactive[TensorProduct][A,B],{{2,3}}],Cycles[{{1,2}}]]]
Out[1]=
{{0.160868,-0.282751},{0.762329,-0.0395562},{-0.292622,1.6582},{0.384436,0.350082}}
Scope  
(4)

Applications  
(1)

Properties & Relations  
(2)

SeeAlso
TensorNetworkContract
 
▪
TensorNetworkContraction
 
▪
EinsteinSummation
 
▪
IndexedMultiply
 
▪
Activate
 
▪
Inactive
 
▪
Normal
TechNotes
▪
Contraction Paths and Execution
RelatedGuides
▪
TensorNetworks
""

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