BowenPing/STensor | Paclet Repository

BowenPing`STensor`

CreateTensor

CreateTensor[sym,rank]
	creates a tensor of symbol sym. rank is a two-integer list gives length of sup indices and sub indices.

CreateTensor[sym,rank,crds]
	crds list gives the coordinate system.

CreateTensor[sym,rank,crds,components]
	components gives the components array.

CreateTensor[sym,rank,crds,components,metric]
	metric gives the corresponding metric of this tensor.

CreateTensor[inf,IsMetricTrue]
	inf is the argument sequence as above. IsMetric->True means the tensor is a metric itself.

Examples

(4)

Basic Examples

(1)

Create a STensor object will be like:

In[1]:=

T=

CreateTensor

["T",{2,1}]

Out[1]=

STensor

Symbol: T

Rank: {2,1}



Indices will be added like this:

In[2]:=

T["ab","c"]

Out[2]=

STensor

Symbol: T

Rank: {2,1}

[ab,c]

Create a tensor with coordinate system and components:

In[3]:=

S=

CreateTensor

["S",{1,2},{x,y},Array[Subscript["s",##]&,{2,2,2}]]

Out[3]=

STensor

Symbol: S

Rank: {1,2}



Options

(3)



SeeAlso

STensor

▪

RiemannTensor

RelatedGuides

▪

Get Started

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