MathAction SandBoxTensorProduct3

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R ==> EXPR INT

Type: Void

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e:=[subscript('e, [k]) for k in 1..3]

$\label{eq1}\left[{e_{1}}, \:{e_{2}}, \:{e_{3}}\right]$

(1)

Type: List(Symbol)

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g:=[subscript('g, [k]) for k in 1..4]

$\label{eq2}\left[{g_{1}}, \:{g_{2}}, \:{g_{3}}, \:{g_{4}}\right]$

(2)

Type: List(Symbol)

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h:=[superscript('h, [k]) for k in 1..4]

$\label{eq3}\left[{h^{1}}, \:{h^{2}}, \:{h^{3}}, \:{h^{4}}\right]$

(3)

Type: List(Symbol)

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B1:=OrderedVariableList e

$\label{eq4}\hbox{\axiomType{OrderedVariableList}\ } ([ e [ 1 ] , e [ 2 ] , e [ 3 ] ])$

(4)

Type: Type

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B2:=OrderedVariableList g

$\label{eq5}\hbox{\axiomType{OrderedVariableList}\ } ([ g [ 1 ] , g [ 2 ] , g [ 3 ] , g [ 4 ] ])$

(5)

Type: Type

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B3:=OrderedVariableList h

$\label{eq6}\hbox{\axiomType{OrderedVariableList}\ } ([ h [ ; 1 ] , h [ ; 2 ] , h [ ; 3 ] , h [ ; 4 ] ])$

(6)

Type: Type

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M1:=FreeModule(R,B1)

$\label{eq7}\hbox{\axiomType{FreeModule}\ } (\hbox{\axiomType{Expression}\ } (\hbox{\axiomType{Integer}\ }) , \hbox{\axiomType{OrderedVariableList}\ } ([ e [ 1 ] , e [ 2 ] , e [ 3 ] ]))$

(7)

Type: Type

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M2:=FreeModule(R,B2)

$\label{eq8}\hbox{\axiomType{FreeModule}\ } (\hbox{\axiomType{Expression}\ } (\hbox{\axiomType{Integer}\ }) , \hbox{\axiomType{OrderedVariableList}\ } ([ g [ 1 ] , g [ 2 ] , g [ 3 ] , g [ 4 ] ]))$

(8)

Type: Type

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M3:=FreeModule(R,B3)

$\label{eq9}\hbox{\axiomType{FreeModule}\ } (\hbox{\axiomType{Expression}\ } (\hbox{\axiomType{Integer}\ }) , \hbox{\axiomType{OrderedVariableList}\ } ([ h [ ; 1 ] , h [ ; 2 ] , h [ ; 3 ] , h [ ; 4 ] ]))$

(9)

Type: Type

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M12:=TensorProduct(R,B1,B2,M1,M2)

$\label{eq10}\hbox{\axiomType{TensorProduct}\ } (\hbox{\axiomType{Expression}\ } (\hbox{\axiomType{Integer}\ }) , \hbox{\axiomType{OrderedVariableList}\ } ([ e [ 1 ] , e [ 2 ] , e [ 3 ] ]) , \hbox{\axiomType{OrderedVariableList}\ } ([ g [ 1 ] , g [ 2 ] , g [ 3 ] , g [ 4 ] ]) , \hbox{\axiomType{FreeModule}\ } (\hbox{\axiomType{Expression}\ } (\hbox{\axiomType{Integer}\ }) , \hbox{\axiomType{OrderedVariableList}\ } ([ e [ 1 ] , e [ 2 ] , e [ 3 ] ])) , \hbox{\axiomType{FreeModule}\ } (\hbox{\axiomType{Expression}\ } (\hbox{\axiomType{Integer}\ }) , \hbox{\axiomType{OrderedVariableList}\ } ([ g [ 1 ] , g [ 2 ] , g [ 3 ] , g [ 4 ] ])))$

(10)

Type: Type

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M23:=TensorProduct(R,B2,B3,M2,M3)

$\label{eq11}\hbox{\axiomType{TensorProduct}\ } (\hbox{\axiomType{Expression}\ } (\hbox{\axiomType{Integer}\ }) , \hbox{\axiomType{OrderedVariableList}\ } ([ g [ 1 ] , g [ 2 ] , g [ 3 ] , g [ 4 ] ]) , \hbox{\axiomType{OrderedVariableList}\ } ([ h [ ; 1 ] , h [ ; 2 ] , h [ ; 3 ] , h [ ; 4 ] ]) , \hbox{\axiomType{FreeModule}\ } (\hbox{\axiomType{Expression}\ } (\hbox{\axiomType{Integer}\ }) , \hbox{\axiomType{OrderedVariableList}\ } ([ g [ 1 ] , g [ 2 ] , g [ 3 ] , g [ 4 ] ])) , \hbox{\axiomType{FreeModule}\ } (\hbox{\axiomType{Expression}\ } (\hbox{\axiomType{Integer}\ }) , \hbox{\axiomType{OrderedVariableList}\ } ([ h [ ; 1 ] , h [ ; 2 ] , h [ ; 3 ] , h [ ; 4 ] ])))$

(11)

Type: Type

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M123:=TensorProduct(R,Product(B1,B2),B3,M12,M3)

$\label{eq12}\hbox{\axiomType{TensorProduct}\ } (\hbox{\axiomType{Expression}\ } (\hbox{\axiomType{Integer}\ }) , \hbox{\axiomType{Product}\ } (\hbox{\axiomType{OrderedVariableList}\ } ([ e [ 1 ] , e [ 2 ] , e [ 3 ] ]) , \hbox{\axiomType{OrderedVariableList}\ } ([ g [ 1 ] , g [ 2 ] , g [ 3 ] , g [ 4 ] ])) , \hbox{\axiomType{OrderedVariableList}\ } ([ h [ ; 1 ] , h [ ; 2 ] , h [ ; 3 ] , h [ ; 4 ] ]) , \hbox{\axiomType{TensorProduct}\ } (\hbox{\axiomType{Expression}\ } (\hbox{\axiomType{Integer}\ }) , \hbox{\axiomType{OrderedVariableList}\ } ([ e [ 1 ] , e [ 2 ] , e [ 3 ] ]) , \hbox{\axiomType{OrderedVariableList}\ } ([ g [ 1 ] , g [ 2 ] , g [ 3 ] , g [ 4 ] ]) , \hbox{\axiomType{FreeModule}\ } (\hbox{\axiomType{Expression}\ } (\hbox{\axiomType{Integer}\ }) , \hbox{\axiomType{OrderedVariableList}\ } ([ e [ 1 ] , e [ 2 ] , e [ 3 ] ])) , \hbox{\axiomType{FreeModule}\ } (\hbox{\axiomType{Expression}\ } (\hbox{\axiomType{Integer}\ }) , \hbox{\axiomType{OrderedVariableList}\ } ([ g [ 1 ] , g [ 2 ] , g [ 3 ] , g [ 4 ] ]))) , \hbox{\axiomType{FreeModule}\ } (\hbox{\axiomType{Expression}\ } (\hbox{\axiomType{Integer}\ }) , \hbox{\axiomType{OrderedVariableList}\ } ([ h [ ; 1 ] , h [ ; 2 ] , h [ ; 3 ] , h [ ; 4 ] ])))$

(12)

Type: Type

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v1:=x*(e.1)::M1 - y*(e.3)::M1

$\label{eq13}{x \ {e_{1}}}-{y \ {e_{3}}}$

(13)

Type: FreeModule(Expression(Integer),OrderedVariableList([e[1],e[2],e[3]]))

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v2:=q*(g.2)::M2 + r*(g.4)::M2

$\label{eq14}{q \ {g_{2}}}+{r \ {g_{4}}}$

(14)

Type: FreeModule(Expression(Integer),OrderedVariableList([g[1],g[2],g[3],g[4]]))

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v3:=3*(h.1)::M3 - z*(h.3)::M3

$\label{eq15}{3 \ {h^{1}}}-{z \ {h^{3}}}$

(15)

Type: FreeModule(Expression(Integer),OrderedVariableList([h[;1],h[;2],h[;3],h[;4]]))

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t12:=tensor(v1,v2)$M12

$\label{eq16}\begin{array}{@{}l} \displaystyle {q \ x \ {{e_{1}}\otimes{g_{2}}}}+{r \ x \ {{e_{1}}\otimes{g_{4}}}}-{q \ y \ {{e_{3}}\otimes{g_{2}}}}- \ \ \displaystyle {r \ y \ {{e_{3}}\otimes{g_{4}}}}$

(16)

Type: TensorProduct?(Expression(Integer),OrderedVariableList([e[1],e[2],e[3]]),OrderedVariableList([g[1],g[2],g[3],g[4]]),FreeModule(Expression(Integer),OrderedVariableList([e[1],e[2],e[3]])),FreeModule(Expression(Integer),OrderedVariableList([g[1],g[2],g[3],g[4]])))

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t23:=tensor(v2,v3)$M23

$\label{eq17}\begin{array}{@{}l} \displaystyle {3 \ q \ {{g_{2}}\otimes{h^{1}}}}-{q \ z \ {{g_{2}}\otimes{h^{3}}}}+{3 \ r \ {{g_{4}}\otimes{h^{1}}}}- \ \ \displaystyle {r \ z \ {{g_{4}}\otimes{h^{3}}}}$

(17)

Type: TensorProduct?(Expression(Integer),OrderedVariableList([g[1],g[2],g[3],g[4]]),OrderedVariableList([h[;1],h[;2],h[;3],h[;4]]),FreeModule(Expression(Integer),OrderedVariableList([g[1],g[2],g[3],g[4]])),FreeModule(Expression(Integer),OrderedVariableList([h[;1],h[;2],h[;3],h[;4]])))

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t123:=tensor(t12,v3)$M123

$\label{eq18}\begin{array}{@{}l} \displaystyle {3 \ q \ x \ {{\left[{e_{1}}, \:{g_{2}}\right]}\otimes{h^{1}}}}-{q \ x \ z \ {{\left[{e_{1}}, \:{g_{2}}\right]}\otimes{h^{3}}}}+ \ \ \displaystyle {3 \ r \ x \ {{\left[{e_{1}}, \:{g_{4}}\right]}\otimes{h^{1}}}}-{r \ x \ z \ {{\left[{e_{1}}, \:{g_{4}}\right]}\otimes{h^{3}}}}- \ \ \displaystyle {3 \ q \ y \ {{\left[{e_{3}}, \:{g_{2}}\right]}\otimes{h^{1}}}}+{q \ y \ z \ {{\left[{e_{3}}, \:{g_{2}}\right]}\otimes{h^{3}}}}- \ \ \displaystyle {3 \ r \ y \ {{\left[{e_{3}}, \:{g_{4}}\right]}\otimes{h^{1}}}}+{r \ y \ z \ {{\left[{e_{3}}, \:{g_{4}}\right]}\otimes{h^{3}}}}$

(18)

Type: TensorProduct?(Expression(Integer),Product(OrderedVariableList([e[1],e[2],e[3]]),OrderedVariableList([g[1],g[2],g[3],g[4]])),OrderedVariableList([h[;1],h[;2],h[;3],h[;4]]),TensorProduct?(Expression(Integer),OrderedVariableList([e[1],e[2],e[3]]),OrderedVariableList([g[1],g[2],g[3],g[4]]),FreeModule(Expression(Integer),OrderedVariableList([e[1],e[2],e[3]])),FreeModule(Expression(Integer),OrderedVariableList([g[1],g[2],g[3],g[4]]))),FreeModule(Expression(Integer),OrderedVariableList([h[;1],h[;2],h[;3],h[;4]])))

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N:=TensorPower(3,R,B2,M2)

$\label{eq19}\hbox{\axiomType{TensorPower}\ } (3, \hbox{\axiomType{Expression}\ } (\hbox{\axiomType{Integer}\ }) , \hbox{\axiomType{OrderedVariableList}\ } ([ g [ 1 ] , g [ 2 ] , g [ 3 ] , g [ 4 ] ]) , \hbox{\axiomType{FreeModule}\ } (\hbox{\axiomType{Expression}\ } (\hbox{\axiomType{Integer}\ }) , \hbox{\axiomType{OrderedVariableList}\ } ([ g [ 1 ] , g [ 2 ] , g [ 3 ] , g [ 4 ] ])))$

(19)

Type: Type

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tt3:=tensor([(g.1)::M2,(g.2)::M2,(g.4)::M2])$N

$\label{eq20}{{g_{1}}\otimes{g_{2}}}\otimes{g_{4}}$

(20)

Type: TensorPower?(3,Expression(Integer),OrderedVariableList([g[1],g[2],g[3],g[4]]),FreeModule(Expression(Integer),OrderedVariableList([g[1],g[2],g[3],g[4]])))

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-- 

construct(e.1,g.1)$Product(B1,B2)::M12

   Cannot convert the value from type Product(OrderedVariableList([e[1]
      ,e[2],e[3]]),OrderedVariableList([g[1],g[2],g[3],g[4]])) to 
      TensorProduct(Expression(Integer),OrderedVariableList([e[1],e[2],
      e[3]]),OrderedVariableList([g[1],g[2],g[3],g[4]]),FreeModule(
      Expression(Integer),OrderedVariableList([e[1],e[2],e[3]])),
      FreeModule(Expression(Integer),OrderedVariableList([g[1],g[2],g[3
      ],g[4]]))) .

Tensor product of three or more different spaces:

$U\otimes V \otimes W$

where

$U=[e_1,e_2,e_3], V=[g_1,\ldots,g_4]$

and

$W=[h^1,\ldots,h^4]$

. The problem can be seen in the output of equation

In order to get the output correct how should B12 be set?

Subject: Be Bold !!

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