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Please, would you give me a hand with this program?

Si scriva una procedura in Sage che calcoli al variare dell'intero n>=2 la dimensione del sottospazio vettoriale W di End(Mn(R)) costituito da tutte e sole le applicazioni lineari F(A;B) : Mn(R) --> Mn(R) del tipo F(A;B) : X |----> AX + XB al variare di A e B in Mn(R).

Please help me.

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No.2 Revision

Please, would you give me a hand with this program?

Si scriva una procedura in Sage che calcoli al variare dell'intero n>=2 la dimensione del sottospazio vettoriale W di End(Mn(R)) costituito da tutte e sole le applicazioni lineari F(A;B) : Mn(R) --> Mn(R) del tipo F(A;B) : X |----> AX + XB al variare di A e B in Mn(R).

Please help me.

Edit: tentative translation:

Write a procedure in Sage which computes, according to the integer n >= 2, the dimension of the vector subspace W of End(Mn(R)) consisting exactly of the linear applications F(A; B) : Mn(R) --> Mn(R) of type F(A; B) : X |----> AX + XB, for all A and B in Mn(R).

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No.3 Revision

Please, would you give me a hand with this program?

Si scriva una procedura in Sage che calcoli al variare dell'intero n>=2 la dimensione del sottospazio vettoriale W di End(Mn(R)) costituito da tutte e sole le applicazioni lineari F(A;B) : Mn(R) --> Mn(R) del tipo F(A;B) : X |----> AX + XB al variare di A e B in Mn(R).

Please help me.

Edit: tentative translation:translation contributed by @daniele:

Write a procedure function in Sage which computes, according to the integer n >= 2, that computes the dimension of the vector subspace W subspace WEnd(Mn(R)) constructed as following: W consists of End(Mn(R)) consisting exactly of the linear applications F(A; B) maps F(A;B):Mn(R)Mn(R) such that $F(A;B) : Mn(R) --> Mn(R) of type F(A; B) : \colon X |----> \mapsto AX + XB, for all A and B XBwithA,B$ in Mn(R).Mn(R). Here, n2.

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No.4 Revision

Please, would you give me Dimension of a hand with this program?certain subspace of a matrix space

Si scriva una procedura in Sage che calcoli al variare dell'intero n>=2 la dimensione del sottospazio vettoriale W di End(Mn(R)) costituito da tutte e sole le applicazioni lineari F(A;B) : Mn(R) --> Mn(R) del tipo F(A;B) : X |----> AX + XB al variare di A e B in Mn(R).

Please help me.

Edit: translation contributed by @daniele:

Write a function in Sage that computes the dimension of the vector subspace WEnd(Mn(R)) constructed as following: W consists of linear maps F(A;B):Mn(R)Mn(R) such that F(A;B)::XAX+XB with A, B in Mn(R). Here, n2.