Question: riemann curvature tensor maple and also need to calculate the codes ?

i) D(X,Y) , D(X,Z) ,D(Y,Z) COVARİANT DERİVATİVE ?

İİ) [X,Y] LİE OPERATOR ? 

İİİ) R(X,Y)Z = D DZ - DDZ - D[X,Y] Z

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