Thank you! but this in my computer doesn't work. 

The reason is:

> with(Physics);

[`*`, `.`, Annihilation, AntiCommutator, Bra, Bracket, Check, Christoffel, Coefficients, Commutator, Coordinates, Creation, D_, Dagger, Define, Dgamma, Einstein, Expand, FeynmanDiagrams, Fundiff, GrassmannParity, Gtaylor, Intc, Inverse, Ket, KroneckerDelta, LeviCivita, Normal, Parameters, PerformOnAnticommutativeSystem, Projector, Psigma, Ricci, Riemann, Setup, Simplify, SpaceTimeVector, SubstituteTensorIndices, SumOverRepeatedIndices, TensorArray, ToFieldComponents, ToSuperfields, Trace, TransformCoordinates, Vectors, Weyl, `^`, dAlembertian, d_, diff, g_]

> Setup(mathematicalnotation = true);

but after that I see the result:

Setup(mathematicalnotation = true);[mathematicalnotation = false]

and in the programm I could't see the mixed tensors, all of the result are

g_mu,~mu,

B_nu,sigma,~sigma,g

Thank you! but this in my computer doesn't work. 

The reason is:

> with(Physics);

[`*`, `.`, Annihilation, AntiCommutator, Bra, Bracket, Check, Christoffel, Coefficients, Commutator, Coordinates, Creation, D_, Dagger, Define, Dgamma, Einstein, Expand, FeynmanDiagrams, Fundiff, GrassmannParity, Gtaylor, Intc, Inverse, Ket, KroneckerDelta, LeviCivita, Normal, Parameters, PerformOnAnticommutativeSystem, Projector, Psigma, Ricci, Riemann, Setup, Simplify, SpaceTimeVector, SubstituteTensorIndices, SumOverRepeatedIndices, TensorArray, ToFieldComponents, ToSuperfields, Trace, TransformCoordinates, Vectors, Weyl, `^`, dAlembertian, d_, diff, g_]

> Setup(mathematicalnotation = true);

but after that I see the result:

Setup(mathematicalnotation = true);[mathematicalnotation = false]

and in the programm I could't see the mixed tensors, all of the result are

g_mu,~mu,

B_nu,sigma,~sigma,g

yes, I mean the package for gravitational tensor calculation, I tried running, but failed.