![[Graphics:Images/index_gr_1.gif]](Images/index_gr_1.gif){kind=small}
] can be used as input for a 4-dimensional ![[Graphics:Images/index_gr_2.gif]](Images/index_gr_2.gif){kind=small}
and is transformed into DiracGamma[LorentzIndex[![[Graphics:Images/index_gr_3.gif]](Images/index_gr_3.gif){kind=small}
]] by FeynCalcInternal (=FCI).GA[![[Graphics:Images/index_gr_4.gif]](Images/index_gr_4.gif){kind=small}
...] is a short form for GA[![[Graphics:Images/index_gr_5.gif]](Images/index_gr_5.gif){kind=small}
].GA[![[Graphics:Images/index_gr_6.gif]](Images/index_gr_6.gif){kind=small}
]. ... .
GA[] can be used as input for a 4-dimensional and is transformed into DiracGamma[LorentzIndex[]] by FeynCalcInternal (=FCI).GA[ ...] is a short form for GA[].GA[]. ... .
See also: DiracMatrix, GAD, GS.
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| The FeynCalc Book |  FVD |  GAD |
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