I have a spherical vector wave for an electric field:
e[r_, \[Theta]_, \[Phi]_, t_] := (Sin[\[Theta]]/r) [ Cos[r - t] - Sin[r - t]/r]
which points in the phi direction. In mathematics, I would simply append a unit vector “phihat” to the end of the equation. Likewise for other possible components pointing in the theta and r directions. Does MMA 11 have such unit vectors?
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