An identity about Killing vector field












2












$begingroup$


I am studying Kähler geometry and I started reading the lecture note and this is the first exercise (p.2).



If $X$ is a Killing vector field on a Riemannian manifold and $Y,Z$ be two vector fields, then
begin{equation}
nabla^2X(Y,Z)+R(X,Y)Z=0
end{equation}



I thought by writing everything in local coordinates would work but I really want some kind of neat proof. Can someone give some suggestion?



Thank you in advance.










share|cite|improve this question









$endgroup$

















    2












    $begingroup$


    I am studying Kähler geometry and I started reading the lecture note and this is the first exercise (p.2).



    If $X$ is a Killing vector field on a Riemannian manifold and $Y,Z$ be two vector fields, then
    begin{equation}
    nabla^2X(Y,Z)+R(X,Y)Z=0
    end{equation}



    I thought by writing everything in local coordinates would work but I really want some kind of neat proof. Can someone give some suggestion?



    Thank you in advance.










    share|cite|improve this question









    $endgroup$















      2












      2








      2





      $begingroup$


      I am studying Kähler geometry and I started reading the lecture note and this is the first exercise (p.2).



      If $X$ is a Killing vector field on a Riemannian manifold and $Y,Z$ be two vector fields, then
      begin{equation}
      nabla^2X(Y,Z)+R(X,Y)Z=0
      end{equation}



      I thought by writing everything in local coordinates would work but I really want some kind of neat proof. Can someone give some suggestion?



      Thank you in advance.










      share|cite|improve this question









      $endgroup$




      I am studying Kähler geometry and I started reading the lecture note and this is the first exercise (p.2).



      If $X$ is a Killing vector field on a Riemannian manifold and $Y,Z$ be two vector fields, then
      begin{equation}
      nabla^2X(Y,Z)+R(X,Y)Z=0
      end{equation}



      I thought by writing everything in local coordinates would work but I really want some kind of neat proof. Can someone give some suggestion?



      Thank you in advance.







      riemannian-geometry






      share|cite|improve this question













      share|cite|improve this question











      share|cite|improve this question




      share|cite|improve this question










      asked Jan 8 at 19:44









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