Definition of weight $k$ Laplacian












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$begingroup$


I just found that there are two different definitions of the weight $k$ Laplacian on the complex upper half plane. In Bump's book, he defines $Delta_{k}$ as
$$
Delta_{k} = -y^{2} left( frac{partial^{2}}{partial x^{2}} + frac{partial^{2}}{partial y^{2}}right) + ikyfrac{partial}{partial x}
$$

but Wikipedia define it as
$$
Delta_{k} = -y^{2} left( frac{partial^{2}}{partial x^{2}} + frac{partial^{2}}{partial y^{2}}right) + ikyleft(frac{partial}{partial x} +i frac{partial}{partial y}right)
$$

and I found some papers that use the first one, but also find paperst that use the second one, so I'm very confused now. Which one is the right one?
I think it may depend on the context, but I'm not sure.










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$endgroup$

















    1












    $begingroup$


    I just found that there are two different definitions of the weight $k$ Laplacian on the complex upper half plane. In Bump's book, he defines $Delta_{k}$ as
    $$
    Delta_{k} = -y^{2} left( frac{partial^{2}}{partial x^{2}} + frac{partial^{2}}{partial y^{2}}right) + ikyfrac{partial}{partial x}
    $$

    but Wikipedia define it as
    $$
    Delta_{k} = -y^{2} left( frac{partial^{2}}{partial x^{2}} + frac{partial^{2}}{partial y^{2}}right) + ikyleft(frac{partial}{partial x} +i frac{partial}{partial y}right)
    $$

    and I found some papers that use the first one, but also find paperst that use the second one, so I'm very confused now. Which one is the right one?
    I think it may depend on the context, but I'm not sure.










    share|cite|improve this question









    $endgroup$















      1












      1








      1


      1



      $begingroup$


      I just found that there are two different definitions of the weight $k$ Laplacian on the complex upper half plane. In Bump's book, he defines $Delta_{k}$ as
      $$
      Delta_{k} = -y^{2} left( frac{partial^{2}}{partial x^{2}} + frac{partial^{2}}{partial y^{2}}right) + ikyfrac{partial}{partial x}
      $$

      but Wikipedia define it as
      $$
      Delta_{k} = -y^{2} left( frac{partial^{2}}{partial x^{2}} + frac{partial^{2}}{partial y^{2}}right) + ikyleft(frac{partial}{partial x} +i frac{partial}{partial y}right)
      $$

      and I found some papers that use the first one, but also find paperst that use the second one, so I'm very confused now. Which one is the right one?
      I think it may depend on the context, but I'm not sure.










      share|cite|improve this question









      $endgroup$




      I just found that there are two different definitions of the weight $k$ Laplacian on the complex upper half plane. In Bump's book, he defines $Delta_{k}$ as
      $$
      Delta_{k} = -y^{2} left( frac{partial^{2}}{partial x^{2}} + frac{partial^{2}}{partial y^{2}}right) + ikyfrac{partial}{partial x}
      $$

      but Wikipedia define it as
      $$
      Delta_{k} = -y^{2} left( frac{partial^{2}}{partial x^{2}} + frac{partial^{2}}{partial y^{2}}right) + ikyleft(frac{partial}{partial x} +i frac{partial}{partial y}right)
      $$

      and I found some papers that use the first one, but also find paperst that use the second one, so I'm very confused now. Which one is the right one?
      I think it may depend on the context, but I'm not sure.







      automorphic-forms






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      asked Jan 18 at 1:44









      Seewoo LeeSeewoo Lee

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