Recent content by zhushualbert

  1. Z

    Graduate [help]how to obtain gravity eqution from gravity field Action S?

    Thanks so much! learning!
  2. Z

    [help]how to obtain gravity eqution from gravity field Action S?

    I kown what you said, what's important for me is the derivation from the gravity field action(Einstain-hiber action) to gravity field equation(einstain eqution). Thank you all the same!
  3. Z

    [help]how to obtain gravity eqution from gravity field Action S?

    could you please tell me how to obtain gravity equation from gravity field Action S as in detail as possible, especially the derivation of calculus of variations? or you could point out some papers for me, and thanks very very very very very very very very very much! p.s. as in detail as...
  4. Z

    Graduate [help]how to obtain gravity eqution from gravity field Action S?

    could you please tell me how to obtain gravity equation from gravity field Action S as in detail as possible, especially the derivation of calculus of variations? or you could point out some papers for me, and thanks very very very very very very very very very much! p.s. as in detail as...