Recent content by antarctic

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    How Does WolframAlpha Calculate the Sum of (2n+1)/(n(n+1)(n+2))?

    Thank you very much for the quick answer, but: how do you get the partial sum formula? I can't seem to get that
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    How Does WolframAlpha Calculate the Sum of (2n+1)/(n(n+1)(n+2))?

    can someone please explain how to get the result WolframAlpha gets at the following link: http://www.wolframalpha.com/input/?i=sum+%282n%2B1%29%2F%28n+%28n%2B1%29+%28n%2B2%29%29 the sum is (2n+1)/(n (n+1) (n+2)) from n=1 to inf. and the result is 5/4 . Thanks.
  3. A

    Is the Determinant of a Covariant Tensor of Order 2 an Invariant of Weight 2?

    The determinant of a (0,2) tensor is a tensor density of weight 2. See, for example, page 41 of Tensors, Differential Forms, and Variational Principles by Lovelock and Rund.
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    How Does A Strain Tensor Transform?

    Hello All, I am trying to learn the theory of elasticity from Landau's book and from the very beginning I've run into trouble. As I learned it, a (0,2) tensor T_ij obeys the transformation law T_hk=T(dx_i/dx_h)(dx_j/dx_k). But I do not see how a strain tensor can be transformed in such a...
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