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typo in docu of fourth order unit tensor (SymmetricTensor<4, dim, Number> identity_tensor()) #13145

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Dec 30, 2021
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typo in docu of fourth order unit tensor (SymmetricTensor<4, dim, Number> identity_tensor()) #13145

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2 changes: 1 addition & 1 deletion include/deal.II/base/symmetric_tensor.h
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Expand Up @@ -99,7 +99,7 @@ DEAL_II_CONSTEXPR inline DEAL_II_ALWAYS_INLINE SymmetricTensor<4, dim, Number>
* In index notation, we can write the general form
* \f[
* \mathcal{I}_{ijkl} = \frac 12 \left( \delta_{ik} \delta_{jl} +
* \delta_{il} \delta_{jl} \right).
* \delta_{il} \delta_{jk} \right).
* \f]
* To see why this factor of $1 / 2$ is necessary, consider computing
* $\mathbf A= \mathbb I : \mathbf B$.
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