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Ricci Calculus kronecker delta

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#matrices #tensors #kronecker-delta
362
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Multiplication with discrete delta function

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#dirac-delta #kronecker-delta #discrete-time
252
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Prove that $ \delta _{ik} \delta _{kj} = \delta _{ij} $

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#linear-algebra #kronecker-delta
45
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Why is $a^i_jA^j_k=\delta^i_ka$ valid

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#linear-algebra #determinant #tensors #index-notation #kronecker-delta
333
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How to simplify Kronecker delta with einstein summation?

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#linear-algebra #vector-spaces #cross-product #kronecker-delta
79
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How are indices written and managed when working with matrices and tensors?

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#linear-algebra #matrices #tensors #kronecker-delta
87
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Kronecker delta in multivariate Taylor expansion

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#summation #index-notation #kronecker-delta
191
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Evaluate: $\sum\limits_{n\ge1}\sum\limits_{m\ge0}\sum\limits_{k=0}^{n-1}\frac{y^nm^k(-n)^m\delta_{k+m-n+1}}{(k+m-n+1)!\Gamma(n-k)k!n}$

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#real-analysis #limits #hypergeometric-function #tetration #kronecker-delta
19
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Indices without a given domain in sum notation.

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#matrices #systems-of-equations #matrix-equations #kronecker-delta
61
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Simplify Ricci tensor

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#riemannian-geometry #curvature #general-relativity #kronecker-delta
106
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Proof of the relation between $SO(3)$ generators and their Lie braket

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#permutations #lie-groups #lie-algebras #tensors #kronecker-delta
30
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Fourier Transform of continuous time limit mimicking Kronecker Delta

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#fourier-transform #kronecker-delta
93
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Can the convolution of two complex sequences be a Kronecker delta?

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#sequences-and-series #probability-distributions #complex-numbers #convolution #kronecker-delta
21
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Complex sequence convoluted with (almost) itself is Kronecker delta

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#sequences-and-series #complex-numbers #convolution #kronecker-delta
44
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How to make sense of a summation containing kronecker delta?

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#kronecker-delta #kronecker-symbol

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