Question

Levi-Civita and and Kronecker delta identity

score 467 · Answer 1 · 2021-10-12 21:55:56

467

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Levi-Civita and and Kronecker delta identity

Published on 12 Oct 2021 - 21:55

score 52 · Answer 2 · 2021-11-15 01:14:55

52

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Is there an expression for $i, j, k \in \left\{1,\, 2,\, 3\right\}$ with $i \neq j \neq k$?

Published on 15 Nov 2021 - 1:14

score 162 · Answer 3 · 2021-12-13 07:06:35

162

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Matrix written in terms of Kronecker delta

Published on 13 Dec 2021 - 7:06

score 48 · Answer 4 · 2021-12-28 16:10:28

48

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Sum Simplification

Published on 28 Dec 2021 - 16:10

score 57 · Answer 5 · 2022-04-02 08:57:03

57

Views

Prove that $\delta_{jl}\delta_{im}=\delta_{jm}\delta_{il}$

Published on 02 Apr 2022 - 8:57

score 115 · Answer 6 · 2022-04-28 22:35:45

115

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How do I simplify $\delta_{ij} \delta^{jk}$?

Published on 28 Apr 2022 - 22:35

score 30 · Answer 7 · 2022-06-02 20:41:31

30

Views

Tensor calculus: problem with second order delta systems property

Published on 02 Jun 2022 - 20:41

score 39 · Answer 8 · 2022-07-14 15:44:32

39

Views

Expression with Kronecker Delta over upper triangular Matrix

Published on 14 Jul 2022 - 15:44

score 29 · Answer 9 · 2022-07-14 17:39:11

29

Views

Expression with Triple Sum of Kronecker Delta

Published on 14 Jul 2022 - 17:39

score 43 · Answer 10 · 2022-07-28 11:07:55

43

Views

Volume integral over dyadic: Is it true that $\int_{\mathbb{R}^3} d^3 \vec{x}\; x_i x_j f(|\vec{x}|) \ \propto \ \delta_{ij}$?

Published on 28 Jul 2022 - 11:07

score 396 · Answer 11 · 2022-10-12 04:38:13

396

Views

Is the type $(1,1)$ Kronecker delta tensor, $\delta_a^{\,\,b}$ equal to the trace of the identity matrix or always $1$ when $a=b$ and zero otherwise?

Published on 12 Oct 2022 - 4:38

score 174 · Answer 12 · 2022-10-14 00:11:19

174

Views

Alternate multinomial theorem for $\frac{d^n}{dx^n}\prod\limits_{k=1}^m f_k(x)$ without $\sum\limits_{k_1+\dots+k_m=n}$ nor Kronecker delta.

Published on 14 Oct 2022 - 0:11

score 36 · Answer 13 · 2022-10-17 13:49:29

36

Views

Why $a_i b_m c_n\left(\delta_{m k} \delta_{n i}-\delta_{m i} \delta_{n k}\right) \mathbf{e}_k=a_n b_m c_n \mathbf{e}_m-a_m b_m c_n \mathbf{e}_n$?

Published on 17 Oct 2022 - 13:49

score 35 · Answer 14 · 2022-11-08 07:31:36

35

Views

Simplify recursive equation $h(n) = \alpha h(n-1) + (1-\alpha)\delta(n)$

Published on 08 Nov 2022 - 7:31

score 38 · Answer 15 · 2022-11-18 06:05:47

38

Views

Summation in closed form

Published on 18 Nov 2022 - 6:05

List Question

Levi-Civita and and Kronecker delta identity

Is there an expression for $i, j, k \in \left\{1,\, 2,\, 3\right\}$ with $i \neq j \neq k$?

Matrix written in terms of Kronecker delta

Sum Simplification

Prove that $\delta_{jl}\delta_{im}=\delta_{jm}\delta_{il}$

How do I simplify $\delta_{ij} \delta^{jk}$?

Tensor calculus: problem with second order delta systems property

Expression with Kronecker Delta over upper triangular Matrix

Expression with Triple Sum of Kronecker Delta

Volume integral over dyadic: Is it true that $\int_{\mathbb{R}^3} d^3 \vec{x}\; x_i x_j f(|\vec{x}|) \ \propto \ \delta_{ij}$?

Is the type $(1,1)$ Kronecker delta tensor, $\delta_a^{\,\,b}$ equal to the trace of the identity matrix or always $1$ when $a=b$ and zero otherwise?

Alternate multinomial theorem for $\frac{d^n}{dx^n}\prod\limits_{k=1}^m f_k(x)$ without $\sum\limits_{k_1+\dots+k_m=n}$ nor Kronecker delta.

Why $a_i b_m c_n\left(\delta_{m k} \delta_{n i}-\delta_{m i} \delta_{n k}\right) \mathbf{e}_k=a_n b_m c_n \mathbf{e}_m-a_m b_m c_n \mathbf{e}_n$?

Simplify recursive equation $h(n) = \alpha h(n-1) + (1-\alpha)\delta(n)$

Summation in closed form

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