List questions from mathematical-physics

Published on 05 Apr 2020 - 10:33

167

Views

How to prove that $u(r)=k \frac{1}{r}$ is the only solution for the integral equation $\int_{V'}\rho'\ u(r)\ dV' = constant$?

Published on 25 Mar 2026 - 12:28

452

Views

Euler-Lagrange equations using tensor calculus

Published on 29 Mar 2026 - 16:54

74

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Is there characterization of critical points of the electric potential function?

Published on 28 Mar 2026 - 10:04

294

Views

Calculating moment of inertia by integration

Published on 11 Apr 2020 - 12:58

889

Views

Integrating "moment of inertia" of a fidget-spinner-shape

Published on 11 Apr 2020 - 15:02

62

Views

Testing a solution of a vector-valued differential equation

Published on 25 Mar 2026 - 19:01

69

Views

Find $t_1>0$ such that $\vec{r^1}(t_1)=\vec{r^2(t_1)}$

Published on 28 Mar 2026 - 8:42

94

Views

Comparing the frequency scaling between two Fourier transforms

Published on 14 Apr 2020 - 17:32

168

Views

How to justify interchanging the integral with the quantization operator?

Published on 27 Mar 2026 - 20:30

199

Views

How to obtain the position vector in terms of curvilinear unit vectors

Published on 30 Mar 2026 - 10:13

348

Views

cross product between two vectors

Published on 26 Mar 2026 - 20:26

68

Views

Solving non-linear recurrence for solving infinite ladder circuit

Published on 17 Apr 2020 - 18:11

716

Views

Nielsen & Chuang, exercise 2.73 — Density matrix proving the minimum ensemble

Published on 29 Mar 2026 - 6:29

64

Views

Is there a practical formula for quantization on arbitrary subsets of $\mathbb{R}^n$

Published on 27 Mar 2026 - 19:55

List Question

What does the symbol ⌒ mean?

How to prove that $u(r)=k \frac{1}{r}$ is the only solution for the integral equation $\int_{V'}\rho'\ u(r)\ dV' = constant$?

Euler-Lagrange equations using tensor calculus

Is there characterization of critical points of the electric potential function?

Calculating moment of inertia by integration

Integrating "moment of inertia" of a fidget-spinner-shape

Testing a solution of a vector-valued differential equation

Find $t_1>0$ such that $\vec{r^1}(t_1)=\vec{r^2(t_1)}$

Comparing the frequency scaling between two Fourier transforms

How to justify interchanging the integral with the quantization operator?

How to obtain the position vector in terms of curvilinear unit vectors

cross product between two vectors

Solving non-linear recurrence for solving infinite ladder circuit

Nielsen & Chuang, exercise 2.73 — Density matrix proving the minimum ensemble

Is there a practical formula for quantization on arbitrary subsets of $\mathbb{R}^n$

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