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eranreches
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B.Sc in physics and mathematics, M.Sc in physics (AMO). The rest of this section is left as an exercise for the reader.

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42
Are double pendulums eventually periodic?
Oct 17, 2017
question
16
Why aren't orbitals symmetric?
Apr 8, 2015
answer
14
Why is electromagnetic wave (light) a sine wave?
Oct 22, 2017
answer
8
Momentum space calculation of observables
Nov 19, 2017
answer
8
When should I use $U=QV$ as opposed to $U=\frac{QV}2$?
Dec 27, 2017
answer
8
How is the conservation of energy formulated for electromagnetic waves?
Oct 19, 2017
answer
8
Spin statistics from the fundamental group of $SO(D)$
Dec 14, 2018
answer
5
Doubt with Relativistic Lagrangian Expression
Dec 9, 2017
answer
5
Chemical potential for ideal fermi gas with single particle energies $\epsilon_k^{\pm}=\pm \hbar c |\mathbf k|$
Dec 13, 2017
question
5
Mean-Field Theory in Second Quantization Formalism
May 5, 2019
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19
If $f(x)$ satisfies $2f (x) = f(xy) + f(x/y)$, find $f(x)$
11
How does a metric tensor describe geometry on a manifold?
11
Decompose matrix A into its symmetric and skew-symmetric parts
11
Find the general solution of the pde $𝑢𝑢_{xy} + 𝑢_𝑥𝑢_𝑦 = 0$
8
Prove that for $x\in\Bbb{R}$, $|x|\lt 3\implies |x^2-2x-15|\lt 8|x+3|$.