784 reputation
411
bio website arXiv.org
location Europe
age 48
visits member for 3 years, 3 months
seen yesterday

I'm a theoretical physicist.


Aug
22
answered Same number of independent parameters for $SO(n)$ and $O(n)$
Aug
21
comment virtual cell mirror reflections
Cross-posted from physics.stackexchange.com/q/86493/2451
Aug
15
answered non-symmetric matrix with orthogonal eigenvectors
Aug
14
revised An outrageous way to derive a Laurent series: why does this work?
Added explanation
Aug
13
revised An outrageous way to derive a Laurent series: why does this work?
Added explanation
Aug
13
answered An outrageous way to derive a Laurent series: why does this work?
Aug
9
comment How to calculate scalar product of two gradients in indicial notation?
Cross-posted to physics.stackexchange.com/q/130127/2451
Aug
5
comment How can I calculate the following integral?
Heuristic calculation for later: $f(x)-F^{\prime}(x) $$=\frac{1}{2}\sum_{n\in \mathbb{Z}\backslash \{0\}} \delta(\frac{1}{x}-n) $$=\frac{x^2}{2}\sum_{n\in \mathbb{Z}\backslash \{0\}} \delta(x-\frac{1}{n}) $$=\sum_{n\in \mathbb{Z}\backslash \{0\}} \frac{1}{2n^2}\delta(x-\frac{1}{n}).$
Aug
5
comment Is there a modern iteration of Einstein's Brownian motion theory?
Cross-posted to physics.stackexchange.com/q/129510/2451
Aug
3
comment Intuitive explanation of the difference between waves in odd and even dimensions
Related Phys.SE question: physics.stackexchange.com/q/129324/2451
Aug
3
revised How can I calculate the following integral?
added explanation
Aug
3
answered How can I calculate the following integral?
Jul
31
comment Gradient is covariant or contravariant?
Cross-posted from physics.stackexchange.com/q/126740/2451
Jul
31
comment Relation between componenet and algebraic definition of covariant vectors
Cross-posted to physics.stackexchange.com/q/126924/2451
Jul
31
comment Interpretation of $(r,s)$ tensor
Cross-posted to physics.stackexchange.com/q/128896/2451
Jul
26
comment Solve the given differential equation by using Green's function method
Cross-posted to math.stackexchange.com/q/877470/11127
Jul
26
comment Solve the given differential equation by using Green's function method
Cross-posted from physics.stackexchange.com/q/128009/2451
Jul
26
comment Fourier Transform of Poisson Equation
Cross-posted from math.stackexchange.com/q/877538/11127
Jul
26
comment Fourier transform of a laplacian
Cross-posted to physics.stackexchange.com/q/127999/2451
Jul
24
comment Question on using Leibniz formula to derive thin-film equation from Navier-Stokes
Cross-posted to physics.stackexchange.com/q/127964/2451