# episanty

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bio website location London, United Kingdom age 27 member for 2 years, 7 months seen Dec 10 at 13:55 profile views 102

BSc in Physics at the National Autonomous University of Mexico (UNAM). Currently doing an MRes+PhD at the Centre for Doctoral Training in Controlled Quantum Dynamics at Imperial College London.

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 Dec8 awarded Caucus Nov12 answered Addition in linear vector spaces Oct1 comment A simple test for degenerate eigenvalues of a holomorphic matrix-valued function? @Daniel Is there a way to obtain it directly from the matrix? Oct1 revised A simple test for degenerate eigenvalues of a holomorphic matrix-valued function? edited title Oct1 asked A simple test for degenerate eigenvalues of a holomorphic matrix-valued function? Sep24 awarded Autobiographer Aug13 comment An outrageous way to derive a Laurent series: why does this work? @mistermarko I think it is clear that the order of summation cannot be changed, as $$\sum_{n=0}^\infty n^k$$ diverges for all $k\geq 0$. Aug8 awarded Excavator Aug8 revised What does it mean to say an integral exists 'in the distributional sense'? Edited for grammar, particularly the title. This was the second google result for "in the distributional sense", so it needs some sprucing up. Aug8 suggested approved edit on What does it mean to say an integral exists 'in the distributional sense'? Jul1 revised Fourier series is to Fourier transform what Laurent series is to …? added 588 characters in body May8 awarded Yearling Apr11 comment Approximating dirac delta function with sinc functions This feels a bit circular. Isn't the integral in question the key element of the double-Fourier-transform theorem you invoke at the end? Apr10 comment Approximating dirac delta function with sinc functions Oh, yes, you are right - that's pretty subtle. You are again correct, it is cancellations and not absolute convergence that makes $K$ vanish, so it is essentially a version of the Riemann-Lebesgue lemma. I will redo that section when I have time. Apr10 comment Approximating dirac delta function with sinc functions Sorry, I didn't see that modification. You are right that the first term was incorrect. Your third term is not. Apr10 comment Approximating dirac delta function with sinc functions Yes, that is correct. Apologies. Apr10 revised Approximating dirac delta function with sinc functions deleted 10 characters in body Apr8 revised Approximating dirac delta function with sinc functions Removed brackets from QED symbol. Apr8 answered Approximating dirac delta function with sinc functions Apr2 comment How can a piece of A4 paper be folded in exactly three equal parts? And of course this has the advantage of utterly befuddling the recipient.