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Jan
21
comment Number of non-identity, self-inverse elements in an Abelian group of order 10
I'm not a mathematician and I fail to see how this answers the question.
Nov
10
awarded  Popular Question
Oct
15
comment Computing $\lim_{x→\infty}\ln(3x ^2 − 4x + 2) − \ln(5x ^2 + 19x − 1)$
The "swapping" of $\ln$ and $\lim$ is only allowed if the resulting limit converges, not just because $\ln$ is continuous!
Sep
3
awarded  Notable Question
Aug
8
awarded  Popular Question
Jul
29
awarded  Citizen Patrol
Jul
29
comment When I was teaching absolute function properties, I suddenly made this question …
@Khosrotash It makes people that didn't see this immediately, feel dumber than the rest.
May
27
comment Is there such a thing as complex rational numbers and does it have the same properties as the usual complex numbers as extension of the real numbers?
@AlexR Could is be used to say, define useful quantum physics, and would the limitations of the field $\mathbb{Q}(\mathrm{i})$ be in any way meaningful when interpreted physically?
May
26
asked Is there such a thing as complex rational numbers and does it have the same properties as the usual complex numbers as extension of the real numbers?
Oct
17
comment Limit of a 0/0 function
A hard requirement of the usability of l'Hôpital's rule is that the resulting "right-hand-size" is exists. But I guess that's what Hans is saying in more fancy terms?
Jul
2
awarded  Curious
Jul
2
awarded  Excavator
Jul
2
revised Finite element method for the 'Particle-In-a-Box' problem in quantum mechanics
corrected code formatting
Jul
2
suggested approved edit on Finite element method for the 'Particle-In-a-Box' problem in quantum mechanics
May
12
comment How is the multiplicity of a pole defined when square roots are involved?
Yes, of course, never cross the branch cut, but I'll need to calculate a limiting small circle integral around that point from one side of the cut to the other if I'm to avoid them, My question is more about that than the real residue which is defined differently for these points if it even exists.
May
12
revised How is the multiplicity of a pole defined when square roots are involved?
added 95 characters in body
May
12
asked How is the multiplicity of a pole defined when square roots are involved?
May
12
awarded  Informed
May
7
awarded  Caucus
Apr
11
awarded  Notable Question