19,818 reputation
31647
bio website maths.lth.se/matematiklth/…
location Lund, Sweden
age 42
visits member for 2 years, 10 months
seen 11 mins ago

Associate professor, Lund University. Research interests: several complex variables, in particular pluripotential theory.


7m
comment How to prove which number is bigger??
For b, see math.stackexchange.com/questions/7892. For a: is $10^{100}$ larger than 100?
1h
comment f(iy)=1/(y-1) , what is the set of the points M(f(z))?
What do you mean by "R - (1)"? What is M(f(z))? Please formulate a complete question, preferably pinpointing what you are having problems with.
3h
awarded  Explainer
1d
comment functions with positive real part proof
There must be some other conditions on $\varphi$.
1d
reviewed Leave Closed Simple proof that $f(x)=x^3-3(u+v)x^2+3(u^2+v^2)x-(u^3+v^3)=0$ has no integral solutions
1d
comment Simple proof that $f(x)=x^3-3(u+v)x^2+3(u^2+v^2)x-(u^3+v^3)=0$ has no integral solutions
Please don't self-vandalize your question. Even if it's been put on hold, it's very disrespectful to the answerer.
1d
revised Simple proof that $f(x)=x^3-3(u+v)x^2+3(u^2+v^2)x-(u^3+v^3)=0$ has no integral solutions
rolled back to a previous revision
1d
reviewed Reviewed Irreducibility of Polynomials in $k[x,y]$
1d
comment Finding Möbius transformations
Questions that are just copied from a textbook with no context whatsoever, or any indication what you are having problems with tend to be closed.
1d
comment Finding Möbius transformations
Oh, you actually deleted the first version. Very sneaky. But not how it should be done.
1d
comment Finding Möbius transformations
Edit your question instead of asking it again. There was a reason it was put on hold the first time around.
2d
awarded  several-complex-variables
Sep
25
comment points of differentiable in complex plane
How does this answer the question? (If I interpret you correctly, this shows that $f$ is continuous.) Also, please write $|z|$ instead of $\mod z$.
Sep
25
revised Condition for existence of a continuous function
cleaned up formatting. Removed incorrect complex-analysis tag.
Sep
24
comment Prove $\{x \in \mathbb R : f(x) \neq g(x)\}$ is a null set $\iff$ $f(x)=g(x) \ \forall \ x \in \mathbb R$ for continuous functions $f,g$ in m.s.
For a simple counterexample, just take $\lambda$ as a point mass.
Sep
24
answered Does $\lim_{x\to\infty}f(x)e^{-x^2/2}=0$ imply $\lim_{x\to\infty}f'(x)e^{-x^2/2}=0$?
Sep
23
reviewed Close Function Converts all numbers to even number?
Sep
23
reviewed Close Sizing the sample of students from a university department
Sep
23
reviewed Close Properties of a relation
Sep
23
reviewed Close Which field too choose? 'Complex Networks' or 'Deep learning'