Stack Exchange

mrf

Lund, Sweden

http://www.maths.lth.se/matematiklth/personal/frankw/

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

top accounts reputation activity favorites subscriptions
Top Questions
Top Answers
162
math fallacy problem: $-1= (-1)^3 = (-1)^{6/2} = \sqrt{(-1)^6}= 1$?
math.stackexchange.com

106
Why isn't several complex variables as fundamental as multivariable calculus?
math.stackexchange.com

56
What does it mean to divide a complex number by another complex number?
math.stackexchange.com

46
Find all five solutions of the equation $z^5+z^4+z^3+z^2+z+1 = 0$
math.stackexchange.com

39
Nuking the Mosquito — ridiculously complicated ways to achieve very simple results
math.stackexchange.com

34
Proof of Frullani's theorem
math.stackexchange.com

28
Is there an algorithm to compute the degree of a polynomial?
math.stackexchange.com

25
Examples of mathematical induction
math.stackexchange.com

24
Automorphisms of the complex plane
math.stackexchange.com

24
What is the Fourier transform of $f(x)=e^{-x^2}$?
math.stackexchange.com

23
Calculus: a very serious L'Hopital's Rule problem
math.stackexchange.com

22
How many ways can seven people sit around a circular table?
math.stackexchange.com

19
Eigenvector and eigenvalue for exponential matrix
math.stackexchange.com

16
Can we write a complex number z like this Re(z)+Im(z)?
math.stackexchange.com

16
For every rational number, does there exist a sequence of irrationals which converges to it?
math.stackexchange.com

15
How to evaluate the sum $\frac{1}{\sqrt{n}}+\frac{1}{\sqrt{2n}}+\cdots+\frac{1}{\sqrt{n^2}}$ when $n$ grows?
math.stackexchange.com

14
If a graph with $n$ vertices and $n$ edges there must a cycle?
math.stackexchange.com

13
A really complicated calculus book
math.stackexchange.com

13
Pointwise convergence of sequences of holomorphic functions to holomorphic functions
math.stackexchange.com

13
Solve $z^4+1=0$ algebraically
math.stackexchange.com

13
'Nudging' overset characters downwards
tex.stackexchange.com

12
How to find the roots of $x^4 +1$
math.stackexchange.com

12
Multivariate Residue Theorem?
math.stackexchange.com

12
Conformal Map from Vertical Strip to Unit Disc
math.stackexchange.com

12
Why $\lim_{z\to\infty}\frac{\sin(z)}z$ doesn't exist?
math.stackexchange.com

12
Complex analysis book for Algebraic Geometers
math.stackexchange.com

11
What does it mean to show that something is well defined?
math.stackexchange.com

11
Study continuity of this function
math.stackexchange.com

11
How to Create Comparison Tables in LaTeX?
tex.stackexchange.com

10
Maximum value of a complex polynomial on the unit disk
math.stackexchange.com

1 2 3 4 5 6