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Christian Blatter
ETH Zurich (Switzerland)
http://www.math.ethz.ch/~blatter
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Top Questions
23
votes
Probability that $x^2+y^2+z^2=0$ mod $p$
elementary-number-theory
asked Feb 27, 2017 at 20:34
math.stackexchange.com
18
votes
Show $|\int f(z)\, dz|\leq4$
complex-integration
asked Oct 22, 2018 at 7:59
math.stackexchange.com
8
votes
Counting pairs of multisets with prescribed discrepancy
combinatorics
asked May 28, 2018 at 17:40
math.stackexchange.com
Top Answers
158
Connection between Fourier transform and Taylor series
math.stackexchange.com
147
Intuitive interpretation of the Laplacian Operator
math.stackexchange.com
99
20 circles in the plane, all passing through the origin
math.stackexchange.com
91
Is there a clever solution to Arnold's "merchant problem"?
math.stackexchange.com
80
What should be the intuition when working with compactness?
math.stackexchange.com
65
What does the term "undefined" actually mean?
math.stackexchange.com
61
Is math built on assumptions?
math.stackexchange.com
56
Is there a vector space that cannot be an inner product space?
math.stackexchange.com
51
Examples of using physical intuition to solve math problems
mathoverflow.net
51
New Idea to prove $1+2x+3x^2+\cdots=(1-x)^{-2}$
math.stackexchange.com
49
If you break a stick at two points chosen uniformly, the probability the three resulting sticks form a triangle is 1/4. Is there a nice proof of this?
mathoverflow.net
49
Appropriate Notation: $\equiv$ versus $:=$
math.stackexchange.com
48
What is the limit of $n \sin (2 \pi \cdot e \cdot n!)$ as $n$ goes to infinity?
math.stackexchange.com
47
Representing the multiplication of two numbers on the real line
math.stackexchange.com
45
Nice proofs of $\zeta(4) = \frac{\pi^4}{90}$?
math.stackexchange.com
44
What is the importance of the Collatz conjecture?
math.stackexchange.com
44
Determine whether $f(x)={\sin x \over x}$ is uniformly continuous in $\mathbb R$
math.stackexchange.com
43
Is 1100 a valid state for this machine?
math.stackexchange.com
42
What is the remainder when $6^{273} + 8^{273}$ is divided by $49$?
math.stackexchange.com
41
Do there exist pairs of distinct real numbers whose arithmetic, geometric and harmonic means are all integers?
math.stackexchange.com
40
Nice expression for minimum of three variables?
math.stackexchange.com
39
Is there any way to define arithmetical multiplication as other thing than repeated addition?
math.stackexchange.com
38
Function satisfying $f^{-1} =f'$
mathoverflow.net
36
Mean Value Theorem for complex functions?
math.stackexchange.com
35
Why do units (from physics) behave like numbers?
math.stackexchange.com
35
Prove that $\sqrt{7}^{\sqrt{8}}>\sqrt{8}^{\sqrt{7}}$
math.stackexchange.com
34
Formal basis for variable substitution in limits
math.stackexchange.com
33
The number $2^{29}$ has exactly $9$ distinct digits. Which digit is missing?
math.stackexchange.com
33
Every harmonic function is the real part of a holomorphic function
math.stackexchange.com
33
Is there an elegant bijective proof of $\binom{15}{5}=\binom{14}{6}$?
math.stackexchange.com
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