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Christian Blatter

ETH Zurich (Switzerland)

http://www.math.ethz.ch/~blatter

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Top Questions
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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?
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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?
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47
Representing the multiplication of two numbers on the real line
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45
Nice proofs of $\zeta(4) = \frac{\pi^4}{90}$?
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44
What is the importance of the Collatz conjecture?
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44
Determine whether $f(x)={\sin x \over x}$ is uniformly continuous in $\mathbb R$
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43
Is 1100 a valid state for this machine?
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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?
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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?
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35
Why do units (from physics) behave like numbers?
math.stackexchange.com

35
Prove that $\sqrt{7}^{\sqrt{8}}>\sqrt{8}^{\sqrt{7}}$
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34
Formal basis for variable substitution in limits
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33
The number $2^{29}$ has exactly $9$ distinct digits. Which digit is missing?
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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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