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Christian Blatter

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Name	Christian Blatter
Member for	2 years
Seen	Mar 3 at 16:10
Website	math.ethz.ch/~blatter
Location	ETH Zurich (Switzerland)
Age	77

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Examples of using physical intuition to solve math problems

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 fact?

Function satisfying $f^{-1} =f'$

A Book You Would Like to Write

How many edge-disjoint paths go from upper left to lower right in a $4 \times N$ rectangular gridwork of streets?

How are these two ways of thinking about the cross product related?

Walking around Santa Cruz, track around the soccer field

Generalization of Curl to higher dimensions

This limit converges to the partial derivative?

Efficient algorithm for finding the minima of a piecewise linear function

How many “different” colorings (excluding exchanges) exist for a given map (graph)?

Most intricate and most beautiful structures in mathematics

Is the notion of fractional dimension compatible with considering a dimension a set of n-tuples?

Volume of Minkowski sum of a ball and an ellipsoid

Characterization of the Poisson law

How do you calculate the solid angle of a rectangular, axis aligned section of a surface defined by a two dimensional function?

Explicit example of a smooth - but not analytic- closed curve without self-intersections

product of two riemann integrable is riemann integrable

Finding an appropriate Riemannian metric $G:\mathbb{R}^3\rightarrow\mathbb{R}^{3\times{3}}$ on $\mathbb{R}^3$

Interesting applications (in pure mathematics) of first-year calculus

Why fourier transform tell us energy of any frequency of f(t)

Help me with this proof: Drop a printed map of the land on the land and there must be some common point.

Newton equations, second order equation and (im)possible motions

Advantages of the sequence definition of limits

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