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location Leipzig, Germany
age 24
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«Esprit de Géométrie»

Feel free to contact me directly, at geodude dot math at gmail.


1d
revised Determinant of Fisher information
added link
1d
asked Determinant of Fisher information
1d
asked How “far” a differential form is from an exterior product
Jul
2
awarded  Curious
Jun
30
awarded  Revival
Jun
25
revised Sufficient statistics and isometries
The actual field is information geometry, maybe someone will answer.
Jun
25
suggested suggested edit on Sufficient statistics and isometries
Jun
7
comment Wedge product of Lie algebra valued differential forms
I assume $T_\alpha T_\beta$ is the usual matrix product, so that you are talking about matrix Lie groups?
Jun
3
comment Fourier transform - epicycles.
The circle is $e^{ix}$. So $\sin x$ is the sum of two "opposite" circles: $(e^{ix}-e^{-ix})/2i$.
Jun
3
awarded  Suffrage
Jun
3
comment Is there a deeper meaning when a number is squared?
I'd say that the "squared" in kinetic energy is a matter of modulus. Every time you don't need the direction of the vector, the most natural thing to take is its square modulus. In physics, in probability, in geometry, etc.
Jun
3
revised converting kph and heading to xyz velocity vector
improved tags
Jun
3
suggested suggested edit on converting kph and heading to xyz velocity vector
Jun
3
answered Limit of the “productory”
Jun
3
revised Why is the exterior derivative called exterior derivative
added two tags for context
Jun
3
suggested suggested edit on Why is the exterior derivative called exterior derivative
Jun
3
comment Why is the exterior derivative called exterior derivative
It generalizes the gradient of a function. And Stokes' Theorem generalizes the fundamental theorem of calculus.
Jun
3
reviewed No Action Needed Best basic algebra examples to show students that proof by example is not sufficient
Jun
2
comment When to use $\times$ and $\otimes$
A "rule of thumb" can be: $\times$ adds the coordinates, while $\otimes$ multiplies them. Example: $\{(x_1,x_2,x_3)\}\times\{(y_1,y_2)\} = \{(x_1,x_2,x_3,y_1,y_2)\}$, but $\{(x_1,x_2,x_3)\}\otimes\{(y_1,y_2)\} = \{(x_1y_1,x_2y_1,x_3y_1,x_1y_2,x_2y_2,x_3y_2)\}$.
Jun
2
comment When to use $\times$ and $\otimes$
It's the difference between a Cartesian product and a tensor product. Look them up, they are similar in "spirit" but not quite the same!