pregunton

Spain

Student of Physics.

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Would planets be cubic in my "cuboverse"?

physics hard-science alien-geometry nonspherical-worlds asked Aug 22, 2018 at 12:44

worldbuilding.stackexchange.com

77 votes

Does the $32$-inator exist?

abstract-algebra recreational-mathematics multilinear-algebra octonions sedenions asked Jul 22, 2022 at 21:58

math.stackexchange.com

34 votes

Quaternionic and octonionic analogues of the Basel problem

nt.number-theory analytic-number-theory elliptic-curves quaternion-algebras periods asked Sep 26, 2020 at 16:35

mathoverflow.net

24 votes

Vector spaces with fractional dimension

vector-spaces dimension-theory asked Oct 6, 2015 at 8:21

math.stackexchange.com

24 votes

Which even lattices have a theta series with this property?

nt.number-theory modular-forms lattices theta-series asked Jun 2, 2019 at 12:26

mathoverflow.net

19 votes

Is there a classification of reflection groups over division rings?

gr.group-theory rt.representation-theory division-rings reflection-groups asked Jan 6, 2020 at 8:40

mathoverflow.net

19 votes

Multiplication of doubly-infinite decimal numbers

number-systems decimal-expansion asked Sep 16, 2015 at 13:07

math.stackexchange.com

19 votes

Geometric meaning of Berezin integration

integration mathematical-physics exterior-algebra supermanifolds supergeometry asked Sep 24, 2015 at 7:51

math.stackexchange.com

18 votes

Riemann zeta function and the volume of the unit $n$-ball

complex-analysis geometry analytic-number-theory riemann-zeta spheres asked Oct 23, 2015 at 17:03

math.stackexchange.com

17 votes

Is the power of $2$ in the Euclidean norm related to the fact that the algebraic closure of the reals is $2$-dimensional?

linear-algebra number-theory measure-theory soft-question local-field asked Jan 10, 2022 at 12:38

math.stackexchange.com

Top Answers

Aritifical Gravity through Rotating wheel generalisation in a spatial 4th dimension

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Is there something special about $2016$?

math.stackexchange.com

What is this 2D division algebra?

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What specific algebraic properties are broken at each Cayley-Dickson stage beyond octonions?

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Atlas-like websites on specific areas of mathematics

mathoverflow.net

Build your own puzzle!

puzzling.stackexchange.com

Define the triple factorial, $n!!!$, as a continuous function for $n \in \mathbb{C}$

math.stackexchange.com

Atlas-like websites on specific areas of mathematics

mathoverflow.net

Translating a fiendishly exceptional automorphism of $S_6$ into a lay-math puzzle

puzzling.stackexchange.com

What are the $\sin$ and $\cos$ of discrete calculus?

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Why is $\displaystyle\int_{x=-\infty}^{x=\infty} f(x) \delta(x) \, \mathrm{d}x = f(0)$?

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Creating a wormhole connecting two universes with different spacetime metrics?

worldbuilding.stackexchange.com

Exponential of powers of the derivative operator

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Evaluation of $\exp\left(a\frac{d^2}{dx^2}\right)f(x)$

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A More Symmetric Exponentiation

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Cell decomposition for $\mathbb{C}P^n$ that has $\mathbb{R}P^n$ as a subcomplex?

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Is there a deeper reason why exponentiation is not associative?

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Bilinear Transformation

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Astronomy in a universe with two "straight" dimensions plus a highly curved dimension

worldbuilding.stackexchange.com

Looking for Regular Polygons with a Side to Diagonal ratio Equaling a Metallic Mean

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Given a "composite" norm, what polygon describes its unit ball?

math.stackexchange.com