Ivan Shishkin, The Forest Clearing

Profile

visitor

Research-level / reputation 706

moderator

Liked problems

\sum \frac{1}{p}

Asymptotic links between

x_n^n

n\left(1-x_n\right)

0.999999 \ldots=1

A powerful equation, 2 Simultaneous triangularization over

\operatorname{GL}_n\left(\mathbb{F}_p\right)

An inequality Existence of a norm A pretty recurrence for the primes No linear recurrence for the primes Eisenstein’s criterion Finite subgroups of

\mathrm{GL}_{n}(\mathbb{Z})

The birthday problem An ODE of arbitrary order Wilson on steroids

\cos(r\pi) \in \mathbb{Q}

?Examples of singletons A matrix whose determinant is the product of the

\ell^1

-norms of its columns A Diophantine equation An easy addition Every hyperplane of

\mathcal{M}_n(\mathbb{C})

meets an invertible matrix Matrices invertible over

\mathbb{Z}

Rational values of

\tan(r\pi)

Lemme de Serre^FR Path components of

\mathrm{GL}_n(\mathbb{R})

Product of three consecutive positive integers Inception aux oraux de l’ENS : Permutation de permutation^FR A functional equation Convergence of

\left(e^{i n \theta}\right)_{n \in \mathbb{N}}

Definitions of the floor function Uniqueness of the limit My first odd functions From a function series to

\ln(2)

Convexité et connexité par arcs^FR Matrices orthogonales à coefficients positifs^FR Inégalité d’Hadamard^FR Des exemples du théorème des restes chinois ?^FR Legendre formula for the factorial The missing coin Racines des polynômes de Taylor du sinus^FR Somme d’inverse et nombre premier^FR Hahn-Banach Theorem in finite dimension Les idéaux de

M_{n}(K)

\text{Aut}^{n}(G)

est trivial^FR Les sous-groupes finis de

\mathrm{SL}_{2}(\mathbb{Z})

sont de cardinal

1,2,3,4

6.

^FR Group with all elements of order 2 Powers of integer matrices An equation solvable by radicals ?Degré de l’extension

\mathbb{R}/\mathbb{Q}

^FR Determinant of a block matrix = determinant of a 2×2 matrix ?Sequences whose terms are getting closer and closer