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Revival

Answer more than 30 days after a question was asked as first answer scoring 2 or more. This badge can be awarded multiple times.

Awarded 6804 times.

What do you call a map of spaces which is weakly left orthogonal to all $n$-connected maps?

Awarded 4 hours ago

Tim Campion

67.8k13 gold badges159 silver badges428 bronze badges

Definition of the supertrace in superalgebra representations

Awarded yesterday

Alistair Savage

6484 silver badges12 bronze badges

D-finiteness of Hilbert series of non-commutative invariant ring under reductive group

Awarded yesterday

Karthik

239 bronze badges

Are there any other norms besides cut norm defined on graphon?

Awarded 2 days ago

opq

364 bronze badges

Prove that except for $n=1$, there are more topologies of size $n$ than groups of order $n$

Awarded 2 days ago

Carlo Beenakker

208k19 gold badges515 silver badges740 bronze badges

Have the affine simplicial line arrangments been enumerated?

Awarded Mar 27 at 12:13

smanecke

614 bronze badges

Why has the random Koopman matrix $ G_{xx}^{(-)} G_{yx} $ only eigenvalues on the complex unit circle?

Awarded Mar 27 at 8:18

Christopher Sorg

1116 bronze badges

Optimal strategy in a selection game

Awarded Mar 26 at 15:53

RaffaeleScandone

5014 silver badges14 bronze badges

Local conjugacy class of measure preserving transformations

Awarded Mar 26 at 10:53

Christopher Sorg

1116 bronze badges

Is there a bicyclic irregular pentagon in integers?

Awarded Mar 26 at 2:34

Ralph Beckmann

611 silver badge3 bronze badges

Name of a specific lattice

Awarded Mar 26 at 2:23

Mare

28.5k7 gold badges26 silver badges119 bronze badges

Alphabet size for not admitting an arithmetically constant subsequence

Awarded Mar 25 at 17:36

Jarosław Błasiok

1,5709 silver badges15 bronze badges

The dual group of a G-variety

Awarded Mar 25 at 15:07

R. Chen

4312 silver badges8 bronze badges

Progress towards Selberg's conjecture A

Awarded Mar 25 at 12:03

Wojowu

35.6k4 gold badges134 silver badges230 bronze badges

Are all complex zeros of $\Psi^{(s)}(1) \pm \Psi^{(1-s)}(1)$ on the critical line?

Awarded Mar 25 at 11:49

Pierre-Aubry Simon

25612 bronze badges

Apéry series for $\zeta(3)$

Awarded Mar 25 at 4:53

Mohamed Cheddadi

1711 silver badge3 bronze badges

Residue class sufficiency sets for the Collatz conjecture

Awarded Mar 24 at 18:51

Robert Frost

4465 silver badges20 bronze badges

Portability of Thompson theorem about solvability to Moufang loops

Awarded Mar 24 at 8:56

Taras Banakh

46k5 gold badges89 silver badges223 bronze badges

Is $\mathcal{B}(\mathcal{H})$ a groupoid $C^*$-algebra?

Awarded Mar 24 at 5:47

Luiz Felipe Garcia

1,70710 silver badges21 bronze badges

Definition of formal group functors

Awarded Mar 23 at 18:20

Joshua Mundinger

2,61915 silver badges34 bronze badges

Are there integers $x,y,z$ such that $1 + x - x^3 + x^2 y^2 + z + z^2 = 0$?

Awarded Mar 23 at 15:41

Eugene Go

4014 silver badges8 bronze badges

Are there integers $x,y,z$ such that $(x+1)y^2-xz^2=x^3+2x+2$?

Awarded Mar 23 at 14:05

Eugene Go

4014 silver badges8 bronze badges

Has there been progress on Hamiltonicity in 4-connected claw-free graphs with a constant maximum degree?

Awarded Mar 23 at 9:11

Licheng Zhang

2,13111 silver badges21 bronze badges

A series related to $\log192-\sqrt{3}\pi$

Awarded Mar 23 at 0:17

Pierre-Aubry Simon

25612 bronze badges

Principal ideals under integral closure

Awarded Mar 22 at 9:55

abx

39.8k3 gold badges93 silver badges155 bronze badges

A generalization of the Sawayama-Thebault theorem

Awarded Mar 20 at 13:21

Nono

462 bronze badges

Coherence laws when composing 2-monads

Awarded Mar 20 at 11:31

varkor

12.9k36 silver badges86 bronze badges

Possible error in Lossy joint source-channel coding in the finite blocklength regime paper by Kostina and Verdu

Awarded Mar 18 at 15:51

Information_Theorist

616 bronze badges

Olympiad inequality as a generalizing result due at the origin to Vasile Cirtaoje

Awarded Mar 18 at 8:38

Max Alekseyev

39.4k5 gold badges85 silver badges170 bronze badges

Deciding whether rational periodic external rays of the Mandelbrot set land on primitive or satellite components

Awarded Mar 17 at 2:31

Lasse Rempe

6,7551 gold badge30 silver badges49 bronze badges

Decay rate of measures on Cantor set

Awarded Mar 15 at 17:17

Lavender

2414 silver badges9 bronze badges

Coarse-graining a hypergraph

Awarded Mar 14 at 22:11

domotorp

19.9k3 gold badges66 silver badges141 bronze badges

Cross-ratio for projective lines over division rings

Awarded Mar 14 at 12:06

Taras Banakh

46k5 gold badges89 silver badges223 bronze badges

Does multitape Turing machine correctly model my laptop in terms of time-space tradeoff?

Awarded Mar 13 at 18:23

usul

5,14428 silver badges34 bronze badges

Flat base change in the complex analytic setting

Awarded Mar 12 at 13:17

Doug Liu

8675 silver badges11 bronze badges

Masas in SAW*-algebras

Awarded Mar 12 at 8:48

Tomasz Kania

12.4k2 gold badges43 silver badges82 bronze badges

Picard-Fuchs equation, Schwarzian derivative and Bers embedding of Teichmuller Space

Awarded Mar 9 at 16:19

Amir

212 bronze badges

Constructing Ramanujan graphs from elliptic curves

Awarded Mar 7 at 19:34

Igor Rivin

98k12 gold badges164 silver badges383 bronze badges

Is 136 a difference of two rational fourth powers?

Awarded Mar 7 at 15:08

Bogdan Grechuk

9,3132 gold badges40 silver badges77 bronze badges

Is Fontaine-Laffaille theory compatible with reduction mod $p$?

Awarded Mar 7 at 11:27

Pavel Čoupek

1,1471 gold badge7 silver badges16 bronze badges

Are the iterated centroids of a hexagon collinear with a distance ratio approaching $1/2$?

Awarded Mar 6 at 22:37

Jack Edward Tisdell

2,0171 gold badge7 silver badges26 bronze badges

Is this a known property of ultrafilters?

Awarded Mar 5 at 18:42

FD_bfa

4626 silver badges16 bronze badges

Reference request: right local semirings

Awarded Mar 5 at 15:53

Moritz Firsching

11.1k3 gold badges66 silver badges92 bronze badges

About path-connected components of the Bohr compactification of $\mathbb{R}^d$

Awarded Mar 4 at 22:31

Daron

2,11812 silver badges27 bronze badges

Fields of nimbers below $\omega^{\omega^\omega}$

Awarded Mar 3 at 23:53

ViHdzP

6773 silver badges16 bronze badges

Published reference on the automorphism group of modular curves $X_1(N)$?

Awarded Mar 3 at 23:06

Pete L. Clark

66.9k13 gold badges252 silver badges386 bronze badges

Regularity of the Leray projection on the diffeomorphism group

Awarded Mar 3 at 9:30

Aymeric Martin

3251 silver badge8 bronze badges

Riemannian submanifolds of $2$-Wasserstein space

Awarded Mar 2 at 13:11

Gabe K

6,5532 gold badges34 silver badges68 bronze badges

Introduction to free boundary problems (that are not Stefan problems)

Awarded Feb 26 at 6:16

BO Chen

212 bronze badges

Coloring for arithmetic progressions with 2-power difference restricted to a set of numbers

Awarded Feb 24 at 10:21

Gábor Damásdi

364 bronze badges

Linear logic with storage preserving positives

Awarded Feb 23 at 10:26

Paulo Oliva

2062 silver badges3 bronze badges

Can the finiteness of a Burnside group with two generators be checked algorithmically by using Fuchsian von Dyck groups?

Awarded Feb 20 at 13:41

HJRW

26.2k3 gold badges75 silver badges154 bronze badges

On the trajectory followed by a point P on a planar convex region C when P is mapped repeatedly to the farthest point to it on C

Awarded Feb 18 at 17:06

Jukka Kohonen

4,9033 gold badges26 silver badges53 bronze badges

Tannakian reconstruction over non-fields

Awarded Feb 18 at 16:17

David Corwin

16.2k11 gold badges89 silver badges131 bronze badges

Are there an infinite number of twin semiprimes?

Awarded Feb 17 at 23:28

Timothy Chow

91.7k30 gold badges408 silver badges652 bronze badges

Why is the rationality of the Poincaré series important in commutative algebra?

Awarded Feb 17 at 14:58

Vladimir Dotsenko

18.3k2 gold badges60 silver badges126 bronze badges

How are problems about number fields reduced to problems about their absolute Galois groups?

Awarded Feb 17 at 7:59

Will Sawin

168k9 gold badges369 silver badges636 bronze badges

Is every Dedekind domain the integral closure of some principal ideal domain?

Awarded Feb 16 at 20:07

Stanley Yao Xiao♦

31.6k7 gold badges68 silver badges179 bronze badges

Non-asymptotic Szego theorem for Toeplitz matrices

Awarded Feb 16 at 16:20

Will Sawin

168k9 gold badges369 silver badges636 bronze badges

Is Cardinal Choice equivalent to AC?

Awarded Feb 16 at 8:56

François G. Dorais

45.6k7 gold badges153 silver badges241 bronze badges

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