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Self-Learner

Answer your own question with score of 3 or more.

Awarded 1519 times.

What if homotopy were expanded to allow any connected space instead of $[0,1]$?

Awarded 2 days ago

Harry Altman

2,7551 gold badge36 silver badges45 bronze badges

Definition of a profinite category

Awarded 2 days ago

Keen

2211 silver badge5 bronze badges

Intersection map giving rise to Poincaré duality

Awarded Apr 30 at 14:03

Dev Sinha

5,09029 silver badges43 bronze badges

The Gaussian cubic for $4p = L^2 + 27M^2$

Awarded Apr 23 at 19:47

RUser4512

3251 silver badge10 bronze badges

Whether a functional which preserves maximum for comonotone functions is monotone?

Awarded Apr 22 at 18:27

Taras Radul

915 bronze badges

Is there a simple convex 3D polytope with an odd number of facets, all of which have an even number of sides?

Awarded Apr 17 at 14:22

Bernhard von Stengel

1636 bronze badges

Gromov's thesis: Any property holding for all finitely generated groups must hold for trivial reasons

Awarded Apr 17 at 5:18

tmh

8607 silver badges15 bronze badges

When does the constant diagram functor preserve fibrant objects in the injective model structure on diagram categories?

Awarded Apr 9 at 12:35

Eduardo J. Dubuc

6295 silver badges9 bronze badges

Outer automorphism groups of nilpotent groups

Awarded Apr 4 at 17:38

lawk

1416 bronze badges

Properties of $P_{n}(x)={e}^{-x}\sum_{k=0}^{\infty}\frac{a_{k,n}{x}^{k}}{k!}$

Awarded Apr 3 at 21:01

Abdelhay Benmoussa

1311 silver badge9 bronze badges

Example of Girsanov change of density with finite relative entropy, but with infinite integral over squared changed drift

Awarded Mar 30 at 22:02

Joris Bierkens

1,0156 silver badges20 bronze badges

Sharper version of Renaud-Sarvate Example

Awarded Mar 29 at 19:11

Thomas Blok

5092 silver badges11 bronze badges

A formula for Apéry numbers

Awarded Mar 29 at 2:55

Antoine Labelle

3,8871 gold badge9 silver badges28 bronze badges

$\mathcal{B}(H)$ is $\operatorname{KK}$-contractible

Awarded Mar 27 at 18:45

Anupam Datta

2835 bronze badges

Maximum minimum difference between $f(k+1)$ and average of $f(0), \dots, f(2k+1)$

Awarded Mar 27 at 9:11

wfe2022

4312 silver badges7 bronze badges

Does Kahn-Kalai conjecture (Park-Pham theorem) imply bounds on sunflower numbers?

Awarded Mar 22 at 0:11

Jarosław Błasiok

1,4107 silver badges13 bronze badges

Clarification and Proof of Inequality (8.11) in Analytic Number Theory by Iwaniec and Kowalski

Awarded Mar 14 at 8:42

Fatima Majeed

50014 bronze badges

If a flow $\phi_t$ preserves a volume form $\omega_t$ for each $t$, is it volume preserving?

Awarded Mar 13 at 5:40

subrosar

2351 silver badge9 bronze badges

Duality between binomial coefficients and Eulerian numbers

Awarded Mar 12 at 1:22

Alexander Burstein

1,3509 silver badges24 bronze badges

Proper subgroups of finite groups that intersect all but one conjugacy class

Awarded Mar 8 at 4:22

Tom WIlde

9676 silver badges14 bronze badges

Poisson Furstenberg Boundary of topological groups, reference request

Awarded Mar 7 at 6:50

Snoop Catt

5472 silver badges9 bronze badges

Weakly amenability and exactness for discrete groups

Awarded Mar 6 at 20:07

m07kl

1,75213 silver badges21 bronze badges

Are infinite Ramsey numbers completely known?

Awarded Mar 2 at 22:48

n901

8474 silver badges15 bronze badges

An identity relating Bernoulli numbers, unsigned Stirling numbers of the first kind and Bessel numbers of the first kind

Awarded Feb 27 at 21:18

Abdelhay Benmoussa

3596 bronze badges

Have you encountered this representation of the Nil-Hecke algebra on polynomials?

Awarded Feb 27 at 13:27

Lukas Johannsen

1716 bronze badges

"Symmetrize" a (balanced) hypergeometric 4F3

Awarded Feb 24 at 22:37

PalmTopTigerMO

3092 silver badges13 bronze badges

Algebraic independence relating to Airy functions

Awarded Feb 18 at 16:18

Folkmar Bornemann

1,0128 silver badges12 bronze badges

The isomorphism $H^i_c(X,\mathbb{Q}_{\ell})^G \simeq H^i_c(X/G,\mathbb{Q}_{\ell})$

Awarded Feb 18 at 12:31

Alexey Do

1,0233 silver badges11 bronze badges

Is the topology of setwise convergence Lindelöf

Awarded Feb 16 at 3:42

pabk

1416 bronze badges

Linear algebra over non-commutative semirings

Awarded Feb 13 at 18:21

Uli Fahrenberg

4532 silver badges10 bronze badges

Relatively numerically trivial divisor

Awarded Feb 12 at 0:08

Johan

2331 silver badge5 bronze badges

Concavity of hypergeometric function ratio

Awarded Feb 8 at 19:51

japalmer

4012 silver badges11 bronze badges

Normalization of Hochschild cocycles

Awarded Feb 5 at 9:07

truebaran

9,4445 gold badges30 silver badges93 bronze badges

Find a map which forces random variables to be independent

Awarded Feb 3 at 9:57

elihs

5652 silver badges12 bronze badges

Infinite-dimensional, non-unital Frobenius algebras

Awarded Feb 1 at 14:07

Qwert Otto

1,0352 silver badges13 bronze badges

Are zero dimensional ideals radical?

Awarded Jan 30 at 16:06

Mairon

1314 bronze badges

Is $\frac{1}{n} \sum_{k = 1}^{n} X_k^p$ almost surely bounded if $\mathbb{E}[X_{k_1} \cdots X_{k_m}] \leq c^m$?

Awarded Jan 28 at 19:10

unwissen

7421 gold badge2 silver badges11 bronze badges

Are there more than 2 types of posets $P\cong\mathcal O_{\rm fin}(P)\setminus\{\emptyset\}$?

Awarded Jan 26 at 2:07

Tri

1,67410 silver badges9 bronze badges

For which abelian groups $G$ and $n\ge2$ is $K(G,n)\simeq M(G,n)$?

Awarded Jan 25 at 14:17

Thorgott

1,0502 silver badges14 bronze badges

on distribution of prime divisors of random integer

Awarded Jan 24 at 21:08

Stijn Cambie

594 bronze badges

Smallest real closed field realizing all cuts of the rational numbers

Awarded Jan 24 at 10:52

Marcus

3882 silver badges10 bronze badges

How many distinct 2d arrangements of $k$ lines in general position are there?

Awarded Jan 23 at 22:50

Bipolar Minds

1,87310 silver badges17 bronze badges

Modular forms from counting points on algebraic varieties over a finite field

Awarded Jan 21 at 17:25

Bruce Bartlett

1,83113 silver badges18 bronze badges

Extension between the abelianization of the pure braid group and the symmetric group

Awarded Jan 15 at 17:52

Kenta Suzuki

3,5111 gold badge11 silver badges35 bronze badges

Quotients and associated graded

Awarded Jan 13 at 21:12

Joshua Mundinger

2,39712 silver badges31 bronze badges

Probability vector $p$ majorizes its normalized entropy vector $\small \frac{-p\log p}{H(p)}$

Awarded Jan 10 at 13:06

Amir

4031 silver badge13 bronze badges

Are these comparison morphisms between Čech and Grothendieck cohomology the same?

Awarded Jan 2 at 19:03

FShrike

1,2526 silver badges17 bronze badges

Naturality of the adjunction $f^* \dashv f_*$ in the map $f$

Awarded Jan 2 at 17:04

Eduardo de Lorenzo

5922 silver badges11 bronze badges

The ten most fundamental topics in geometric group theory

Awarded Dec 30, 2024 at 20:41

Sam Nead

28.8k5 gold badges75 silver badges137 bronze badges

Why do we require that all successors model this formula?

Awarded Dec 26, 2024 at 18:36

zaq

1697 bronze badges

Reference request for general Hurwitz spaces

Awarded Dec 25, 2024 at 21:05

rfauffar

6734 silver badges15 bronze badges

The Fermat-Catalan conjecture with signature $(2,n,4)$, $n\ge4$

Awarded Dec 25, 2024 at 16:17

Duncan Moore

1613 bronze badges

Global Choice bi-interpretable with Global Wellorder?

Awarded Dec 18, 2024 at 5:36

Jade Vanadium

6183 silver badges12 bronze badges

Is the number of similarity classes of integer matrices with given minimal and characteristic polynomial finite?

Awarded Dec 17, 2024 at 14:32

Ben Marlin

1337 bronze badges

Is there a characterization of monoids that distribute over each other?

Awarded Dec 14, 2024 at 20:03

Keith

1,2871 gold badge2 silver badges22 bronze badges

Grothendieck purity for Brauer groups of stacks

Awarded Dec 9, 2024 at 21:28

Tim Santens

4424 silver badges14 bronze badges

Connectedness of degeneracy loci

Awarded Dec 6, 2024 at 7:23

Cob

3311 silver badge8 bronze badges

Does there exist a nowhere smooth function, that has arbitrary many derivatives?

Awarded Dec 5, 2024 at 8:11

Sam Forster

7003 silver badges12 bronze badges

odd length Chevalley relations (in rank two)

Awarded Dec 3, 2024 at 2:41

Jeanne Scott

2,1971 gold badge13 silver badges19 bronze badges

Status of the Stanley–Stembridge conjecture

Awarded Nov 13, 2024 at 11:39

Joshua P. Swanson

9769 silver badges19 bronze badges

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