Nice Question - Badge - MathOverflow

Nice Question

Question score of 10 or more. This badge can be awarded multiple times.

Awarded 23017 times.

Mersenne almost primes

Awarded 15 hours ago

Stanley Yao Xiao

25.5k6 gold badges46 silver badges134 bronze badges

Situation with Artemov's paper?

Awarded 16 hours ago

Mikhail Katz

15.4k1 gold badge51 silver badges122 bronze badges

How many graduate students in mathematics are there worldwide?

Awarded yesterday

Butini

3253 silver badges7 bronze badges

Matrix ring isomorphisms of different sizes

Awarded yesterday

Pace Nielsen

18.2k4 gold badges72 silver badges134 bronze badges

Find the area of the region enclosed by $\frac{\sin x}{\sin y}=\frac{\sin x+\sin y}{\sin(x+y)}$ and the $x$-axis (comes from a probability question)

Awarded yesterday

Dan

2,6538 silver badges32 bronze badges

A game of harmonic series(s)

Awarded yesterday

Noah Schweber

19.2k8 gold badges101 silver badges312 bronze badges

Isbell duality for simplicial sets

Awarded yesterday

Emily

10.7k4 gold badges28 silver badges83 bronze badges

Examples of concrete games to apply Borel determinacy to

Awarded yesterday

Gro-Tsen

30.2k4 gold badges80 silver badges339 bronze badges

What are some good examples of spectral sequences which degenerate after the first nontrivial differential?

Awarded 2 days ago

Tim Campion♦

61.6k13 gold badges133 silver badges360 bronze badges

Simple proof that certain walks in the plane don't intersect

Awarded 2 days ago

Richard Stanley

49.5k13 gold badges152 silver badges275 bronze badges

Deciding homomorphic images of De Bruijn graphs

Awarded 2 days ago

Sam van G

1058 bronze badges

How do $\infty$-categories allow us to do descent on the derived level?

Awarded 2 days ago

Kim

4,1241 gold badge15 silver badges39 bronze badges

Is there an analogue of Steenrod's problem for $p>2$?

Awarded 2 days ago

Crash Bandicoot

3171 silver badge8 bronze badges

Why is inner model theory evidence for consistency of large cardinals?

Awarded 2 days ago

n901

5251 silver badge6 bronze badges

Low-level proof of identity related to Weierstrass P-function

Awarded Apr 14 at 17:28

Kevin Buzzard

40.8k13 gold badges163 silver badges243 bronze badges

Algebraic definition of the Kuranishi map

Awarded Apr 14 at 15:26

Piotr Achinger

15.3k2 gold badges45 silver badges87 bronze badges

Is there analogue of Peter–Weyl theorem for non-compact or quantum group

Awarded Apr 14 at 14:56

Shizhuo Zhang

5,3751 gold badge39 silver badges58 bronze badges

Is there a website or a survey collecting all NP-complete problems on graph theory?

Awarded Apr 13 at 3:02

W. Paul Liu

5052 silver badges7 bronze badges

What is the intuition behind applying the Mellin Transform to prime distribution?

Awarded Apr 13 at 2:16

onionbread

1035 bronze badges

Looking for counterexamples: Are maximal tori in the automorphism groups of smooth complex quasiprojective varieties conjugate?

Awarded Apr 12 at 20:51

Carlos Esparza

1,1118 silver badges21 bronze badges

Reference request: colimits of locally presentable categories

Awarded Apr 12 at 15:55

Theo Johnson-Freyd

53.1k10 gold badges133 silver badges325 bronze badges

Kahler structure on flag manifolds

Awarded Apr 11 at 21:08

Dyke Acland

1,46913 silver badges23 bronze badges

Do Hausdorff locally convex inductive limits always exist?

Awarded Apr 11 at 18:47

yada

1,74111 silver badges18 bronze badges

Consecutive integers of the form $2^a 3^b 5^c$

Awarded Apr 10 at 22:26

Jakub Konieczny

1,76214 silver badges25 bronze badges

Etymology of “real numbers"

Awarded Apr 10 at 9:41

Paul Talma

1974 bronze badges

Is $(\mathbb R_{\mathrm{an}}, (x\mapsto x^r)_{r\in\mathbb R})$ still the largest known polynomially bounded o-minimal structure so far?

Awarded Apr 9 at 12:32

user506835

3118 bronze badges

Is it fine to correct and extend texts of a late colleague when publishing them?

Awarded Apr 9 at 10:57

Mikhail Bondarko

16.5k4 gold badges32 silver badges96 bronze badges

Can the Pythagorean Graph be finitely colored?

Awarded Apr 9 at 9:42

Yaakov Baruch

5,0451 gold badge30 silver badges43 bronze badges

Conjectures in the representation theory of the symmetric group

Awarded Apr 9 at 5:17

Mare

26.1k6 gold badges23 silver badges101 bronze badges

Power of primes

Awarded Apr 8 at 21:01

Craw Craw

1711 silver badge10 bronze badges

Cotangent bundle lift theorem

Awarded Apr 8 at 20:18

Pengfei

2,19415 silver badges29 bronze badges

Injective ring homomorphism from $\mathbb{Z}_p[[x,y]]$ to $\mathbb{Z}_p[[x]]$

Awarded Apr 8 at 14:07

kindasorta

1,6415 silver badges14 bronze badges

Is every Zariski closed subgroup a stabilizer?

Awarded Apr 8 at 13:31