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First to answer and accepted with score of 10 or more. This badge can be awarded multiple times.

Awarded 12834 times.

How small can $|\frac{a}{b-c}| + |\frac{b}{a-c}| + |\frac{c}{a-b}|$ get for distinct positive $a,b,c$?

Awarded 12 hours ago

Thomas Bloom

7,8581 gold badge45 silver badges68 bronze badges

Are the powers of a set with the Baire Property in a Polish group a set with the Baire Property?

Awarded 22 hours ago

James E Hanson

19.6k4 gold badges60 silver badges108 bronze badges

Expected number of upsets in a knockout tournament

Awarded yesterday

Will Sawin

163k9 gold badges351 silver badges614 bronze badges

An infinite game played on $\{0,1\}^\mathbb{N}$ in which the players must avoid creating an algebraic dependency

Awarded 2 days ago

Andreas Lietz

2,89314 silver badges25 bronze badges

Selberg's result on primes in short intervals

Awarded 2 days ago

Ofir Gorodetsky

16.1k2 gold badges72 silver badges87 bronze badges

Fundamental class from smooth atlas

Awarded Nov 27 at 21:27

Liviu Nicolaescu

35.9k2 gold badges97 silver badges173 bronze badges

A question about positive polynomials

Awarded Nov 27 at 12:00

Peter Mueller

25.3k1 gold badge85 silver badges123 bronze badges

Linear algebraic lemma in Weil II

Awarded Nov 26 at 14:55

GH from MO

115k8 gold badges322 silver badges438 bronze badges

A link between polynomial function and power

Awarded Nov 26 at 10:16

Christian Remling

25.2k2 gold badges52 silver badges87 bronze badges

How now to study operads in homotopy theory?

Awarded Nov 24 at 2:15

Najib Idrissi

5,6713 gold badges29 silver badges55 bronze badges

Finite covers of manifolds with universal cover $ S^{n-1} \times \mathbb{R} $

Awarded Nov 23 at 21:01

Oscar Randal-Williams

19.1k2 gold badges70 silver badges100 bronze badges

Does every central extension by $\mathbb{G}_m$ arise from a projective representation?

Awarded Nov 22 at 5:01

David E Speyer

161k14 gold badges439 silver badges789 bronze badges

What is the significance of the height of a character?

Awarded Nov 22 at 3:33

Geoff Robinson

46.4k5 gold badges128 silver badges177 bronze badges

Does the airplane Julia set contain true circles?

Awarded Nov 22 at 0:12

Alexandre Eremenko

97k9 gold badges273 silver badges459 bronze badges

Is 0# still unique in ZFC without powerset?

Awarded Nov 21 at 21:27

Elliot Glazer

8,8132 gold badges43 silver badges78 bronze badges

Do all primes $>2$ hit $5$?

Awarded Nov 20 at 17:06

Wojowu

31.9k3 gold badges120 silver badges209 bronze badges

Norm of an operator from norms of its real and imaginary parts

Awarded Nov 20 at 11:53

Carlo Beenakker

201k19 gold badges483 silver badges705 bronze badges

Brown's twisting cochain and the homology of loop spaces

Awarded Nov 20 at 7:51

Tyler Lawson

54.5k9 gold badges192 silver badges260 bronze badges

Can every natural number be written as a product of integer powers of primes minus 1?

Awarded Nov 19 at 12:42

Zhi-Wei Sun

18k1 gold badge24 silver badges83 bronze badges

(AC) and existence of basis of $\{0,1\}^X$ for any set $X$

Awarded Nov 17 at 7:27

Elliot Glazer

8,8132 gold badges43 silver badges78 bronze badges

Nonstationary support iterations

Awarded Nov 15 at 22:11

Miha Habič

2,5641 gold badge23 silver badges26 bronze badges

The solutions of the heat equation from $0$ datum

Awarded Nov 15 at 19:33

Mateusz Kwaśnicki

17.4k1 gold badge36 silver badges57 bronze badges

Sigma algebras on the Stone–Čech compactification of a countable discrete group

Awarded Nov 15 at 19:33

Joseph Van Name

29k4 gold badges81 silver badges124 bronze badges

Classical schemes as derived schemes are discrete valued

Awarded Nov 14 at 0:13

John Pardon

19.1k3 gold badges61 silver badges135 bronze badges

Does the partition principle imply (DC)?

Awarded Nov 13 at 19:32

Asaf Karagila♦

41.9k9 gold badges145 silver badges301 bronze badges

Hoàng Xuân Sính's 2-group classification for 3 groups

Awarded Nov 12 at 15:27

Ivan Chen

1,0093 silver badges10 bronze badges

Recurrence for Narayana polynomials

Awarded Nov 11 at 19:08

Carlo Beenakker

201k19 gold badges483 silver badges705 bronze badges

Defining Lebesgue non-measurable sets with countable information

Awarded Nov 9 at 18:52

Holo

2,3591 gold badge12 silver badges31 bronze badges

Optimal bound on the growth of Riemann zeta along the critical line

Awarded Nov 9 at 18:52

Ofir Gorodetsky

16.1k2 gold badges72 silver badges87 bronze badges

When determinacy pulls back

Awarded Nov 9 at 15:38

Andreas Lietz

2,89314 silver badges25 bronze badges

How to understand non-standard halting times?

Awarded Nov 9 at 15:38

Joel David Hamkins

247k48 gold badges810 silver badges1.5k bronze badges

Some basic questions on crystalline cohomology

Awarded Nov 9 at 14:25

SashaP

7,5171 gold badge34 silver badges49 bronze badges

Reference for homotopy groups of filtered homotopy colimits

Awarded Nov 8 at 15:54

Achim Krause

13.1k1 gold badge49 silver badges63 bronze badges

Noetherian spectral space comes from noetherian ring?

Awarded Nov 7 at 0:52

David Lampert

2,8601 gold badge18 silver badges16 bronze badges

Result seemingly quoted from SGA

Awarded Nov 6 at 21:36

351910953

4383 silver badges6 bronze badges

Locus of equal area hyperbolic triangles

Awarded Nov 6 at 11:22

Sam Nead

29.9k5 gold badges82 silver badges145 bronze badges

Are $0,-\frac{1}{2},-1$ the only rational roots of the Faulhaber polynomial $S_{k}(x)=0\ $?

Awarded Nov 5 at 16:23

Karl Fabian

1,76611 silver badges16 bronze badges

On the difference between a projective chain complex and a level-wise projective chain complex

Awarded Nov 5 at 12:27

Ralph

16.4k42 silver badges81 bronze badges

Sum in tensor product of irreducible representations on $S_n$

Awarded Nov 4 at 10:37

Vít Tuček

9,8722 gold badges32 silver badges70 bronze badges

A skew-field with perfect multiplicative group

Awarded Nov 4 at 2:09

Linus

8886 silver badges12 bronze badges

For which $q$ is the value of the chromatic polynomial of every planar graph at $q$ positive?

Awarded Nov 3 at 14:52

Gordon Royle

13.7k1 gold badge55 silver badges78 bronze badges

Is there an algorithm which, given integer $k \ge 2 $, find all abc-tuple with $\mathrm{rad}(abc)=k$?

Awarded Nov 3 at 3:09

Will Sawin

163k9 gold badges351 silver badges614 bronze badges

Is every set of cardinals bounded?

Awarded Nov 2 at 19:25

Elliot Glazer

8,8132 gold badges43 silver badges78 bronze badges

Is a left-exact limit-preserving functor $Ab \to Ab$ necessarily representable?

Awarded Nov 1 at 17:02

Todd Trimble

54.1k6 gold badges211 silver badges328 bronze badges

Idempotent completion of functor categories

Awarded Nov 1 at 15:36

Maxime Ramzi

18.9k2 gold badges55 silver badges96 bronze badges

Stack with affine stabilizers but not quasi-affine diagonal

Awarded Oct 31 at 19:10

Jarod Alper

7266 silver badges6 bronze badges

No real roots of $\frac{1}{2^{1+it}} + \frac{1}{3^{1+it}} + \frac{1}{5^{1+it}}$

Awarded Oct 31 at 2:42

GH from MO

115k8 gold badges322 silver badges438 bronze badges

Has an explicit value of \$x_0\$ been computed in the Baker–Harman–Pintz theorem on prime gaps?

Awarded Oct 30 at 6:51

Carlo Beenakker

201k19 gold badges483 silver badges705 bronze badges

What's the probability that two numbers share the same totient function value?

Awarded Oct 29 at 13:12

GH from MO

115k8 gold badges322 silver badges438 bronze badges

Explicit version of the Burgess theorem

Awarded Oct 28 at 16:01

Tanmay Khale

3586 silver badges10 bronze badges

Roadmap for Algebraic Geometry/Homotopy Theory/Algebraic $K$-Theory intersection

Awarded Oct 28 at 14:50

David White

31.6k9 gold badges168 silver badges269 bronze badges

Computational complexity of a preorder of commutativity conditions

Awarded Oct 27 at 18:10

Pace Nielsen

19.3k4 gold badges84 silver badges144 bronze badges

Is there an existing name for "piecewise vector multiplication"

Awarded Oct 27 at 13:18

Nurdin Takenov

1,6151 gold badge11 silver badges17 bronze badges

Does ZF bound countable unions of countable sets?

Awarded Oct 27 at 9:00

Asaf Karagila♦

41.9k9 gold badges145 silver badges301 bronze badges

Non-bijective conformal maps between annuli

Awarded Oct 27 at 4:46

Christian Remling

25.2k2 gold badges52 silver badges87 bronze badges

Open complement of hypersurfaces

Awarded Oct 27 at 1:35

abx

39.4k3 gold badges92 silver badges154 bronze badges

Probability of finding a prime number between $x-\ln(x)$ and $x+\ln(x)$

Awarded Oct 27 at 1:35

GH from MO

115k8 gold badges322 silver badges438 bronze badges

Finding out $p$-torsion elements of an elliptic curve $E$ over $\mathbb{Q}_p$

Awarded Oct 25 at 14:31

Chris Wuthrich

10.2k1 gold badge41 silver badges52 bronze badges

Metamathematical/philosophical understanding of the smallest aleph

Awarded Oct 25 at 2:03

Noah Schweber

19.4k10 gold badges121 silver badges369 bronze badges

Can every Sidon set of size 3 be extended to a finite perfect difference set?

Awarded Oct 24 at 15:11

Will Sawin

163k9 gold badges351 silver badges614 bronze badges

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