Notable Question

Question with 2,500 views. This badge can be awarded multiple times.

Awarded 8178 times.

How to compute the clustering coefficient of a random graph?

Awarded Feb 17 at 3:33

John K

231 silver badge4 bronze badges

3D Billiards problem inside a torus

Awarded Feb 16 at 22:46

ShnitzelKiller

5894 silver badges12 bronze badges

Prove that $\sum_{n = 1}^{p - 1} n^{p - 1} \equiv (p - 1)! + p \pmod {p^2}$ with $p$ being an odd prime

Awarded Feb 16 at 1:46

Saša

2232 silver badges6 bronze badges

How would Hilbert and Weber think about the Langlands programme?

Awarded Feb 15 at 20:32

Robert Kucharczyk

1,2881 gold badge18 silver badges26 bronze badges

What are known properties of matrices where off-diagonal elements are 1?

Awarded Feb 15 at 19:40

cgmil

2352 silver badges8 bronze badges

Does every ODE comes from something in physics?

Awarded Feb 15 at 19:40

Charles Siegel

15.8k8 gold badges85 silver badges132 bronze badges

Are there dense sets of positive but not full measure? [closed]

Awarded Feb 15 at 4:05

Stanley Yao Xiao

25.5k6 gold badges46 silver badges134 bronze badges

Zero divisor conjecture and idempotent conjecture

Awarded Feb 14 at 16:06

yeshengkui

1,37312 silver badges24 bronze badges

Does projective imply flat?

Awarded Feb 14 at 13:40

Theo Johnson-Freyd

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Taylor's series for Lie groups

Awarded Feb 13 at 19:20

Alessandro Saccon

411 silver badge3 bronze badges

How many papers are posted a year? [closed]

Awarded Feb 13 at 19:20

tox123

4165 silver badges14 bronze badges

When does a perverse sheaf occur in the decomposition theorem?

Awarded Feb 13 at 9:18

Tian An

3,70917 silver badges35 bronze badges

What is the minimum N for which there exist N points in the plane that cannot be covered by any number of non-overlapping closed unit discs?

Awarded Feb 13 at 2:41

jordancurve

3492 silver badges6 bronze badges

Generalization of eigenvalues/vectors to modules?

Awarded Feb 12 at 21:06

Gregory Crosswhite

1852 silver badges7 bronze badges

What mathematical problems can be attacked using DeepMind's recent mathematical breakthroughs?

Awarded Feb 12 at 19:05

Ryan Hendricks

6755 silver badges8 bronze badges

optimization of inverse matrix with constraint on matrix elements

Awarded Feb 12 at 7:42

Bing

491 silver badge2 bronze badges

How to write mathematics without typing?

Awarded Feb 12 at 7:42

Anonymous

4012 silver badges4 bronze badges

Compute Lie algebra cohomology

Awarded Feb 12 at 5:07

Michele Torielli

6716 silver badges16 bronze badges

Why sheaves are important and why do we care about them? [closed]

Awarded Feb 11 at 9:27

Lolman

3692 silver badges10 bronze badges

Quick ways to calculate cohomology of vector bundle/local system from transition functions?

Awarded Feb 11 at 7:21

Ketil Tveiten

1,47815 silver badges21 bronze badges

Convexity and Lipschitz continuity

Awarded Feb 11 at 4:41

Piotr Hajlasz

27.3k5 gold badges82 silver badges176 bronze badges

Poincaré recurrence and its implications for statistical physics and the arrow of time

Awarded Feb 10 at 18:26

display llvll

1,4841 gold badge8 silver badges26 bronze badges

A good reference to the general Chinese Remainder Theorem

Awarded Feb 10 at 14:56

Taras Banakh

40.9k3 gold badges69 silver badges175 bronze badges

Measures and differential forms on manifolds

Awarded Feb 10 at 7:52

Galois groupie

4573 silver badges9 bronze badges

What to expect from spectral algebraic geometry

Awarded Feb 10 at 4:06

Exit path

2,9692 gold badges15 silver badges22 bronze badges

The difference between $l^1(G)$ and the reduced group $C^*$ algebra $C_r^*(G)$

Awarded Feb 9 at 16:15

yeshengkui

1,37312 silver badges24 bronze badges

What is meant by the inverse function theorem in algebraic geometry?

Awarded Feb 9 at 15:16

Arrow

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Reference request: Moduli spaces of bundles over singular curves

Awarded Feb 9 at 13:50

Qfwfq

22.7k14 gold badges118 silver badges217 bronze badges

Hard Cube Puzzle

Awarded Feb 9 at 5:10

user12265

1331 silver badge7 bronze badges

Entropy and total variation distance

Awarded Feb 9 at 4:04

H A Helfgott

19.4k3 gold badges42 silver badges122 bronze badges

What are _all_ of the exactness properties enjoyed by stable $\infty$-categories?

Awarded Feb 8 at 16:57

Tim Campion♦

61.6k13 gold badges133 silver badges360 bronze badges

Tips for reading arXiv papers in mathematics

Awarded Feb 8 at 16:27

Shaun

3514 silver badges15 bronze badges

Open questions in "Spin geometry"

Awarded Feb 8 at 15:40

Bilateral

3,06421 silver badges41 bronze badges

Why does the gamma function use the symbol $\Gamma(\,)$?

Awarded Feb 8 at 5:18

Joseph O'Rourke

149k34 gold badges343 silver badges934 bronze badges

Can any quaternion be written in exponential form? [closed]

Awarded Feb 7 at 21:41

PhilMacKay

1311 silver badge3 bronze badges

Obtain Lorentzian manifolds from Riemannian ones by Wick rotation

Awarded Feb 7 at 16:20

GFR

6394 silver badges10 bronze badges

A question on pull back of a nef and big divisor

Awarded Feb 7 at 10:35

MZWang

8437 silver badges18 bronze badges

How many ways can you inscribe five 24-cells in a 600-cell, hitting all its vertices?

Awarded Feb 7 at 9:34

John Baez

21.6k3 gold badges80 silver badges162 bronze badges

Weak-* compactness in L^1

Awarded Feb 6 at 18:05

Dorian

191 silver badge2 bronze badges

Complex Eigenvalues of Directed Graphs

Awarded Feb 5 at 21:11

042

832 silver badges5 bronze badges

Why SU(3) is not equal to SO(5)?

Awarded Feb 5 at 6:56

arivero

4374 silver badges14 bronze badges

Classification of mapping tori

Awarded Feb 5 at 6:20

sara

2573 silver badges5 bronze badges

Dynamical Systems for undergraduate students

Awarded Feb 4 at 2:50

Paulo Henrique

4053 silver badges9 bronze badges

Some Hankel Determinants

Awarded Feb 3 at 22:51

Steven Landsburg

22.5k4 gold badges93 silver badges149 bronze badges

Modular forms of fractional weight

Awarded Feb 3 at 12:46

wood

2,71426 silver badges32 bronze badges

Interpreting $f^*f_*$

Awarded Feb 3 at 7:15

LMN

3,51520 silver badges47 bronze badges

Reference requested: Random walk on groups

Awarded Feb 3 at 0:47

user47245

1011 silver badge3 bronze badges

Daunting papers/books and how to finally read them

Awarded Feb 3 at 0:06

Jon23

7372 gold badges4 silver badges6 bronze badges

Surreal exponentiation -- are the varying definitions equivalent? If not, is there agreement on which ones are better?

Awarded Feb 2 at 22:01

Harry Altman

2,5751 gold badge32 silver badges44 bronze badges

How to calculate or estimate RKHS norm? [closed]

Awarded Feb 1 at 14:25

Parikshit

631 silver badge5 bronze badges

Symmetric products of projective varieties

Awarded Feb 1 at 6:22

Dima Sustretov

4,06019 silver badges35 bronze badges

Computing the Zariski closure of a subgroup of SL(n,Z)

Awarded Feb 1 at 3:17

Alex Eskin

3,13123 silver badges27 bronze badges

cohomology of complete intersections

Awarded Jan 31 at 18:42

Hugo Chapdelaine

7,5211 gold badge27 silver badges68 bronze badges

Measure of a set of irrational numbers

Awarded Jan 31 at 13:55

sokho

1971 silver badge8 bronze badges

Completion of modules of differentials (A strange exercise in Liu's AG textbook)

Awarded Jan 31 at 5:36

TJCM

1,09110 silver badges21 bronze badges

What's the smallest $\lambda$-calculus term not known to have a normal form?

Awarded Jan 31 at 1:48

John Tromp

1,6798 silver badges14 bronze badges

What is the precise relationship between Langlands and Tannakian formalism?

Awarded Jan 30 at 19:36

James D. Taylor

6,1887 gold badges45 silver badges79 bronze badges

Non trivial vector bundle over non-paracompact contractible space

Awarded Jan 30 at 10:15

Ramón Barral

2811 gold badge5 silver badges7 bronze badges

What is the 31st homotopy group of the 2-sphere?

Awarded Jan 28 at 17:49

Trimok

2652 silver badges8 bronze badges

How to prove that a projective variety is a finite CW complex?

Awarded Jan 27 at 20:46

Dmitri Panov

28.8k4 gold badges91 silver badges159 bronze badges

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