Excavator - Badge - MathOverflow

Excavator

Edit first post that was inactive for 6 months.

Awarded 1680 times.

Minimally 2-vertex-connected graphs?

Awarded 18 hours ago

kabenyuk

6111 gold badge3 silver badges12 bronze badges

Theories of Noncommutative Geometry

Awarded Nov 19 at 4:50

Noto_Ootori

356 bronze badges

What is / are the softwares to use to draw surfaces of the form of a two or three-holed torus , or torus, or torus with cusps attached to it?

Awarded Nov 12 at 5:28

hbghlyj

1032 bronze badges

What is a cumulant really?

Awarded Oct 27 at 4:27

Alireza Bakhtiari

33 bronze badges

Do h-coequalizers and coproducts give all h-colimits?

Awarded Oct 20 at 4:43

Naïm Favier

1034 bronze badges

Strong law of large numbers for weakly dependent random variables

Awarded Oct 17 at 5:30

Royi

1151 silver badge8 bronze badges

Computing the density of a set of multiples

Awarded Oct 14 at 5:18

John Omielan

9613 gold badges9 silver badges14 bronze badges

Invariant theory in universal algebra

Awarded Oct 8 at 6:33

Keith Kearnes

12k2 gold badges45 silver badges73 bronze badges

A sufficient condition for a subcubic graph having a 2-distance vertex 4-coloring

Awarded Sep 29 at 4:17

Kregnach

7510 bronze badges

Are the $\Gamma(N)$ the only normal congruence subgroups of $\mathrm{SL}_2(\mathbb{Z})$?

Awarded Sep 24 at 4:25

Danka Makabre

1034 bronze badges

How to refer to a “theorem” that you have shown to be wrong

Awarded Sep 24 at 4:25

Joachim Breitner

2952 silver badges8 bronze badges

Can the sphere be partitioned into small congruent cells?

Awarded Sep 22 at 4:41

yoyo

4872 silver badges9 bronze badges

why are subextensions of Galois extensions also Galois?

Awarded Sep 21 at 20:36

Linuxmetel

656 bronze badges

Special considerations when using the Woodbury matrix identity numerically

Awarded Sep 20 at 4:21

Luca Citi

1033 bronze badges

An "advanced beginner's" book on algebraic topology?

Awarded Sep 17 at 5:11

Leather Computer

32 bronze badges

A question in inverse Galois Theory

Awarded Sep 11 at 4:47

musescore1983

54 bronze badges

How to locate the paper that established Robinson Arithmetic?

Awarded Sep 10 at 4:11

M. Logic

3673 silver badges7 bronze badges

One-line proof of the Euler's reflection formula

Awarded Sep 5 at 4:55

Liu Boyu

32 bronze badges

Is pi a good random number generator?

Awarded Sep 2 at 4:33

Greg Sadetsky

1034 bronze badges

Multivariate analogue of Vandermonde determinant

Awarded Aug 25 at 4:09

Gareth Ma

1256 bronze badges

Fpqc sheafification and localisation

Awarded Aug 18 at 19:35

Tian Vlašić

30416 bronze badges

Analytic functions where all derivatives vanish at infinity and which are bounded

Awarded Aug 10 at 7:31

Gary

2009 bronze badges

Elementary proof of a triangular grid lemma

Awarded Aug 8 at 4:56

Gabriel Nivasch

1,0146 silver badges14 bronze badges

What is the significance of non-commutative geometry in mathematics?

Awarded Aug 8 at 4:56

plm

9628 silver badges17 bronze badges

Reference request for facts about bi(co)descent objects

Awarded Aug 5 at 4:25

varkor

7,85920 silver badges54 bronze badges

Uniqueness of the logarithm function

Awarded Aug 3 at 6:57

High GPA

2631 silver badge7 bronze badges

how to proof "every loopless graph G has a bipartite subgraph with at least e(G)/2 edges"? [closed]

Awarded Jul 29 at 4:25

steve chalkle

32 bronze badges

When is the pushforward of a vector bundle still a vector bundle?

Awarded Jul 29 at 4:25

user135743

2472 silver badges10 bronze badges

Link between Fokker-Planck equation and Feynman-Kac formula

Awarded Jul 22 at 4:31

postylem

1055 bronze badges

How to solve $f(f(x)) = \cos(x)$?

Awarded Jul 18 at 4:42

Bjorn Poonen

23.5k7 gold badges88 silver badges109 bronze badges

Important formulas in combinatorics

Awarded Jul 12 at 4:57

vallev

1157 bronze badges

Modular Tensor Categories: Reasoning behind the axioms

Awarded Jul 11 at 20:10

ARA

7393 gold badges9 silver badges20 bronze badges

Nefness property for symplectic equivalency of Moishezon manifolds

Awarded Jul 6 at 5:25

Invariance

3131 silver badge13 bronze badges

Number of $3\times 3$ anticommuting matrices over finite fields $\mathbb{F}_p$ is (or is not?) polynomial in $p$?

Awarded Jul 5 at 5:27

Yifeng Huang

3901 silver badge9 bronze badges

Physical measure vs SRB measures

Awarded Jul 4 at 4:05

can't stop me now

1041 gold badge1 silver badge13 bronze badges

Easy way to define positive higher K groups?

Awarded Jul 3 at 6:52

Jonas Linssen

2251 silver badge8 bronze badges

Rational equivalence is the finest

Awarded Jun 23 at 4:38

xkxdxtxdx

1055 bronze badges

What are examples of mathematical concepts named after the wrong people? (Stigler's law)

Awarded Jun 21 at 4:36

B. Naskrecki

1937 bronze badges

Quantized Enveloping Algebras at $q=1$

Awarded Jun 19 at 5:31

Jake Wetlock

1,1044 silver badges16 bronze badges

Can the Lawvere fixed point theorem be used to prove the Brouwer fixed point theorem?

Awarded Jun 18 at 5:05

Jason Gross

6851 gold badge8 silver badges17 bronze badges

Large cardinal axioms and Grothendieck universes

Awarded Jun 15 at 5:20

Zuhair Al-Johar

8,1911 gold badge12 silver badges39 bronze badges

Almost orthogonal vectors

Awarded Jun 14 at 5:25

Euclid

33 bronze badges

$C^0$ estimate for solutions of elliptic PDE with Neumann BC

Awarded May 29 at 4:11

gpr1

1346 bronze badges

Symmetric groups and Poisson processes

Awarded May 23 at 4:02

Kroki

1033 bronze badges

Any reference on multilinear algebra

Awarded May 23 at 4:02

MichaelNgelo

1538 bronze badges

Expressions for the inverse function of $f(x) = \ln(x)e^x$

Awarded May 22 at 4:10

Tyma Gaidash

1259 bronze badges

Matrices of Lie algebra of Dynkin diagram B2

Awarded May 21 at 6:15

hbghlyj

33 bronze badges

MMSE estimator expressed through cumulants

Awarded May 8 at 5:03

TryingToLearn

435 bronze badges

Geometric interpretation for non-simple $k$-vectors [closed]

Awarded May 8 at 5:03

bonif

3022 silver badges10 bronze badges

How to find the number of $k$-permutations of $r_1, r_2, r_3, \cdots , r_x$ objects?

Awarded May 3 at 4:41

user1147844

52 bronze badges

Injectivity of functors in terms of skeletons?

Awarded Apr 30 at 4:25

marino

52 bronze badges

Name for topological spaces where "every point has a local base wellordered by reverse inclusion"?

Awarded Apr 29 at 4:15

peabrainiac

1032 bronze badges

Finiteness of the Burnside Group

Awarded Apr 29 at 4:15

mathreader

1,0407 silver badges21 bronze badges

Are there any solutions to $2^n-3^m=1$?

Awarded Apr 25 at 5:11

Adam Rubinson

1053 bronze badges

Does $\DeclareMathOperator\Aut{Aut}\Aut(\Aut(\dots\Aut(G)\dots))$ stabilize?

Awarded Apr 25 at 5:11

Mike Battaglia

4,36318 silver badges40 bronze badges

Google question: In a country in which people only want boys

Awarded Apr 24 at 4:42

Benjamin Wang

1176 bronze badges

What is a two-sided geometric distribution?

Awarded Apr 21 at 4:49

Carlos Pinzón

1034 bronze badges

Is square of Delta function defined somewhere?

Awarded Apr 19 at 15:57

Davide Dal Bosco

1014 bronze badges

Function whose sets of discontinuities and zeros are the rationals

Awarded Apr 10 at 4:15

Nitin Uniyal

1033 bronze badges

Embeddings of vector spaces

Awarded Apr 7 at 4:11

cs89

9481 gold badge5 silver badges18 bronze badges

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