Self-Learner - Badge - Mathematics Stack Exchange

Self-Learner

Answer your own question with score of 3 or more.

Awarded 4591 times.

How to tell if a cubic curve in the projective plane is irreducible

Awarded 1 hour ago

bbrot

4314 silver badges14 bronze badges

Is it always possible extend a uniformly continuous function?

Awarded 15 hours ago

Viktor

2411 silver badge10 bronze badges

relationship between a great circle arc and a latitude circle arc at a given latitude

Awarded 17 hours ago

Marcus Junius Brutus

1,0351 gold badge9 silver badges20 bronze badges

There are no integer solution to $a^p+ p b^p+ (10p+1) c^p=0$ for any $p$ prime

Awarded Nov 20 at 10:47

Marco

3,8311 gold badge6 silver badges28 bronze badges

Connection between the Laplace transform and generating functions

Awarded Nov 19 at 16:00

obataku

5,6712 gold badges24 silver badges26 bronze badges

Is $d(u,v):=\|u-v\|/\sqrt{\|u\|^2 + \|v\|^2 - \text{Re}\langle u,v \rangle}$ a metric on an inner product space?

Awarded Nov 14 at 7:33

BGA

6336 silver badges17 bronze badges

Any upper bound for $\sum_{i=1}^{n} v_i^\mathsf{T} \left( \left( \alpha I + \sum_{k=1}^{i} v_k v_k^\mathsf{T} \right)^{-1} \right)^{2} v_i$?

Awarded Nov 13 at 21:52

WuMing WuXing

916 bronze badges

Translation error in Kolmogorov's 1957 Superposition Theorem

Awarded Nov 7 at 16:10

Felix Mest

1786 bronze badges

Degree of splitting field of $X^n-a$ over $\mathbb{F}_p$

Awarded Nov 7 at 12:13

Afntu

4,2852 gold badges24 silver badges37 bronze badges

Generalized inverse gamma distribution

Awarded Nov 4 at 5:45

spitzen

816 bronze badges

Show that $\lim _{n \rightarrow \infty} \frac{1}{4^n} h\left(2^n P\right)$ exists

Awarded Oct 30 at 7:13

Clyde Kertzer

3,3645 gold badges16 silver badges51 bronze badges

Is the set of critical values for percolation dense in $(0,1)$?

Awarded Oct 30 at 0:58

Bruno Andrades

5,3901 gold badge17 silver badges33 bronze badges

Closed form for $I_n = \int_0^{\pi} \frac{x \sin(nx)}{1 - \cos x}\, dx$

Awarded Oct 29 at 17:40

Rishit Garg

1,1243 silver badges14 bronze badges

For which integer values $n$ the number $n^5 + n + 1$ is prime?

Awarded Oct 26 at 15:45

Matthew Willow

9944 silver badges13 bronze badges

Proofs to Ji Chen's Lemma (Symmetric Function Theorem)

Awarded Oct 22 at 19:09

Chen Dan

5103 silver badges11 bronze badges

Compact sets of lower limit topology

Awarded Oct 21 at 1:40

Chi Cheuk Tsang

2,51719 silver badges37 bronze badges

Local smoothing conjecture on Riemannian manifolds

Awarded Oct 20 at 12:46

Qiuye Jia

1036 bronze badges

Awarded Oct 19 at 17:27

Long-Ping Li

1,2452 silver badges15 bronze badges

Inductive hypothesis in surreal multiplication proof

Awarded Oct 18 at 4:22

ViHdzP

4,9322 gold badges21 silver badges52 bronze badges

Effective Uniformization Theorem for the Torus

Awarded Oct 17 at 15:54

Frieder Jäckel

1,9799 silver badges16 bronze badges

Integration by substitution in different dimensions

Awarded Oct 16 at 11:32

Till

5244 silver badges13 bronze badges

Prove Integral Evaluates to Fransén–Robinson constant

Awarded Oct 16 at 3:00

Maxime Jaccon

5,2271 gold badge6 silver badges45 bronze badges

Prove that the "natural preorder" on a skew lattice is a preorder

Awarded Oct 15 at 3:46

shirAko

837 bronze badges

Hyperbolic translation

Awarded Oct 12 at 1:47

123

6711 bronze badges

conjugate bundle

Awarded Oct 9 at 8:39

Dai

8518 silver badges18 bronze badges

Closed form for this incomplete gamma series?

Awarded Oct 7 at 9:18

Nathan McKenzie

1,0276 silver badges14 bronze badges

Relaxation of $\min_{H} \text{tr}(H^T P H)$

Awarded Oct 3 at 13:42

SouthChinaSeaPupil

9975 silver badges14 bronze badges

Proving the existence of a fixed-point for the interpolation problem

Awarded Sep 30 at 8:38

Alvaro Fernández

716 bronze badges

Vanishing ext groups of sheaves with disjoint support

Awarded Sep 29 at 18:57

Cranium Clamp

3,5411 gold badge12 silver badges31 bronze badges

Equality of positive operators from equality of norms of action

Awarded Sep 27 at 6:12

Matthew Daws

2,94519 silver badges30 bronze badges

Ian Stewart, Definition for Primitive Root of Unity

Awarded Sep 26 at 10:07

MWu

1896 bronze badges

Collineations of the unit disk

Awarded Sep 24 at 5:05

user49640

2,87411 silver badges17 bronze badges

Prove an inequality involving the digamma function

Awarded Sep 22 at 8:11

W.J

4052 silver badges11 bronze badges

Homomorphism induced by antipode preserving map carries generator to odd power of itself

Awarded Sep 18 at 19:00

Sahiba Arora

11.1k10 gold badges38 silver badges67 bronze badges

Regularity for a Nonhomogeneous Heat Equation

Awarded Sep 18 at 16:53

SC2020

8094 silver badges12 bronze badges

Are open sets and points the same in topology?

Awarded Sep 18 at 6:16

Caleb Jares

6531 gold badge7 silver badges19 bronze badges

Mickey Mouse Polygon - Regular Polygons forming Mysterious Angle

Awarded Sep 16 at 23:22

Chris So

6812 silver badges9 bronze badges

Proper flat morphism with geometrically connected and smooth generic fiber

Awarded Sep 15 at 4:11

RandomMathUser

2111 silver badge8 bronze badges

Finding the bounds for $|e^z - 1|$ on unit circle.

Awarded Sep 14 at 7:52

E.E.

3841 silver badge11 bronze badges

How does BDiff$(F)$ classify smooth $F$-bundles and why is it topologized with the Whitney $C^\infty$-topology?

Awarded Sep 14 at 7:52

Frederik

1,21910 silver badges16 bronze badges

What is the main difference between Markov renewal process and Semi-Markov Process?

Awarded Sep 12 at 20:25

mostafa8026

2033 silver badges15 bronze badges

Are all monotone Boolean functions weighted threshold functions?

Awarded Sep 11 at 11:36

mathperson314

5,2071 gold badge6 silver badges31 bronze badges

Prove $\forall y \exists x (Fx \leftrightarrow \neg Fy )\rightarrow (\exists x Fx \land \exists x \neg Fx)$ in Open Logic Project system

Awarded Sep 11 at 0:04

Fernando Martinez

6,90222 gold badges77 silver badges115 bronze badges

Gauss curvature of conformal metrics

Awarded Sep 9 at 17:12

CA13

2,57712 silver badges23 bronze badges

In mathematics is null == zero?

Awarded Sep 9 at 3:02

Manish Shrivastava

1651 silver badge7 bronze badges

Lower limit of the means of independent random variables

Awarded Sep 8 at 16:48

DJWCB

8341 silver badge10 bronze badges

An interesting limit: $\lim_\limits{n\to\infty}\frac{\sin 1\sin\sqrt{1}+\sin 2\sin\sqrt{2}+\sin 3\sin\sqrt{3}+\cdots+\sin n\sin\sqrt{n}}{n}$

Awarded Sep 5 at 17:01

Angelo

14.3k3 gold badges14 silver badges37 bronze badges

Integrating $\int_0^\infty \frac{x}{(4x^2+\pi^2)\sinh x} dx$ using residues

Awarded Sep 4 at 12:40

Grisha Taroyan

7084 silver badges18 bronze badges

$\text{Tor}$ and $IJ=I\cap J$: Eisenbud exercice A3.17

Awarded Sep 2 at 22:27

Gabriel Soranzo

2,95016 silver badges33 bronze badges

In what sense do we "not know why the sporadic groups exist"?

Awarded Sep 2 at 7:53

Core Silverman

6131 silver badge9 bronze badges

The set of algebraic numbers with odd degrees appears to form a field

Awarded Sep 1 at 20:16

user

3259 bronze badges

Find the dimensions of the rectangle ABCD.

Awarded Aug 29 at 21:49

Jamil Sanjakdar

1,6981 gold badge1 silver badge17 bronze badges

Verifying the relations of the pure braid group

Awarded Aug 29 at 9:37

Cykloalkan

416 bronze badges

Why $PGL(2, 9)$ is not isomorphic to $S_6$?

Awarded Aug 28 at 16:16

user97635

9815 silver badges16 bronze badges

Uniform convergence of the Bergman kernel's orthonormal basis representation on compact subsets

Awarded Aug 25 at 23:11

fbg

4274 silver badges12 bronze badges

Analog of du Bois-Reymond for when h is in another function

Awarded Aug 25 at 22:07

drennebi

615 bronze badges

Hausdorff condition for a relative CW-complex $(X, A)$

Awarded Aug 21 at 7:16

kado

736 bronze badges

Relationship between normalizers of different Sylow $p$-subgroups

Awarded Aug 18 at 5:26

Yash Permalla

1475 bronze badges

Does there exist a copy of Euclid's Elements with modern notation and no figures?

Awarded Aug 18 at 5:11

David M

5344 silver badges12 bronze badges

Why does inverting with respect to the incircle sends the circumcircle to the nine-point circle of the contact triangle?

Awarded Aug 17 at 2:20

Omer

2,54812 silver badges29 bronze badges

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