Organizer - Badge - Mathematics Stack Exchange

Organizer

First retag.

Awarded 8336 times.

Is there any straight line lying on $z=x-(y(1-x))/(1-y)$.

Awarded 16 hours ago

confusedandbemused

727 bronze badges

Solution Verification (RMO Problem involving PHP)

Awarded yesterday

YouKnowCipher

5001 silver badge13 bronze badges

Solving $p+q=r$, $\frac{|p|}{|q|}=\frac{|a|}{|b|}$, $\mathrm{sign}(a)=\mathrm{sign}(p)$, $\mathrm{sign}(b)=\mathrm{sign}(q)$, for $p$ and $q$ [closed]

Awarded 2 days ago

Lavender

3311 silver badge11 bronze badges

Finite open cover of a compact Hausdorff space admits a closed shrinking?

Awarded Sep 14 at 19:17

krm2233

6,1342 silver badges19 bronze badges

Insights on Learning Mathematics [closed]

Awarded Sep 14 at 14:57

Srini

1,0531 gold badge10 silver badges24 bronze badges

calculate total power of each user depending on the timestamp and polynomial function

Awarded Sep 12 at 13:55

Kraken

978 bronze badges

(post deleted or otherwise unavailable)

Awarded Sep 11 at 2:55

I..

9413 silver badges18 bronze badges

Are there any Turing-undecidable problems whose undecidability is independent of the Halting problem?

Awarded Sep 9 at 15:08

NON

1361 silver badge15 bronze badges

Bijection between orderings of $\mathbb{R}(X)$ and Dedekind cuts in $\mathbb{R}$

Awarded Sep 9 at 9:08

Kritiker der Elche

4,8646 silver badges20 bronze badges

$A$ and $B$ is compact space of normed vector space then $A+B$ is compact. [duplicate]

Awarded Sep 8 at 9:33

Timon Kolt

4172 silver badges17 bronze badges

Proof of the 'Infinite' DeMorgan's Law.

Awarded Sep 7 at 3:09

银雀Sparrxw

2921 silver badge10 bronze badges

(post deleted or otherwise unavailable)

Awarded Sep 6 at 16:11

tommy1996q

3,49616 silver badges36 bronze badges

Understanding a bound on number of primes congruent with $a$ mod $q$ [closed]

Awarded Sep 5 at 21:38

Omer Simhi

991 silver badge8 bronze badges

Prove that every acyclic directed graph has at least one source and at least one sink. [closed]

Awarded Sep 5 at 8:17

Prasanna Venkatesan

14511 bronze badges

Proving it is a Brownian motion

Awarded Sep 5 at 0:01

392781

799 bronze badges

Mean squared error of a sample covariance matrix

Awarded Sep 4 at 13:27

Daniel Furtado Ferreira

33 bronze badges

If $\alpha$ is a root of $x^3-3x+1$ then $f: \mathbb{Q}(\alpha)\to \mathbb{Q}(\alpha)$ with $f(1)=1$ and $f(\alpha)=\alpha^2-2$ is an automorphism

Awarded Sep 2 at 3:22

Theincredibleidiot

1188 bronze badges

Richardson's theorem for constants

Awarded Aug 30 at 13:45

Mountain

5323 silver badges17 bronze badges

Help with solving ODE

Awarded Aug 29 at 19:32

Thomas Kojar

6,5722 gold badges16 silver badges46 bronze badges

Show that a 2-regular, finite, connected graph is a cycle (nontrivial)

Awarded Aug 29 at 12:12

Neckverse Herdman

1,7083 silver badges19 bronze badges

(post deleted or otherwise unavailable)

Awarded Aug 27 at 22:43

Jean Abou Samra

7671 silver badge9 bronze badges

(post deleted or otherwise unavailable)

Awarded Aug 27 at 14:58

Zoe Allen

6,36610 silver badges33 bronze badges

(post deleted or otherwise unavailable)

Awarded Aug 27 at 14:06

Angae MT

1,9622 silver badges13 bronze badges

Weighted Jaccard with positive and negative weights

Awarded Aug 27 at 11:47

Lieven

2,3602 silver badges16 bronze badges

Is Desmos Malfunctioning? [duplicate]

Awarded Aug 26 at 6:11

Einsteinium

1871 silver badge15 bronze badges

Laplacian of a rank two tensor in curvilinear coordinate

Awarded Aug 23 at 22:01

Marco

417 bronze badges

How to get the number of ways of getting a five card hand that is a straight flush from a standard deck of cards

Awarded Aug 23 at 21:18

ParkerM

1031 bronze badge

Questions on basic k-combination of n-element

Awarded Aug 23 at 17:31

Programmer.zip

2241 silver badge10 bronze badges

(post deleted or otherwise unavailable)

Awarded Aug 23 at 15:34

Balaji Mallikarjun S

391 silver badge18 bronze badges

In need of help with step in proof of Lundberg inequality

Awarded Aug 21 at 20:21

Wei

1,5121 silver badge14 bronze badges

Arranging people in a jeep.

Awarded Aug 21 at 14:25

19021605

8541 silver badge16 bronze badges

Complex rates and variation question

Awarded Aug 21 at 10:12

Vladimir Lysikov

2,8021 gold badge16 silver badges26 bronze badges

Paired vs 2-sample t-test

Awarded Aug 16 at 16:07

Ryan Shen

3421 silver badge9 bronze badges

Line segment dividing problem [duplicate]

Awarded Aug 13 at 23:47

Sigma Algebra

9411 silver badge19 bronze badges

Proof verification and hint request for HoTT book exercise 2.17

Awarded Aug 12 at 16:03

Naïm Favier

2,6931 gold badge8 silver badges16 bronze badges

Determine the maximum positive integer $m$ such that $x_n(x_n − 1)(x_n − 2). . .(x_n − m + 1)/m!$ is never a multiple of $7$ for any integer $n$.

Awarded Aug 11 at 15:48

Meitar Abarbanel

1,2831 gold badge11 silver badges25 bronze badges

About the additive property of Donaldson's functional

Awarded Aug 8 at 16:16

Johnny Lemmon

2,0471 gold badge11 silver badges23 bronze badges

Flaw in this proof by induction

Awarded Aug 6 at 10:34

Sze Yoong Low

15710 bronze badges

Is there any proof that there doesn't exist a circulant Hadamard matrix of size $8 \times 8$?

Awarded Aug 5 at 2:18

user1116616

2451 gold badge4 silver badges16 bronze badges

Proof verification: column rank = row rank

Awarded Aug 4 at 16:48

BarackBarackBarack

3282 silver badges13 bronze badges

(post deleted or otherwise unavailable)

Awarded Aug 1 at 7:06

Charles Andrew

1013 bronze badges

(post deleted or otherwise unavailable)

Awarded Jul 28 at 19:11

M.Riyan

1,3457 silver badges17 bronze badges

Is gauge group infinite dimensional Lie group?

Awarded Jul 28 at 4:30

Z. Liu

5002 silver badges14 bronze badges

Optimal Strategy for Multi Player Coin Game

Awarded Jul 27 at 23:08

Adam Dougall

6341 silver badge13 bronze badges

Derivation of the expected minimum distance between uniform random variables on the unit interval

Awarded Jul 23 at 23:06

Zack Fisher

1,9902 silver badges19 bronze badges

A question about the irrationality measure formula

Awarded Jul 19 at 0:16

Boris PerezPrado

2251 silver badge9 bronze badges

Distance between subspaces after premultiplication by diagonal matrice

Awarded Jul 14 at 2:26

Awe Kumar Jha

1,2206 silver badges21 bronze badges

Given is the system of equations, solve using numerical methods

Awarded Jul 13 at 10:45

The Sapient

531 silver badge12 bronze badges

I want to check the positive definiteness of the matrix $\Lambda$

Awarded Jul 9 at 16:03

Dheeran Wiggins

8610 bronze badges

(post deleted or otherwise unavailable)

Awarded Jul 6 at 10:42

Lucenaposition

2,0361 gold badge8 silver badges27 bronze badges

(post deleted or otherwise unavailable)

Awarded Jul 1 at 7:03

whatamidoing

3,6712 gold badges5 silver badges32 bronze badges

Question about Hölder's inequality for n-dimensional euclidean spaces.

Awarded Jun 28 at 21:46

J. Chapman

1,1221 silver badge17 bronze badges

Relation between rank and null space of transpose

Awarded Jun 28 at 19:40

Chaudhary

8632 silver badges17 bronze badges

(post deleted or otherwise unavailable)

Awarded Jun 19 at 5:32

Simon

1,4661 silver badge13 bronze badges

Points of definitions of Composite Functions

Awarded Jun 18 at 8:15

Bowei Tang

2,0011 gold badge5 silver badges24 bronze badges

Is the notation $\Delta_{i=1}^n a_i = a_1 - a_2 - \cdots - a_n$ for "cumulative subtraction" a good idea?

Awarded Jun 16 at 12:18

Giordano Ribeiro

3531 silver badge12 bronze badges

How to accurately average a function with a nonlinear response?

Awarded Jun 14 at 21:26

tychonovs-scholar

6181 gold badge1 silver badge18 bronze badges

Formula for converting monthly percentages from a 12 month distribution into x number of months

Awarded Jun 12 at 17:56

Kolakoski54

5831 silver badge11 bronze badges

The left shift map and its image.

Awarded Jun 9 at 7:42

Konstruktor

39713 bronze badges

Translate sentence to symbolic (Every real number is greater than some integer)

Awarded Jun 7 at 16:36

Mystic mystic

1336 bronze badges

2 3 4 5

…

139 Next