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Investor

First bounty you offer on another person's question.

Awarded 2120 times.

Transforming a single Gaussian into a mixture of Gaussians

Awarded Sep 27 at 22:17

Durden

1561 silver badge13 bronze badges

Determining the kernel of a Vandermonde-like matrix

Awarded Sep 24 at 6:37

John Targaryen

614 bronze badges

What is the number of dimensions of a scalar?

Awarded Sep 24 at 1:42

user103496

1551 silver badge11 bronze badges

Count permutations with given longest increasing subsequence

Awarded Sep 22 at 22:06

Simd

23911 bronze badges

Is Every Closed Algebraic Set of Dimension $n$ Contained in a Closed Variety of Dimension $n+1$

Awarded Sep 21 at 9:43

Sergey Guminov

3,6251 gold badge10 silver badges18 bronze badges

Convolution of a box function over the hypercube

Awarded Sep 20 at 10:55

Laplacian

2,3689 silver badges19 bronze badges

Leibniz integral rule for an arbitrary number of dimensions

Awarded Sep 15 at 19:42

user239753

559 bronze badges

The concept of differential and derivative

Awarded Sep 12 at 18:34

vallev

13316 bronze badges

Prove $\int_{0}^{1} \frac{k^{\frac34}}{(1-k^2)^\frac38} K(k)\text{d}k=\frac{\pi^2}{12}\sqrt{5+\frac{1}{\sqrt{2} } }$

Awarded Sep 9 at 9:27

User

40715 bronze badges

How to solve the first order ODE

Awarded Sep 2 at 1:15

Gonçalo

4,4282 gold badges8 silver badges23 bronze badges

When is a connection on the adjoint bundle induced by a principal connection?

Awarded Aug 29 at 4:26

Mohith Raju

7195 silver badges12 bronze badges

Integrating $x \sec^2 (x)$

Awarded Aug 25 at 13:34

Petəíŕd The Linux Wizard

515 bronze badges

Land-based path from top to bottom if and only if no water based path from left to right

Awarded Aug 21 at 4:06

Damian Pavlyshyn

3,3311 gold badge12 silver badges24 bronze badges

Solution of ODE with discontinuous coefficients

Awarded Aug 20 at 23:30

abc

3312 silver badges11 bronze badges

Maximum product of sums of a given array of numbers

Awarded Aug 17 at 21:05

TheJack

49413 bronze badges

Let ABCD be a convex quadrilateral with AD = BC. Show that AD and BC determine congruent angles with the line passing the midpoints.

Awarded Aug 13 at 19:02

Ionela Buciu

44516 bronze badges

Deriving the Oversampling formula

Awarded Aug 10 at 16:50

John.W

3692 silver badges11 bronze badges

Lorenzini's “Invitation to arithmetic geometry”, 2nd exercise

Awarded Aug 6 at 11:18

Tommy1234

4602 silver badges13 bronze badges

$a,b,c\ge 0: a+b+c+abc=4$. Prove that: $\sum_{cyc}\sqrt{\frac{a+b}{c+ab}}\ge 3.$

Awarded Aug 6 at 5:26

Dragon boy

12314 bronze badges

Interesting expected value question about cars.

Awarded Aug 3 at 17:52

Display name

4,92410 silver badges27 bronze badges

Elo/Glicko based rating system for team games and with margin of victory multiplier

Awarded Jul 30 at 20:19

maxkoryukov

513 bronze badges

Singular value of production of projection matrix and some other matrix

Awarded Jul 27 at 7:10

Piotr Lewandowski

275 bronze badges

Question on a Gaussian sum and Jacobi sum identity

Awarded Jul 21 at 18:56

Andrés Martínez

6813 silver badges14 bronze badges

Spectral norm inequality: Applying lipschitz continous function elementwise

Awarded Jul 19 at 11:57

VACT-1729

3442 silver badges13 bronze badges

Proof that Radius of Convergence Extend to Nearest Singularity

Awarded Jul 14 at 19:17

Sidharth Ghoshal

15.8k8 gold badges41 silver badges95 bronze badges

Computing the automorphism group of a $G$-bundle on a connected manifold for a finite group $G.$

Awarded Jul 13 at 19:31

JLA

6,2112 gold badges24 silver badges39 bronze badges

4-color coloring game.

Awarded Jul 12 at 15:21

Kevin Wang

1651 silver badge6 bronze badges

Show that two projections commute if and only if their respectively closed subspaces are compatibles

Awarded Jul 6 at 17:56

gen

1,4863 gold badges16 silver badges27 bronze badges

When does $p$-variation mesh size tend to $0$?

Awarded Jul 5 at 14:40

user479223

1375 bronze badges

Rotation matrix in R^3

Awarded Jun 30 at 18:32

Apoorv Mishra

1097 bronze badges

Ordinary Differential Equations - Poincaré Bendixson

Awarded Jun 26 at 17:56

Luiz Felipe Garcia

298 bronze badges

What calculus books should I use to learn more advanced calculus after Stewart's or Larson's book or Thomas' book

Awarded Jun 23 at 13:42

pie

8621 gold badge2 silver badges21 bronze badges

Why is an area preserving diffeomorphism a symplectomorphism (in $R^2$)

Awarded Jun 19 at 17:34

KVO

516 bronze badges

Inequality regarding kostka numbers in representation theory

Awarded Jun 16 at 18:16

Annonymous

5001 gold badge3 silver badges18 bronze badges

Proof of laminar matroid

Awarded Jun 13 at 10:16

hxiao

554 bronze badges

What are some conjectures of your own?

Awarded Jun 12 at 1:10

Joako

1,2151 gold badge6 silver badges28 bronze badges

Explanation of a proof from Stacks Project: Noetherian ring of formal powers series

Awarded Jun 8 at 15:05

themathandlanguagetutor

1,1296 silver badges16 bronze badges

Understanding proof that the gradient of a scalar field transforms as a vector under rotations.

Awarded Jun 5 at 20:25

Digitallis

3,0228 silver badges29 bronze badges

Non-autonomous linear difference inequation

Awarded Jun 5 at 4:55

metamorphy

38.1k16 gold badges46 silver badges115 bronze badges

Request for online reference to Hamilton's CBMS conference notes, Hawaii, 1989

Awarded Jun 4 at 19:26

Flumpo

3792 silver badges8 bronze badges

(post deleted or otherwise unavailable)

Awarded Jun 4 at 13:40

Ris

1,2428 silver badges17 bronze badges

Why on average, is $A[j]$ smaller than half of the elements of $A[1\dots j]$

Awarded Jun 3 at 23:18

user51462

5976 gold badges12 silver badges29 bronze badges

Loss of derivatives

Awarded Jun 2 at 19:49

Chris

5,11612 silver badges26 bronze badges

Let $f(x)=x\sin{(\pi x)}$. Spivak's solution manual seems to imply $f'(0)$ does not exist for this function. Why?

Awarded May 30 at 21:05

jordi

2691 silver badge10 bronze badges

SDE with stationary Log-normal distribution

Awarded May 28 at 14:25

user3277533

811 silver badge9 bronze badges

Give an example of function continuous for $x \in (a, b)$ and not differentiable in $a < x_{1} <\dots < x_{n} < b $, but differentiable in intervals.

Awarded May 25 at 11:46

qerty149

11616 bronze badges

Weak equality equation with a negative fractional Sobolev space.

Awarded May 24 at 20:41

OmnipotentEntity

1,2309 silver badges25 bronze badges

Integrating the exponential of distance to a convex bounded set

Awarded May 19 at 15:50

user13243542345452

191 silver badge9 bronze badges

How to rationalize the denominator $\frac{1}{1 + \sqrt[3]{5} - \sqrt[3]{25}}$

Awarded May 12 at 23:56

User

1,6792 silver badges21 bronze badges

Largest eigenvalue of the covariance matrix of a smooth unimodal probability distribution on the sphere?

Awarded May 11 at 8:06

Levent

4,77016 silver badges31 bronze badges

n-point Fekete set of the unit closed disc

Awarded May 8 at 11:41

Kolja

2,6101 gold badge11 silver badges23 bronze badges

Generalizing Poisson's binomial distribution to the multinomial case.

Awarded May 8 at 6:18

AspiringMat

2,2141 gold badge16 silver badges31 bronze badges

Nonlinear Equation Systems - Existence

Awarded May 7 at 13:09

Weierstraß Ramirez

95413 silver badges31 bronze badges

Calculate the homology of the mapping cone of $\Delta.$

Awarded May 6 at 11:50

Koro

10.9k5 gold badges19 silver badges34 bronze badges

Do equations of unconditional probability hold true after conditioning on both sides?

Awarded May 5 at 16:49

S.H.W

4,4814 gold badges21 silver badges56 bronze badges

Can I bound the spectral radius (or maximum eigenvalue) of a positive definite matrix?

Awarded May 1 at 8:08

James Yu

1397 bronze badges

A map $\phi:M\rightarrow N$ is smooth if and only if $g\in\mathfrak{F}(N)\implies g\circ\phi\in\mathfrak{F}(M)$

Awarded Apr 29 at 14:05

Pedro Gomes

3,8334 gold badges31 silver badges75 bronze badges

What are some useful problem solving strategies for real analysis?

Awarded Apr 26 at 6:06

SARTHAK GUPTA

1,3949 silver badges25 bronze badges

Trading Cards & Packs - compute the hypothetical number of packs to purchase to achieve a certain probability to complete a certain Cards' set

Awarded Apr 25 at 11:11

alvas

2710 bronze badges

Can this non-linear boundary-value problem be solved analytically?

Awarded Apr 24 at 22:56

R_B

1,5796 silver badges16 bronze badges

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