Famous Question - Badge - Mathematics Stack Exchange

Famous Question

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Mutual Information Chain Rule

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rabatt13

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What is the difference between gradient of divergence and Laplacian?

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Derby Moose

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Fourier transform of $1/x^2$ given by Mathematica

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Balbadak

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Green's Function for 2D Poisson Equation

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ClassicStyle

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What is dimension over $\mathbb R$ of the space of $n\times n$ Hermitian matrices? [duplicate]

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jasmine

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Domain of arctan(1/x)

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TheEconomist

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Prove or disprove that if A, B, and C are nonempty sets and $A \times B = A \times C$, then $B=C$

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Elliott de Launay

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Why is/isn't the derivative of a differentiable function continuous?

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Jana

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If $A$ and $B$ are symmetric matrices, so is $A+B$

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Maxime Ellehooq de Montbron

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How can I prove that (p→q)∧(p→r) ⇔ p→(q∧r)

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daniel hs

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How is exponentiation defined in Peano arithmetic?

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UQT

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Computing Fourier transform of power law

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knzhou

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Fubini's Theorem for Infinite series

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Jose Antonio

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What am I proving with the Havel-Hakimi theorem?

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Siyah

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prove change of basis matrix is unitary

Awarded Nov 26 at 15:12

i_a_n

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What is the Adjoint of inverse of a matrix?

Awarded Nov 26 at 13:53

Koushik Sahu

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Solve $x^3 +3x -4 =0$ in Real numbers

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titansarus

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Cardinality of all cardinalities

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kennytm

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Can the curl operator be generalized to non-3D?

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Tobias Kienzler

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Continuous Poisson Distribution

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Кирилл Волков

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Show that $\frac{y}{x^2+y^2} $ is harmonic except at $y=0,x=0$

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Tiger Blood

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Market Making Card Game Strategy

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Krish

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Integral of Thomae's function

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MT_

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What is the kernel of the tensor product of two maps?

Awarded Nov 23 at 10:19

Lao-tzu

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How do I evaluate the Lebesgue measure of a ball?

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Number 9

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Quickest way to determine a polynomial with positive integer coefficients

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gt6989b

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Representations of the symmetric group $S_3$

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sky90

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Tensor product of localization is isomorphic to localization of tensor product

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Student

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Asymptotic for binomial coefficients

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VikaV

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Best textbook for Geometric Measure Theory [closed]

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Trajan

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Number of Bit Strings with Five Zeros

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muqsitnawaz

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Is composition of covering maps covering map? [duplicate]

Awarded Nov 20 at 18:36

mendes

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Aggregating standard deviation to a summary point

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Dave Clarke

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Angle bracket and sharp bracket for discontinuous processes

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Alfie

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What is the connection between Jordan Canonical Form and minimal polynomial?

Awarded Nov 19 at 19:49

learning_math

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Which perfect squares can be written as the sum of two squares?

Awarded Nov 19 at 2:28

Syed Shibli

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thoughts about $f(f(x))=e^x$

Awarded Nov 18 at 16:47

uforoboa

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Motivation for spectral graph theory.

Awarded Nov 18 at 9:50

Alexander Gruber♦

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Fourier transform of a radial function

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anonymous

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Truth or lie? "At least one [of the two] of us is a liar."

Awarded Nov 17 at 19:58

Attaque

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Permutation with Duplicates

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Don Wakefield

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Jensen's inequality proof explanation

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Basem Fouda

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Equation of a great circle passing through two points

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Hex4869

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Given the volume of a grain silo and the height of the cylinder of the silo, solve for the radius.

Awarded Nov 16 at 17:33

ecvolm

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What is the difference between partial order relations and equivalence relations?

Awarded Nov 16 at 10:42

SAR

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Sylvester's criteria and Negative definite Matrices.

Awarded Nov 16 at 1:48

cmi

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If $f: \Bbb{N} \to \Bbb{N}$ is strictly increasing and $f(f(n))=3n$, find $f(2001)$. [duplicate]

Awarded Nov 16 at 0:46

Bhaskar Vashishth

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Connection between Legendre polynomial and Bessel function

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Fabian

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Expectation of sample variance

Awarded Nov 15 at 10:47

Nascimento de Cos

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A rearrangement of an absolutely convergent series converges absolutely to the same limit

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user125104

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What is the most cited mathematical paper?

Awarded Nov 13 at 20:27

Mizar

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Codomain of a function

Awarded Nov 13 at 16:26

Jonathan.

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differentiate with respect to a function

Awarded Nov 13 at 15:28

Badshah

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Why is the geometric multiplicity of an eigen value equal to number of jordan blocks corresponding to it?

Awarded Nov 13 at 14:18

MathMan

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What is the most elementary proof that $\lim_{n \to \infty} (1+1/n)^n$ exists?

Awarded Nov 12 at 22:20

marty cohen

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Betting on the appearance of HHT or HTH in a series of coin flips

Awarded Nov 12 at 6:06

Chaim

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Proofs of Sylow theorems

Awarded Nov 11 at 18:31

Karolis Juodelė

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What exactly is an improper subset?

Awarded Nov 11 at 11:26

Raknos13

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Riemann Integrable implies Lebesgue Integrable

Awarded Nov 10 at 18:12

SAS

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Proving that a doubly-periodic entire function $f$ is constant.

Awarded Nov 10 at 18:12

Ivo Terek

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