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Interesting thirty-seven Bountied Hot Week Month
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Growth rate of perturbations in linear stability analysis (expantion in powers of wavevector)

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questionerno8
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one answer
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Prove that $ \int_{\Omega} \Vert \nabla u\Vert^2 -6F(u)dx=-\int_{\partial \Omega} \Vert \nabla u\Vert^2 x\cdot \vec {n}d \sigma$

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K.defaoite
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two answers
forty views

Is there a relationship between these two integrals?

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Dark Malthorp
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two votes
three answers
one hundred and thirteen views

Conditional expectation and mutual independence

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Michael
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three votes
two answers
forty-four views

Almost sure convergence of means of arbitrary sample sets?

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Olivier Bégassat
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one answer
thirty-three views

What are some relations between the golden number or ratio $\phi$, and $\pi$?

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paulina
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one answer
six views

Propagation on simple connected graph

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Lieven
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-2 votes
one answer
twenty-two views

How do I calculate p-value in this problem?

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No Go
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one answer
eight views

How to deal with sequences that depends on all other terms

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lulu
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one answer
sixty views

Is it possible to calculate the distance in red?

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Chris Ze Third
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eight views

The probability of randomly generating finite abelian groups

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moonruleni9ne
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eight views

С ovariance matrix of the sum of random independent vectors

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Arthur_Kitsuragi
  • eighty-nine
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one answer
thirty-three views

finding dual problem of the function below

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nowhere
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four views

What's the best constant I can get for a tail bound on a squared $\mathcal{N}(0, \sigma^2)$ random variable?

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Ben Doner
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sixteen views

Partial derivative question for following form

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Nick
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two votes
two answers
2k views

Optimal strategy/expected value of red/blue ball game

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AlfredS
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three votes
one answer
forty-one views

Which representation of $\mathrm{SL} (2; \mathbb{C})$ does the tautological bundle on $ \mathbb{CP}^1 $ correspond to?

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I'm Representable
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one answer
seventeen views

Computing conditional expectation from a given random variable

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RobPratt
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zero answers
forty-five views

Approximating self-maps of $[0,1]$

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Alvaro Martinez
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two votes
one answer
forty-five views

Prove the following combinatorics equality

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RobPratt
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thirteen views

How can i use the Cauchy-Schwarz inequality here for this result in reproducing kernel Hilbert spaces and Gaussian processes

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RobPratt
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one answer
forty-two views

Question about the degree of a map

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user176372
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two answers
thirty-one views

Proof using power series of $\lim_{x \to 0} \frac{\sin x-\arctan x}{x^{3}}$

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user
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two answers
sixty-nine views

In how many ways can Alice, Bob, Charlie, David, and Eve split 18 marbles among themselves so that no two of them have the same number of marbles?

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RobPratt
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zero answers
thirty-six views

Biot-Savart Law Application Simplification Issues

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Alexander Ha
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three votes
one answer
thirty-three views

Stable categories are tensored over spectra

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Daniël Apol
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two votes
one answer
twenty-nine views

Is every collection of discrete random variables a function of independent random variables?

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user6247850
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Find an orthogonal basis for a set of vectors S

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Community Bot
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forty-nine views

Proving a differentiable relation.

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Tiago Coelho
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four votes
one answer
thirty-five views

Convergence of Step Functions Generated by Uniformly Distributed Random Points

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Amir
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two votes
zero answers
eighty-nine views

Reducing product of powers of logarithm

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Sam
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one answer
fifty-three views

Calculate the integral with the Gauss Green formula

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Jean Marie
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seven votes
two answers
seven hundred and eighty views
+100

Is there a known explanation for the Feynman point?

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Ethan Bolker
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zero answers
twelve views

Product of vector spaces with trivial Hom

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ca00
  • eleven
three votes
one answer
twenty-two views

Proving that restriction of $\sigma$-algebra is a $\sigma$-algebra

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Emilio Mora
  • ninety-eight
one vote
one answer
sixty-five views

Proof in measure theory

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Raoní Cabral Ponciano
  • two hundred and thirty-three
two votes
zero answers
twenty-six views

Understanding Chern Classes

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Field expansion
  • 2,231
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one answer
twenty-two views

multivariate distribution function

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Jean Marie
  • 82.9k
one vote
zero answers
ten views

Inequality involving trigamma function $\psi'$

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Bo Liu
  • one hundred and seventy-one
one vote
one answer
twelve views

What is the minimal-rank permutation representation of Th

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ahulpke
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zero answers
twenty-two views
+100

Convolution of mixture of Erlangs

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Leon
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two votes
one answer
three hundred and four views

$\frac{x^5-y^5}{x-y}=p$, give what p ,the diophantine equation is solvable

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user26857
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one answer
fifty-five views

Find the inellipse of a triangle with its major axis pointing in a given direction and with a given ratio of major to minor

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i don't know what i am doing
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two votes
one answer
seventy-nine views

Stokes theorem for currents on manifolds with corners

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Derivative
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-3 votes
zero answers
eleven views

Connect(G,k)={G is an undirected graph and uncomplete graph to wich you can add at most k edges to make it a clicque) is NP-Complete?

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Fabrizio Tempo
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zero answers
eight views

Projection of vectors from starting basis onto orthogonal complement

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user926356
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forty-four views

Understanding the time reversal path of an SDE

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learner with
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twelve views

Integration with respect to finite Radon measure

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SemiMath
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one vote
two answers
2k views

How to compare the entropy of two systems?

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Community Bot
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one vote
zero answers
one hundred and sixty-nine views

Variety $V=\{(x,y)\in k^2\mid xy=1\}$ is connected

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FD_bfa
  • 4,236
two votes
zero answers
twenty-one views

Explicit translation of Ramanujan’s condition for the Selberg Class?

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tripaloski
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two votes
one answer
six hundred and twenty-six views

Geometric proof of dot product and projection

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smichr
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twenty-eight views

Character table for a covering group of $\mathbb {Z}_n \times \mathbb {Z}_m $

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slowspider
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zero answers
ten views

Maximal value of $\sum_{n=1}^N z^T X(P_n X + I)^ {-1}z $ over positive semidefinite cone?

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Drew Brady
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four votes
zero answers
sixty views

Kalman Filter -- handling large covariance matrices with principal-component-like structures

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Matt Frank
  • five hundred and nine
zero votes
zero answers
eleven views

Projective Representations with Linearly Independent Ranges?

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Isochron
  • 1,355
-1 votes
zero answers
fourteen views

Setting Up Interrelated Bounds of Double Integral

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LateGameLank
  • sixty-one
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one answer
twenty views

Freitag-Busam proof of $\sum\limits_{\omega \in L \setminus \{0\}} |\omega|^{-s}$ converges when $s>2$.

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Martin R
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zero answers
seven views

Rational vector in integer matrix Kernel

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C Marius
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zero answers
nineteen views

Stuck on a proof on proving Galois extension must be normal and separable

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Dinoman
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one vote
zero answers
eighteen views

Why can't we derive the Left Contraction Rule in predicate logic?

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Alessandra12342
  • eleven
one vote
one answer
1k views

Need some help understanding notation for composite gauss quadrature formula

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Community Bot
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one vote
zero answers
thirty-two views

Elementary functions: Can an arithmetic operation be a composition?

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IV_
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zero answers
twenty-seven views

Simple Proof of Existence/Uniqueness of Differential Equations Defining $sin$ and $cos$.

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user357891
  • one hundred and fifty-five
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one answer
forty-eight views

Calculating a surface integral of a surface by another surface

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Teodoras Paura
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zero answers
twenty-three views

How to efficiently find a prime number-based canonical form for a finite, directed, multigraph?

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Daniel Donnelly
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zero answers
forty-two views

Method of Characteristics for this PDE and what's the problem with its domain?

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mfaczz
  • one
one vote
one answer
sixty views

A dog chasing a rabbit, but with half the speed, minimizing distance

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Gwen
  • 2,467
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zero answers
twenty-nine views

Equivalence class of $r_1 \exp(ix) = r_2 \exp(iy)$

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amWhy
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one answer
fifteen views

Discrete Hidden Markov Model with continuous observation

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Théo Michelot
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zero votes
one answer
eighteen views

Interpretation of the one-sided t-test

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Lieven
  • five hundred and eighty
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zero answers
thirty-two views
+50

Initial and boundary conditions for parabolic PDEs

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DanielKatzner
  • one hundred and forty-seven
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zero answers
twenty-two views

Determinant of a similarity matrix

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Mercury
  • one hundred and eighty-four
zero votes
zero answers
twenty-two views

Is fair division of a cake between n people but with n-1 value functions possible?

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Reza
  • thirteen
two votes
one answer
fifty views

Limit with a geometric interpretation

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Jean Marie
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zero answers
thirty-five views

Reference for unknown notion related to continuity

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Amanda Wealth
  • five hundred and twenty-one
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zero answers
twenty-two views

Counterexample for Exercise 36 of Chapter 5 in Carothers

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Θάνος Κ.
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three votes
one answer
forty-nine views

If $E \in \mathcal{A}$ satisfies $\mu(E)>0$, then there exists $F \subset E, F \in \mathcal{A}$ with $0 < \mu(F) < \infty$

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Grigor Hakobyan
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one answer
forty-two views

True or False: Inner product on $\mathbb{R}^2$ satisfying a specific norm.

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Lieven
  • five hundred and eighty
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zero answers
twelve views

Inverse discrete Lyapunov equation: given positive-definite $P > Q > 0$, what is $A$ when $A^TPA - P = -Q$

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Spencer Kraisler
  • 2,882
two votes
zero answers
twelve views

Bounds on the Kolmogorov distance

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sudeep5221
  • 2,771
zero votes
one answer
twenty views

Oscillations of Lagrange interpolation polynomials

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Lieven
  • five hundred and eighty
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zero answers
nine views

ADMM where finding minimum of Lagragian is hard

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Siddharth Ambekar
  • twenty-one
zero votes
one answer
forty-three views

Integral of a multivalued function

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Felix Marin
  • 90.3k
five votes
one answer
two hundred and sixty views

Elementary Differential Geometry before Manifolds?

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Ishan Jha
  • thirty-one
zero votes
zero answers
ten views

Convergence in $𝐿^1$ and continuos CDF , implies converges in $𝐿^1$ for the corresponding binarized succession?

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Riccardo Cadei
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zero votes
zero answers
ten views

Largest singular value of anti-triangular matrix

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Quantum Mechanic
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zero answers
fifty-one views

Convergence of the integral of $\log(1-x^n)$ on $[0,1]$

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Anne Bauval
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one vote
zero answers
twenty-six views

Ideal of multivariate polynomial

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user 1987
  • eight hundred and forty-four
one vote
zero answers
eleven views

Finite index Lie subgroup in Lie correspondence

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noparadise
  • four hundred and five
five votes
zero answers
eight hundred and fifty-three views

Explanation of theorem of natural irrationalities

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hbghlyj
  • 2,770
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one answer
eighty-four views

Prop. A.17 in Hatcher

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Jakobian
  • 10.4k
one vote
one answer
fifty-six views

Is it really easy to derive this expression for the flow of $\dot{x} = x^2$?

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Severin Schraven
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one answer
sixty-four views

Assessing the Convexity of an Optimization Problem

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Sil
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zero votes
one answer
thirty views

Geodesics for a certain model of $\widetilde{SL(2,\mathbb{R})}$: How to solve this integral $\int\frac{dx}{a+b\cos(x)}$ with $b> 0$, $a^2+b^2=1$?

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Lai
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zero votes
one answer
twenty-eight views

Prove that $N_f(xz) \leq N_f(x) + N_f(z)$

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none
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