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Interesting 35 Bountied Hot Week Month
2 votes
1 answer
12 views

Expected payoff of two dice scenario

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K. Jiang
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0 answers
2 views

Unclear solution or error? (Boyd, convex analysis)

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J.N.
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0 votes
2 answers
135 views

Need help in understanding the solution for this simple Olympiad preparation question

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Narasimham
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0 votes
0 answers
13 views

Honey bee recurring markov chain

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helloworld
  • 11
0 votes
2 answers
37 views

What is a predicate in first-order logic, formally?

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Dan Christensen
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3 votes
0 answers
42 views

Prove that $ \text{Out}(F_2) \cong \text{GL}_2(\mathbb{Z})$

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Shaun♦
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0 votes
0 answers
5 views

Are Compactness for FOL and the Pumping Lemma for RL/CFL two instances of the same phenomenon?

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Sho
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5 votes
0 answers
73 views
+50

Finding the minimum of a convex injective function on $\mathbb{Z}$ with fewest evaluations

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Benjamin Wang
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2 votes
4 answers
74 views

Compute $\lim_{x \to \infty } x(\sqrt{x^2 +2x} -2 \sqrt {x^2 +x} +x)$

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user
  • 157k
1 vote
0 answers
8 views

A condition that makes outer-measure finitely additive

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Ali
  • 11
1 vote
1 answer
3k views

Show that the product of two convex functions $f,g$ is convex, when both $f,g$ are positive and nondecreasing

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Enrico M.
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2 votes
3 answers
2k views

$g^k$ is a primitive element modulo $m$ iff $\gcd (k,\varphi(m))=1$

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czech-spanier
  • 9,478
1 vote
1 answer
22 views

Proof of Zarantonello's Inequality

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angryavian
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1 vote
1 answer
131 views

Compute $\int_{-\infty}^\infty \frac{dx}{\left(\frac89x^2+\frac23\right)\left({\frac{x^2}{3}+1}\right)^{3/4}}$

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phirate
  • 2,502
-1 votes
1 answer
23 views

Why Does an Element in All Subsets Belong to A∖(B∖C)?

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John Douma
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0 votes
1 answer
69 views

Why do we write general trigonometric solutions in terms of rational numbers?

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bjcolby15
  • 3,861
1 vote
0 answers
13 views

Probability that a random graph on $n$ vertices contains a triangle - what's gone wrong?

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Samuel Hitchcock
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3 votes
0 answers
64 views

Continuity of optimal value of a functional on a Hilbert space

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zt wang
  • 399
0 votes
0 answers
7 views

(Proof review) The product of symmetric unimodal polynomials is again symmetric unimodal.

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Daniel Checa
  • 516
1 vote
0 answers
34 views

Double integral of $\tan^3(x)$

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Sine of the Time
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1 vote
0 answers
63 views

Solution satisfies boundary condition but does not satisfy the PDE $\nabla^2 u(r,\theta) = f(r,\theta)$. Does anyone see the issue?

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Researcher R
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0 votes
1 answer
17 views

How to determine the intervals in which a function (which is a sum of two trigonometric functions) is positive.

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Ryszard Szwarc
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4 votes
1 answer
1k views

Smooth varieties are local complete intersection

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CommunityBot
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1 vote
0 answers
23 views

How to evaluate $\int_0^1 \frac{\arctan(x)}{x} \ln^2(1 - x) \, dx$

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Martin.s
  • 5,076
1 vote
1 answer
43 views

What is the Zhu's algebra for Heisenberg VOA

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AXidenT
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0 votes
2 answers
30 views

Does an exponential or any generating function exist for a sequence which consists of every $4$^th Hermite polynomial?

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Semiclassical
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0 votes
0 answers
7 views

Get another lattice adding edges

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Fabius Wiesner
  • 2,155
3 votes
1 answer
21 views

Cardinality of connected LOTS

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Jakobian
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1 vote
0 answers
15 views

Determining the number of integer solutions by method of binomial coefficients.

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N. F. Taussig
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0 answers
6 views

About the symmetrizable graphs

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Farrokh
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2 votes
1 answer
50 views

Question on Tonelli theorem for series.

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pschz
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1 vote
0 answers
10 views

Reference request: functionals defined on diffusion processes

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J. W. Tanner
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5 votes
3 answers
296 views

If $G$ is a locally compact group and $L^1(G)$ is unital, then $G$ is discrete.

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Mittens
  • 41.5k
5 votes
2 answers
393 views

Should Euler be credited with Prime Number Theorem?

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Jean Marie
  • 84.5k
2 votes
2 answers
103 views

A countable inductive first-order theory which has non existentially-closed (e.c) model has a non e.c. model of any infinite size

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Oria
  • 318
6 votes
2 answers
182 views

How did Euler know $X=6^{128} + 1$ is divisible by $Y=257$

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J. W. Tanner
  • 62k
1 vote
2 answers
104 views

Curvature of a connection and Lie bracket of vector fields

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Chris
  • 3,948
1 vote
0 answers
19 views

Asymptotic analysis of the finite product

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user824530
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7 votes
1 answer
71 views

Can you lift an automorphism of a finitely generated module to an automorphism of a finitely generated free module?

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Martin Brandenburg
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1 vote
0 answers
42 views

Can every element in a RKHS be represented as a series in kernel functionals?

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Flo
  • 350
0 votes
0 answers
49 views

Is the complex function $e^\sqrt{x}+e^{-\sqrt{x}}$ differentiable at $x=0$

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Irene
  • 522
0 votes
1 answer
26 views

Asymptotic distribution of repetitions in binary sequence

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Riemann
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0 answers
8 views

How to optimize for rotation and translation in 3D for the next equation?

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tricostume
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3 votes
0 answers
48 views

A continuous function can be bounded from above by a smooth 'adapted' function?

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Francesco_Trig
  • 304
5 votes
1 answer
30 views

Are these non-homogenous Poisson processes distinguished?

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user394334
  • 1,424
1 vote
0 answers
8 views

The weight matrix in weighted least squares and the inverse of the covariance matrix

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CuriousMind
  • 1,624
1 vote
0 answers
7 views

Case where limit of sequence of discrete measures is discrete

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Nik Quine
  • 593
0 votes
1 answer
49 views

For any measurable space $(X,\mathscr{M})$, are all weighted counting measures purely atomic?

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VPPVPVVP
  • 56
0 votes
1 answer
41 views

How can we justify why $\mathbb{E}[X] = 1 + \frac 1 2 \mathbb{E}[X]$ here?

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Nic
  • 1,164
2 votes
1 answer
49 views

"Connectivity" of a surface in Hirsch's book

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Thorgott
  • 13k
1 vote
1 answer
15 views

Continuity and Surjectivity of Distance-Expanding Functions

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pschz
  • 21
0 votes
1 answer
34 views

Find sum of $(1/2^r) ^{n+r}C_r$, where $r$ goes from $0$ to $n$

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Sayan Dutta
  • 9,872
1 vote
2 answers
1k views

Special Relativity-Book

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CommunityBot
  • 1
0 votes
0 answers
10 views

A question on linear representation of representable group functors

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Eloon_Mask_P
  • 751
12 votes
1 answer
279 views

A family of product formulas for $\pi$ using prime numbers

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Oscar Lanzi
  • 42.3k
0 votes
0 answers
8 views

Computational Time of Interior Point Methods Per Iteration for Nonconvex QP

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mirhan ürkmez
  • 1
1 vote
0 answers
10 views

Fiber over a prime ideal calculation

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Ruchira Mukherjee
  • 51
0 votes
0 answers
19 views

Derivation of the Explicit Formula for All Schwartz Functions

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APIs
  • 505
0 votes
1 answer
41 views

How do the two different definitions of crystal on infinitesimal coincide?

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user135743
  • 433
16 votes
4 answers
12k views

Proving the Cantor Pairing Function Bijective

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Antonio Maria Di Mauro
  • 4,940
1 vote
1 answer
18 views

Showing almost sure convergence of Bayes Factor to zero

Wei's user avatar
Wei
  • 1,096
3 votes
2 answers
48 views

Integrating Legendre Polynomials over half range using rodrigues formula

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Hug de Roda
  • 3,651
5 votes
1 answer
105 views

Why, intuitively speaking, are determinants related to pullbacks of alternating forms?

Joe's user avatar
Joe
  • 21.3k
0 votes
0 answers
49 views

A continuous differential equation with no solution

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Jack J.
  • 1,070
0 votes
1 answer
25 views

Solution of a system of differential equations by the Laplace method

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Jaroslav Nikiforov
  • 49
-1 votes
0 answers
19 views

Sufficient condition for continuity at a point ( x0,y0)

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Akhil Daipuriya
  • 1
0 votes
0 answers
42 views

Is the product of primes from $n/2$ to $n$ always less than $2^n$?

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Semiclassical
  • 17.4k
2 votes
2 answers
39 views

Value of a specific triple sum

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Greg Martin
  • 84.5k
1 vote
0 answers
22 views

Infinite number of decompositions into sum of four cubes

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uvdose
  • 99
1 vote
1 answer
41 views

Compactness in the weak topology

mudok's user avatar
mudok
  • 771
1 vote
0 answers
80 views

Prove parallel vector has two directions

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Awesome126
  • 11
0 votes
0 answers
14 views

Why is Coherence Factor Not Always 1 (Signal Processing)

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Neil Sriram
  • 1
0 votes
0 answers
21 views

$\kappa$-filtered Ordinal

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user267839
  • 8,181
-1 votes
0 answers
29 views

Theoretically possible to construct a zeta function absent of a group structure?

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zeta space
  • 104
1 vote
2 answers
60 views

Can you find $\angle CFB$?

D S's user avatar
D S
  • 5,406
0 votes
0 answers
29 views

If $p_n={{t_n}\over {t_n+1}}$, then $p_n\sim t_n$ .

Power's user avatar
Power
  • 109
3 votes
6 answers
301 views

Why am I getting two different answers when the countour integral is performed in two different ways?

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Kritiker der Elche
  • 4,749
1 vote
0 answers
28 views

Construction of retraction morphism onto the central fiber of the family

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Ted Shifrin
  • 118k
0 votes
0 answers
26 views

Using $\epsilon$-$\delta$ method prove that $\lim_{(x,y)\rightarrow (\pi,\pi/2)}y\sin(x-y)=\frac{\pi}{2}$

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2'5 9'2
  • 55.3k
2 votes
0 answers
31 views

Estimating a solution $u \in H^s(\mathbb{R}^3)$ of the incompressible Euler equation in terms of $|\nabla u|_{L^{\infty}}$

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MathMatthias
  • 23
4 votes
1 answer
152 views

Gortz, Wedhorn, Algebraic Geometry, Proof of Proposition 3.52 - why is there at most one reduced subscheme structure?

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KReiser
  • 68.7k
0 votes
0 answers
17 views

The category of projective modules over a ring

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Gheorghe Bucătaru
  • 31
3 votes
1 answer
309 views

Socle of representations of Klein Four group over $\mathbb{F}_2$

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Bockman Cheung
  • 1
1 vote
0 answers
8 views

Bounds ofn expectation of maximum of moduli of $n$ normal variates

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AgnostMystic
  • 1,780
0 votes
0 answers
21 views

Completed divided power algebra

walkar's user avatar
walkar
  • 3,992
0 votes
0 answers
31 views

Krull dimension of $R\langle t\rangle$

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Ben Steffan
  • 5,969
0 votes
0 answers
6 views

Optimal balanced ternary set of weights - infinite version

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badjohn
  • 8,607
1 vote
1 answer
15 views

Conditional distribution of $X$ given that $Y-X=c$ and X and Y are Bivariate Gaussian (not independent) distributed with covariance matrix, $\Sigma$

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Wei
  • 1,096
0 votes
0 answers
18 views

Find a perfect matching

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Need_MathHelp
  • 1,239
0 votes
0 answers
11 views

Understanding discriminant of composite field via representation theory

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WLOG
  • 1,346
5 votes
1 answer
96 views

If a union of $n$ triangles is a simple $M$-gon, find the maximum of $M$

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Giedrius Alkauskas
  • 363
0 votes
0 answers
16 views

What sound would a dripping faucet produce if the dripping pattern had two distinct frequencies from a mathematical perspective?

Mark's user avatar
Mark
  • 7,944
1 vote
0 answers
22 views

Show that $\mathcal{L}^{-1}\left\{\frac{\Gamma(n)}{s^n}e^{-\frac{2a}{s}}{}_0F_1\left(n,\frac{a^2}{s^2}\right)\right\}(1)={}_0F_1\left(n,-a\right)^2$

QLoop's user avatar
QLoop
  • 53
0 votes
0 answers
9 views

Finding through programming the largest norm ball $S$ that $f(S)\subseteq (a,b)$

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dhliu
  • 77
5 votes
0 answers
90 views

Center of factors of a finite $p$-group, obtained from minimal normal subgroups

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shankfei
  • 439
0 votes
0 answers
12 views

Use of probability/statistics in game theory

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FunctionalCoder
  • 1
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