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active 43featured hot week month

3

votes

0

answers

52

views

+50

Relation between factor graph and conditional probability distribution

probability-theory random-variables machine-learning

apr 24 at 22:38 v4r 50

5

votes

0

answers

94

views

+50

Constant Rank theorem for domain with nonempty boundary

differential-geometry manifolds

apr 24 at 23:10 Ted Shifrin 559

64

votes

2

answers

6

kviews

+50

Topology: The Board Game

general-topology algebraic-topology soft-question education

apr 28 at 5:06 George 1

1

vote

1

answer

70

views

+50

Examples of truly abstract evolution PDEs?

functional-analysis pde sobolev-spaces

apr 25 at 7:53 maximumtag 76

2

votes

0

answers

143

views

+50

Is this incidence variety in $\mathbb{P}^2 \times \mathbb{P}^2$ isomorphic to a variety in $\mathbb{P}^1 \times \mathbb{P}^1$?

algebraic-geometry

apr 25 at 21:24 Ricardo Buring 134

4

votes

0

answers

55

views

+50

Equivalence of two definitions of Whitehead Torsion

algebraic-topology

apr 26 at 1:31 user39598 66

6

votes

1

answer

113

views

+50

Why is a path-connected topological space homotopy equivalent to the classifying space of its loop space?

algebraic-topology

apr 28 at 19:03 user32240 4,446

5

votes

0

answers

57

views

+50

diagonalization procedure for stochastic processes

stochastic-processes

apr 26 at 9:41 hulik 126

4

votes

1

answer

95

views

+50

Convergence domain: $\{(z,w):|z|^2+|w|^2 < 1\}$

several-complex-variables

apr 26 at 19:16 Yury 2,988

0

votes

2

answers

191

views

+100

Determine the result of parallel translating the vector $(0, 0, 1)$ once around the circle $x^2+ y^2=a^2, z=0$

differential-geometry

apr 27 at 7:34 bubba 4,048

1

vote

1

answer

101

views

+50

What does Schwarz's lemma tell us in this case?

complex-analysis

apr 26 at 21:42 Cortizol 1,156

5

votes

1

answer

67

views

+50

Umbral calculus with negative indices (and powers)

sequences-and-series reference-request generating-functions

2d ago vonbrand 5,631

2

votes

2

answers

117

views

+50

Interchanging closed operators and integrals

calculus functional-analysis measure-theory operator-theory

apr 27 at 11:36 UrošSlovenija 125

8

votes

2

answers

125

views

+50

Asymptotics of the sum of squares of binomial coefficients

probability-theory asymptotics binomial-coefficients summation

apr 28 at 18:08 Alex Ravsky 2,263

22

votes

2

answers

551

views

+50

PDEs on manifold: what changes from Euclidean case?

pde manifolds riemannian-geometry

apr 27 at 17:40 michael_faber 49

2

votes

0

answers

38

views

+50

von Neumann alternating direction algorithm

convex-analysis convex-optimization

apr 27 at 18:20 Sachin 761

0

votes

2

answers

72

views

+50

Differential calculus - Reviewing and drawing graph

homework calculus functions

2d ago Taladris 111

1

vote

0

answers

57

views

+100

closed orbits in the flow of the Reeb vector field of a contact manifold

contact-topology

2d ago Community♦ 1

4

votes

1

answer

81

views

+50

Dual of a holomorphic vector bundle

homework vector-bundles holomorphic-bundles

apr 28 at 11:15 user01123581321345589144... 774

1

vote

0

answers

139

views

+50

Problem of Scottish Book

functional-analysis reference-request

apr 28 at 13:00 Shaktal 3,178

4

votes

3

answers

181

views

+50

$f: \mathbb{R} \to \mathbb{R}$ satisfies $(x-2)f(x)-(x+1)f(x-1) = 3$. Evaluate $f(2013)$, given that $f(2)=5$

functions induction

1d ago John Marty 370

8

votes

0

answers

95

views

+50

$\int_0^1\mathrm{d} u_1 \cdots \int_0^1\mathrm{d} u_n \frac{\delta(1-u_1-\cdots-u_n)}{(u_1+u_2)(u_2+u_3)\cdots(u_{n-1}+u_n)(u_n+u_1)}$

calculus integral definite-integral

apr 28 at 17:33 Eugene 35

1

vote

1

answer

119

views

+100

Prove an integral limit

limit integration

2d ago Macavity 1,568

0

votes

1

answer

38

views

+50

To define two random variables that satisfy a condition

probability-theory

apr 28 at 17:50 user11775 78

2

votes

1

answer

69

views

+50

Let $n$ be an integer $\geq 2$ and let $M_n(\Bbb R)$ denote…

linear-algebra vector-spaces

apr 28 at 18:37 user33640 1,035

15

votes

0

answers

188

views

+200

How do I calculate the 2nd term of continued fraction for the power tower ${^5}e=e^{e^{e^{e^{e}}}}$

numerical-methods powers continued-fractions tetration big-numbers

2d ago Vladimir Reshetnikov 1,130

3

votes

2

answers

106

views

+100

Confidence interval of a random variable with infinite mean. (St. Petersburg paradox)

probability random-variables

14h ago Tim 198

4

votes

1

answer

81

views

+50

Snags when discovering the asymptotic behavior of an integral

asymptotics definite-integral

5h ago Antonio Vargas 6,416

3

votes

0

answers

26

views

+50

Triangulation of a manifold adapted to a submanifold

general-topology differential-geometry algebraic-topology

2d ago Ulysse Mizrahi 56

5

votes

0

answers

132

views

+50

Show that f is a polynomial

real-analysis complex-analysis polynomials fourier-analysis several-complex-variables

2d ago DinkyDoe 401

4

votes

0

answers

72

views

+50

Monotone matrix norms

linear-algebra norm

2d ago FASCH 336

5

votes

0

answers

223

views

+50

Condition of an eigenvector problem

homework linear-algebra matrices

2d ago Shana Kugimiya 70

1

vote

1

answer

120

views

+150

Enrichment of a Semi-additive Category Over Abelian Monoids

category-theory

2d ago Qiaochu Yuan♦ 115k

16

votes

5

answers

320

views

+50

limit of : $a_{n+2} =\frac{1}{a_n} + \frac{1}{a_{n+1}}$

real-analysis sequences-and-series limit recurrence-relations

1d ago YKall 331

10

votes

1

answer

138

views

+50

An unusual type of linear algebra problem

linear-algebra probability-theory

1h ago Kevin Costello 971

2

votes

0

answers

45

views

+50

Degree structure of $1$-Generic Set

logic computability

23h ago Chris 102

12

votes

2

answers

141

views

+50

Is there a “tree-like” proof of compactness theorem in the case of uncountably many variables?

logic set-theory compactness trees

15h ago Martin Sleziak 20.1k

9

votes

2

answers

209

views

+50

Evaluate: $\int_0^{\pi} \ln \left( \sin \theta \right) d\theta$

complex-analysis integral logarithms

8h ago Byron Schmuland 15.2k

2

votes

0

answers

58

views

+50

Two questions re: $\sum_{n=1}^{\infty}n^{-p_{n}}$

elementary-number-theory reference-request

8h ago Fred Kline 290

4

votes

1

answer

78

views

+150

Interchange supremum and expectation

measure-theory probability-theory stochastic-processes

50m ago Tim 198

2

votes

0

answers

70

views

+100

$G$ is locally compact semitopological group. There exists a neighborhood $U$ of $1$ such that $\overline{UU}$ is compact.

abstract-algebra general-topology topological-groups uniform-spaces

4h ago CutieKrait 1,884

2

votes

0

answers

27

views

+100

graphs and homotopy extension property

algebraic-topology homotopy-theory

3h ago Danial 5

2

votes

0

answers

63

views

+100

Inverse images under universally surjective morphisms

algebraic-geometry

2h ago Heidar Svan 48

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