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2 votes
1 answer
135 views

A limit of the hyperfactorial and Barnes G-function

0 votes
1 answer
761 views

Sealed bid first price auction with 2 players.

0 votes
0 answers
3 views

Finding the matrix $A$ of a projective transformation $\pi_A$

-1 votes
0 answers
9 views

Find x in 2, 23, 10, x, 26, 331

3 votes
5 answers
516 views

How many elements are present in the subset of a null set?

3 votes
4 answers
237 views

Complex logarithm base 1

1 vote
0 answers
32 views

Prove that $4\int_0^1 \frac{\operatorname{Li}_2(x(1-x))}{1-x+x^2}\mathrm{d}x=\int_0^1 \frac{\ln x \ln(1-x)}{1-x+x^2}\mathrm{d}x$

6 votes
3 answers
412 views

If $a^4+b^4+c^4=3$ so $\sum\limits_{cyc}\frac{1}{3-2ab}\leq3$

1 vote
0 answers
88 views

uniqueness of fixed point using a non-linear function

0 votes
0 answers
12 views

Why this word has the vertice of 2

-1 votes
1 answer
20 views

prove that the torus parametrization is an injective function

1 vote
0 answers
19 views

Asymptotic expansion as $x \rightarrow \infty$ of $\sum_{n \le x} \lfloor\frac{x}{n}\rfloor \left\{{2\sqrt{\lfloor\frac{x}{n}\rfloor}}\right\}$

2 votes
3 answers
726 views

Does $x \propto y$ and $x \propto z$ imply $x \propto yz$ or $x^2 \propto yz$?

2 votes
1 answer
1k views

Proof of Burnside's theorem

3 votes
1 answer
34 views

Chern class of tangent bundle of hypersurface of CP^n viewed as complex of coherent sheaves

1 vote
1 answer
33 views

Can the magnitude of a complex number have a complex number?

0 votes
0 answers
11 views

A closed subset of $\mathbb{R}^k$ without transversal curves?

0 votes
0 answers
3 views

Proving hermite conditions of a polygonal patch

0 votes
1 answer
27 views

Is the topological type of the polygons with the following words orientable

1 vote
1 answer
26 views

Changing the order of integration in an iterated integral with a single varible function

0 votes
0 answers
18 views

How to depict a positive normal vector at boundary point of an oriented manifold

5 votes
6 answers
267 views

Find the ratio $\frac{AC}{BC}$ given a specific configuration of equilateral triangles around a right triangle (need Euclidean geometry approach)

15 votes
2 answers
517 views

Conjecture: $\sum_{j=1}^J\arcsin\left(r(j)\sqrt{C(j)}\right)\neq2\pi$, for non-negative rationals $r(j)$ and distinct primes $C(j)$

2 votes
0 answers
41 views

If $\varphi(f)$ is Riemann integrable for each $\varphi \in E^*$, then is $f$ Riemann integrable?

6 votes
1 answer
387 views
+50

Maximizing count of subsequences for 3 or more permutations.

3 votes
0 answers
32 views

Closed form for $\int_{0}^\infty e^{-ax^2}\operatorname{erf(px)}\operatorname{erf(qx)}\operatorname{erf(rx)}\operatorname{erf(sx)}\,dx$?

3 votes
1 answer
3k views

Determinant of Skew-Symmetric Matrices

-3 votes
0 answers
49 views

Asymptotic equivalence of a binomial Sum :

2 votes
1 answer
29 views

Showing order $p^3$ groups are regular for odd $p$

0 votes
1 answer
25 views

Applying Leibniz's Rule to Double Integrals with Variable Limits

5 votes
1 answer
1k views

Hitting time of Brownian motion against a square root curve

0 votes
0 answers
13 views

Term for bivariate homogeneous tensor

3 votes
2 answers
106 views

Compute $\int\left(5\cos^3(t)-6\cos^4(t)+5\cos^5(t)-12\cos^6(t)\right)\,\mathrm{d}t$ using some results in Linear Algebra

1 vote
1 answer
18 views

The set $\mathcal{S}(R)$ of all radical ideals of a ring $R$ might form a boolean ring with $\circ=$ ideal addition and $\oplus=$ a certain quotient.

1 vote
0 answers
61 views

Tricks for Computing the Center of a Group

0 votes
1 answer
35 views

What is the probability that a bus will skip the first stop?

1 vote
1 answer
55 views

Possible arrangements for any n number of distinct cubes

1 vote
1 answer
762 views

Specific examples of an increasing and decreasing function

202 votes
0 answers
6k views
+50

Sorting of prime gaps

2 votes
1 answer
50 views

Random Distribution between urns

4 votes
3 answers
683 views

On the proof of Buckingham π theorem

3 votes
4 answers
236 views

How to find the maximum length of chord cut by a right angle inside a circle

0 votes
0 answers
8 views

Conditions for a Fourier-windowed quadratic form to define a finite-range or exponentially decaying interaction?

3 votes
1 answer
896 views

Multinomial Distribution to Binomial Distribution and Joint Probability Function

1 vote
0 answers
15 views

Restrictions of Knight's Tour on Circular Board

5 votes
4 answers
330 views

If $a^2+b^2+c^2=1$ so $\sum\limits_{cyc}\frac{1}{(1-ab)^2}\leq\frac{27}{4}$

1 vote
1 answer
31 views

Any 'locally butterfly' graph be constructed as line graph from a 3-regular, triangle-free graph: Can this be generalized to locally windmill graphs?

5 votes
1 answer
105 views

Quintic residues and $p=x^2+125y^2$

1 vote
1 answer
1k views

Solving $\sin(x) + \sin\left(2^{(n+12)/12}x\right) = \sin(x+w) + \sin\left(2^{(n+12)/12}(x+w)\right)$ for $w$

2 votes
1 answer
53 views

Simplify expression for lemniscate tangent function

1 vote
1 answer
803 views

Jensen inequality for concave functions

2 votes
1 answer
97 views

Reversibility of a random walk

2 votes
1 answer
757 views

Element with maximum magnitude in $A \leq \max(\sigma_{i})$, where $\sigma_{i}$ is singular values of A

0 votes
0 answers
17 views

Seeking resources about multiple directed acyclic graphs/topological orderings

2 votes
1 answer
142 views

Is my understanding correct about the inverse relationship between derivatives and integrals?

0 votes
0 answers
114 views

Why do vectors behave as derivation on functions

1 vote
1 answer
790 views

Number Plate Problem

5 votes
1 answer
198 views

Generalization of Schwarz's Lemma

2 votes
2 answers
200 views

Maximum Travelling Salesman Problem on the integer line

3 votes
0 answers
59 views

Definition of hyperprojective sets

3 votes
0 answers
308 views

Is the Imaginary Golden Ratio Unique?

0 votes
0 answers
52 views

Central Limit Theorem via Fixed Point Theorem and Entropy

1 vote
2 answers
162 views

Prove that the iterate $f^{n}$ is a constant function.

3 votes
1 answer
768 views

Convergence in norm independent of the choice of the norm.

2 votes
1 answer
569 views

Choosing distinct balls to put into identical urns.

3 votes
1 answer
72 views

Invariant trees of outer automorphism of free groups

0 votes
2 answers
774 views

Does $Ax=b$ have a solution for every vector $b$ in $\mathbb{R}^3$

4 votes
1 answer
147 views

Book Recommendation for Vector Bundles

0 votes
1 answer
28 views

Decomposition of von Neumann algebra in semi-finite and purely infinite part

3 votes
1 answer
63 views

Does there exist a prime decomposition for every possible combination of ramification and inertia degree

1 vote
0 answers
95 views

Is the proposition $P$ equivalent to the axiom of regularity

1 vote
1 answer
90 views

Why don’t textbooks mention the 2-dimensional metric completion model of $S^2$?

0 votes
0 answers
37 views

Probabilistic behavior of Carmichael numbers

2 votes
1 answer
258 views

Symmetric product of projective planes

14 votes
2 answers
620 views

Confusion about differentials

0 votes
0 answers
16 views

isometry group of an orbifold is the quotient of the isometry group of its cover

0 votes
0 answers
74 views

Proof of Euler identity using ODE

2 votes
0 answers
58 views

The Intuition behind the nim game and the XOR?

7 votes
1 answer
761 views

Relative effective Cartier divisors

1 vote
0 answers
30 views

Any easier ways to prove an explicit form for a generated $\sigma$-algebra besides transfinite induction?

15 votes
0 answers
416 views
+100

Determining whether $A\subset X = \left\{0,1,\ldots,n\right\}$ can be written as $A=B+C$

1 vote
0 answers
43 views

Does each partial derivative vanish on the path from a local to a global minimum?

0 votes
3 answers
768 views

Prove linearity of map involving dual space

3 votes
0 answers
102 views

Number of integer solutions to $\sum_{i=1}^{10} x_i = 100$ with $2 \le x_i \le 21$

2 votes
0 answers
43 views

Area estimate of the intersection of ball and sphere

0 votes
1 answer
83 views

Maximisation of functions of the form $f(x) = \sqrt{1 - x^2} + (ax+b)x$

0 votes
0 answers
96 views

Getting different answers for integration problem: $\int_0^2 x d( \{x\} )$

1 vote
0 answers
66 views

Quotient of $\mathrm{GL}_2(\mathbb{C})$ by a finite group

1 vote
1 answer
229 views

Does "the preimage of a closed interval is a finite union of closed intervals" imply $f:\mathbb{R}\to\mathbb{R}$ is continuous?

8 votes
4 answers
525 views

Dummy variable rule for indefinite integrals?

0 votes
0 answers
17 views

How to represent a standard linear program (LP) as a semidefinite program (SDP)?

5 votes
1 answer
4k views

Does $\mathcal P(A \cap B) = \mathcal P(A) \cap \mathcal P(B)$ hold? How to prove it?

-1 votes
1 answer
260 views

Distributive law on right in ordinals

2 votes
1 answer
203 views

Fiber dimension of finitely presented dominant morphisms of irreducible schemes

2 votes
1 answer
90 views

Demonstration Written in Formal Language

4 votes
1 answer
217 views

Any upper bound for $\sum_{i=1}^{n} v_i^\mathsf{T} \left( \left( \alpha I + \sum_{k=1}^{i} v_k v_k^\mathsf{T} \right)^{-1} \right)^{2} v_i$?

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