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1 vote
0 answers
14 views

Can a nonconstant function that is invariant to this affine transformation exist?

0 votes
2 answers
58 views

Is There a Notation for "Out of" That Does Not Connotate a Fraction?

-1 votes
0 answers
4 views

How Do I simplify This Boolean Expression?

1 vote
1 answer
27 views

Find $\sum_{k=1}^n\frac{x_k}{x_k-1}$, where $x_1,\dots,x_n$ are the roots of $x^n - 3x^{n-1} + 2x + 1$.

0 votes
0 answers
6 views

Is every subset of C^n whose coordinates are real not open?

1 vote
0 answers
5 views

Consistency of a hypothesis test

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0 answers
5 views

How to calculate intersection points of diameters with an inner circle?

0 votes
0 answers
4 views

Invariant Solutions of PDEs-Linear fokker-planck equation with an odd drift

0 votes
0 answers
2 views

Proving the existence and uniqueness of multiplicative inverses in $\mathbb{C}$( LADR 4th edition (#5-1A))

-2 votes
1 answer
29 views

what is the smallest number whose square is between 15 and 30

0 votes
0 answers
6 views

Incrementing Indices of Variables through some kind of Operator

0 votes
1 answer
2k views

Weighted Averages with 2 Different % Variables

0 votes
0 answers
27 views

Simplifying a reciprocal of a product of two quadratics using modular arithmetic

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0 answers
5 views

Dynamical problem regarding radial and cross-radial acceleration

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0 answers
9 views

when can we say a metric space is quasi-invariant under a mapping?

0 votes
0 answers
14 views

Arc Length vs. Chord Length puzzle

0 votes
0 answers
13 views

Fourier transform of real exponential

6 votes
1 answer
78 views

Why does "The Twelve Days of Christmas" have space complexity O(sqrt(n/log n))?

5 votes
1 answer
64 views

Possible indices of finite index subgroups of $SL_2(\mathbb{Z})$

3 votes
0 answers
22 views

Homology and Brouwer degree theory over: the quotient space obtained of the suspension of $S^1 \vee S^1$ identifying its endpoints.

0 votes
0 answers
7 views

Čech cohomolog of a good cover of the real projective plane

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0 answers
7 views

Average Rank versus Ranked Average in Parameter Estimation

0 votes
0 answers
17 views

Is there an example where U combinator is less powerful than Y combinator

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0 answers
13 views

Partial Derivative of a Scalar Function

0 votes
1 answer
34 views

Computing the posterior distribution in a Bayesian analysis of a normal linear regression model

0 votes
0 answers
15 views

Is every strict ordering by inclusion a well-ordering?

0 votes
0 answers
20 views

Continuity of radii of balls function

0 votes
2 answers
30 views

Significance of Convergence Theorems in Analysis

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0 answers
12 views

Why are filters ordered in reverse to inclusion?

0 votes
1 answer
18 views

Bump function with integral $1$ and value $1$ at zero

1 vote
1 answer
3k views

Definitions of "non-degenerative closed bounded intervals"

4 votes
0 answers
31 views

Does iterating this function with primes as fixed points always result in a prime?

3 votes
1 answer
31 views

Proof verification: A cube and a tetrahedron are not scissors congruent?

3 votes
2 answers
31 views

Is there a maximum number of disjoint balls of fixed radius I can fit into a compact metric space?

1 vote
0 answers
14 views

Determining the significance of a curve's factors

0 votes
0 answers
9 views

Solution of recurrence relation with summation

0 votes
2 answers
27 views

How do you determine the critical region/decision rule in hypothesis testing?

4 votes
1 answer
369 views

Derivation of the Fourier Sine Transform of a Rational Function

0 votes
0 answers
9 views

Will the domains of both these functions be equal?

0 votes
0 answers
9 views

How to map identity to a sigmoid?

1 vote
1 answer
28 views

Solving ODE system with less equations

2 votes
0 answers
45 views

When are universal monomorphisms effective?

0 votes
0 answers
37 views

Where am I going wrong here? is this a paradox? or are my assumptions bad?

1 vote
0 answers
20 views

How to formally describe the illustrated area?

0 votes
1 answer
22 views

Locus of a point whose distance from two points is fixed (but not necessarily equal) in 3D geometry

0 votes
0 answers
43 views

Trying to solve a complex number question

-1 votes
1 answer
16 views

Intersection of a set with a von Neumann algebra

5 votes
0 answers
89 views
+50

Conjectures involving $\Lambda(n)$

0 votes
0 answers
14 views

Is ${}_3 F_2(a,b,c;d,e;x)$ irrational for $ a,c,d,e,x \in \mathbb{Q} / \{0 \} $

5 votes
3 answers
1k views

Lebesgue's monotone convergence theorem for upper integrals

0 votes
0 answers
19 views

Geodesics on a Riemannian surface

1 vote
0 answers
82 views

Closed form for the partial sums of the Harmonic Series?

1 vote
0 answers
26 views

Mass conservation for a transport equation in mild form

1 vote
1 answer
33 views

Confusion on Notations of Partial Derivatives on Manifolds

2 votes
1 answer
50 views

Finishing the proof of the triangle inequality of Hausdorff metric

1 vote
1 answer
35 views

Minimizing $\|Ax-b\|$ given that x can only take values 0 or 1

2 votes
0 answers
39 views

How to sketch the series $S(x)=\sum_{n=2}^{\infty}\frac{\sin nx}{\ln n}$ near zero?

0 votes
1 answer
18 views

Relative divisibility of derived subgroup of free group

3 votes
1 answer
62 views

Diving $m$ pizzas among $n$ students

2 votes
1 answer
60 views

Given is the system of differential equations

2 votes
1 answer
36 views

Clarify on Propositions 3.36 and 3.38 in Qing Liu's algebraic geometry book

3 votes
0 answers
59 views

One question about exponential martingale inequality at a paper of Ann. of Math.

1 vote
0 answers
13 views

Inclusion of field extensions $\mathbb{Q}(\omega_p)$ and $\mathbb{Q}(\omega_{2p})$

1 vote
0 answers
39 views

Showing $\int_{-1}^{1}\ln \left( \frac{x+1}{x-1} \right) \left( x - \sqrt{x^2 - 1} \right) \, dx=\frac{\pi^2 + 4}{2}$

0 votes
1 answer
27 views

Markov versus Martingale

-1 votes
0 answers
12 views

A reference for Lie groups as groups of transformations of a target space

0 votes
0 answers
32 views

How many fields $M$ are there with $\mathbb{Q} < M < L$ and $[M : \mathbb{Q}] = 4?$

1 vote
0 answers
27 views

If $f$ is discontinuous but continuous for each component,is there a continuous function $g$ that makes $f \circ g$ discontinuous for some component?

2 votes
0 answers
12 views

Ex. 8.21 in Einseidler & Ward FA book: where do we need that $G$ is abelian?

1 vote
0 answers
14 views

How exactly is Sherman-Morrison-Woodbury formula used in Kalman Filter

0 votes
0 answers
16 views

Power method convergence rate

1 vote
0 answers
10 views

Optimal Strategy for Card Betting Game

0 votes
0 answers
28 views

Natural way to extend the ring $\mathbb{Z} / p^k \mathbb{Z}$ so that the equation $x^2 + 1 \equiv 0 (\text{mod }p^k)$ has a solution

0 votes
0 answers
11 views

Convert $\partial_{\beta}\partial_{\gamma}(\epsilon_{\alpha\beta\nu}p_{\nu}p_{\beta})$ from index notation to vector notation

3 votes
0 answers
51 views

How to prove $\sum_{n=0}^\infty (-1)^n f_n=-\frac{1}{2i}\int_{c-i\infty}^{c+i\infty}\frac{f_z}{\sin(\pi z)}dz$ in the sense of Borel summation?

0 votes
0 answers
24 views
+50

Self-Organizing maps: why input vectors (x) are dependent on steps (t)?

0 votes
0 answers
13 views

Prove the transfer between roll. pitch, yaw to tilt, azimuth, swing

0 votes
0 answers
10 views

How to reformulate the BigM constraints into its equivalent Convex-hull formulation?

0 votes
0 answers
7 views

Is there an exact expression for the full width half maximum of a sech^2 curve convolved on itself?

0 votes
0 answers
8 views

Connected Metric Spaces: Strategies

1 vote
1 answer
16 views

Convex combination of equidistant curves

2 votes
2 answers
89 views
+100

'deducing' a bound using the first order taylor series. How to make it more precise?

0 votes
0 answers
24 views

Matrix multiplication expressed as convolutions?

1 vote
0 answers
21 views

Reciprocals of positive integers in arithmetic progression

7 votes
1 answer
201 views
+50

Is there a non-trivial arithmetic progression of positive integers such that every number contains the digit $2?$

1 vote
0 answers
28 views

Is there such a thing as the "Second Passage Time"?

3 votes
3 answers
18k views

What does the slash mean in this set notation?

0 votes
0 answers
10 views

Reformulate an algorithm as a sequence of standard matrix operations

-1 votes
0 answers
50 views

Simplifying $\frac {4x^2 + 6x +2xy + 3y} {4x^2 -9y^2}$

0 votes
0 answers
29 views

A special identity relating poisson integral for L^2 boundary condition

1 vote
0 answers
69 views

Is $\sqrt{1+\sin2x} =\sin2x$?

0 votes
0 answers
10 views

References on the Sturm–Liouville problem from a functional analysis point of view

13 votes
1 answer
163 views

Let $F_\infty=\bigcup_{n\geq1}\operatorname{Q}(2^{1/2^n})$ , $K_\infty=\bigcup_{n\geq1}\operatorname{Q}(\zeta_{2^n})$, what is the intersection?

-2 votes
0 answers
15 views

For $\overline{\{\xi \}} = X'\subseteq X$ with $\xi \in S \subseteq X$, $\{\xi\}$ is dense in $S \cap X'$?

1 vote
1 answer
34 views

The "Euler Product formula" for general multiplicative functions

0 votes
1 answer
54 views

Proving an inequality given a constraint

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