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0 answers
3 views

A reference for the chromatic number of graphs when introducing twins

1 vote
0 answers
15 views

Stuck on homework: Find the general solution of the differential equation $y'' - 7y' = t^2$

0 votes
2 answers
47 views

Sigmoid vs heaviside step function

0 votes
0 answers
23 views

How to take the integral of (dx/dt)^2

0 votes
1 answer
15 views

Equational theory in the language of rings with no known equational proof

1 vote
2 answers
53 views

sum $\sum (2^{a_1-1}-1)...(2^{a_k-1}-1)$

0 votes
1 answer
55 views

LOTUS and Adam's Law Nomenclature

0 votes
2 answers
25 views

$\frac{1}{8}x^2+\frac{23}{9}y^2=z^2$ has non-trivial solutions in $\mathbb{Q}$

6 votes
2 answers
83 views

How to prove the following integral inequality problem

0 votes
1 answer
22 views

3.5.11)Find the limit and give the strict "'$\epsilon - \delta$"' proof that the result is correct: Let $\lim_{x\to 1^{+}}$ $x\lfloor x \rfloor$

0 votes
0 answers
11 views

How do I solve the following Volterra, non-homogeneous, 1st kind Integral Equation:

2 votes
2 answers
57 views

Writing a counting process $N(t)$ as $N(t) = \sum_{k=1}^{n(t)} Y_k$ : Existence and properties of $Y_k$?

0 votes
1 answer
45 views

Euler's Elements of Algebra Solution Method, Section III Ch. XI Problem 3.

1 vote
0 answers
37 views

Is my proof valid for Exercise 7.3 of book "Introduction to Lie Algebras" by Karin Erdmann and Mark J. Wildon

0 votes
1 answer
1k views

Lipschitz constant of continuous and piecewise linear functions

2 votes
2 answers
57 views

How can I estimate the following integral: $\int _{0}^{\frac{1}{\sqrt[]{ x }}} (1-e^{-t}) ^{a-1} e^{-xt} \ dt = x^{-a} \Gamma(a) +O(x^{-a-1})$

4 votes
1 answer
90 views
+50

Tamely ramified extensions of $K_{\mathfrak p}^{\mathrm{unr}}$

1 vote
0 answers
28 views

Pinter set theory exercise 2.5.10

2 votes
3 answers
81 views

Determine if $\mathbb Q (\root4 \of 5i,\sqrt3)$ is a normal extension of $\mathbb Q$.

0 votes
1 answer
32 views

When is $x \in \mathbb{Q}_p$ a square?

0 votes
0 answers
46 views
+50

Mollification and limit

0 votes
0 answers
9 views

Approach In Learning Contour Integration Properly

0 votes
0 answers
8 views

How to extend the slice map $S_f: A\otimes B \to A$ given $f \in B^*$ to the multiplier algebras?

0 votes
0 answers
16 views

An algorithm for finding the continuous addedens of a number in a sequence (...or, fitting a box in a set of other boxes--evenly)

4 votes
2 answers
353 views

Inertia coprime to degree implies Inertia cyclic?

-3 votes
2 answers
79 views

prove the following inequality using AM-GM

0 votes
0 answers
85 views

Expressing a function in terms of the nontrivial zeros of the Riemann zeta function

0 votes
0 answers
18 views

Proof about adjoint matrix

0 votes
1 answer
39 views

If $\frac{p}{p+q}$ is a negative real number, what can I deduce about complex $p$ and $q$?

0 votes
1 answer
27 views

A proof for the statement: The 3-Dimensional matching problem is NP-Complete

-2 votes
1 answer
43 views

Could you advise me on how to study pure mathematics in a self-taught way?

5 votes
4 answers
500 views

Bounds for $\sum_{i=1}^n i^{\ln(i)}$

0 votes
3 answers
2k views

How to correctly find the angle phi in de moivre's formula?

2 votes
1 answer
406 views

Birthday problem with an arbitrary "year" and number of overlapping birthdays

0 votes
0 answers
30 views

Graph with $n$ edges from each vertex, color in $n+1$ colors

0 votes
1 answer
18 views

How to extend the $p \Rightarrow q$ constraint with logical AND within the $p$ statement for Big-M method?

0 votes
0 answers
5 views

What is the maximum area of n non-overlapping equal area triangles inscribed in a circle of radius

0 votes
1 answer
61 views

Showing $\sum_{y \in Y} f(x_0, y) = \sum_{(x,y) \in \{x_0\} \times Y} f(x, y)$.

0 votes
1 answer
50 views

Confusion on the definition of subbasis

0 votes
1 answer
36 views

Is $\Diamond \Box p$ "implies" $\Box \Diamond p$ a theorem in any modal logic?

1 vote
0 answers
17 views

Question about Chern-Simons forms

10 votes
3 answers
427 views
+500

Is the smallest root of a polynomial always complex if the coefficients is the sequence of prime numbers?

0 votes
1 answer
22 views

It there a better upper bound for $\max_{1\leq i \leq n}(a_{i}*b_{i})$?

-3 votes
0 answers
21 views

Can you suggest references for solving integrals in the complex plane that involve Bessel functions?

0 votes
0 answers
38 views

Infinite sequence of exponents riddle

0 votes
0 answers
11 views

Covering of the torus with certain chatacteristic subgroup

0 votes
1 answer
2k views

How to find trajectory x displacement when it reaches a given height

1 vote
1 answer
25 views

Regarding the number of variables in Symmetric Functions

0 votes
1 answer
16 views

Question regarding making the subsets of a set G a G-set by left translation

0 votes
0 answers
33 views

Serre duality for arbitrary sheaves?

2 votes
0 answers
29 views

Computing $[\mathbb{C}(x,y):\mathbb{C}(xy^n+x^ny,xy)]$ and similar extensions

1 vote
1 answer
16 views

Number of non-equivalent irreducible representations of a finite group $G$ over an arbitrary field $F$/non-isomorphic simple $F[G]$-modules

1 vote
1 answer
70 views

Square matrices whose squares and pairwise products are zero

0 votes
0 answers
46 views

Question about covering space of punctured unit disk

0 votes
0 answers
18 views

How does a first order theory keep track of its axiom schemas?

0 votes
1 answer
1k views

Probability of an Event Occurring Over X Years Given Individual Annual Probabilities of the Event Occurring

0 votes
1 answer
34 views

Every point inside a convex polyhedron can be expressed as a convex combination of the vertices.

4 votes
2 answers
98 views

pow and its relative error

0 votes
0 answers
36 views

Choice of a scaling factor to flip an inequality

0 votes
0 answers
18 views

Nonhomogeneus PDE function requires expansion in sines?

1 vote
0 answers
27 views

Jacobian of Isometry between regular surfaces

0 votes
0 answers
19 views

T - Separating the space of continuous functions that are zero at infinity on a product topological space.

3 votes
1 answer
1k views

kernel matrix with trivial solution only

-1 votes
1 answer
140 views

Exhaustion by compact sets $\implies$ exhaustion-function?

2 votes
3 answers
81 views

Proving that the set of limit points of a set is closed directly

1 vote
0 answers
17 views

Sufficient conditions to guarantee that weakly convergent sequence also converges strongly

0 votes
0 answers
20 views

Linear approximation of the magnetic dipole field

1 vote
1 answer
12 views

Definiton of wild ramification group and isomorphism $\Delta \cong \prod_{s \neq \ell} \mathbb{Z}_s(1)$

0 votes
0 answers
12 views

hermitian metric on jet bundle

1 vote
1 answer
38 views

Variance of normalized random vector

0 votes
0 answers
44 views

For quasi-coherent sheaves $\mathcal{F}, \mathcal{G}$ on a proper scheme, $\operatorname{Ext}^2(\mathcal{F},\mathcal{G}) = 0$

0 votes
0 answers
19 views

Derivation of equation from Euler's equation for a fluid

3 votes
0 answers
73 views

How many squares can be constructed from n lines of the same length?

0 votes
0 answers
22 views

Is the Riemannian metric tensor of a symmetric positive definite matrix also symmetric?

-1 votes
0 answers
27 views

Counterexample 3.14 of Robbin and Salamon at the paper "The spectral flow and maslov index"

0 votes
0 answers
15 views

Comparability Riemannian Metric in chart

1 vote
1 answer
23 views

Showing that $\bigcap A$ is the least element for the set $A$ where $A$ is a set of ordinals.

0 votes
2 answers
42 views

Proof of Union bound identity in Probability.

3 votes
1 answer
80 views

Efficient algorithm to solve a sparse recovery problem

1 vote
0 answers
37 views

Is this the correct value for integrating this differential form over a sphere?

0 votes
0 answers
18 views

Conditioning a probability distribution on a certain event

0 votes
0 answers
13 views

Russian roulette with re-spin intuition for asymmetric solution

3 votes
4 answers
2k views

Number of Partitions of $n$ No Part Appears Exactly Once Equals to $n$ Partitioned into 0,2 ,3 or 4 (Mod 6 )

4 votes
0 answers
57 views

Does the Sequence formed by Intersecting Angle Bisector in a Pentagon converges?

6 votes
0 answers
90 views

Is the new series for 𝜋 a Big (or even Medium) Deal?

0 votes
0 answers
10 views

High order finite difference schemes for boundary value problems on a finite interval

1 vote
0 answers
23 views

How can I solve the SDE $d X_t = -\sqrt{a X_t} dB_t$

0 votes
0 answers
17 views

Stereographic Projection Using a One-Sheeted Hyperboloid

4 votes
1 answer
48 views

Formula for a matrix's characteristic polynomial as the exponential of a series in $\mathrm{tr}(A^k)$

1 vote
0 answers
18 views

Connection between sum of uniform (0,1) random variables and Poisson arrival times

2 votes
2 answers
106 views

Proving for n+1 and n-1 at the same time using induction.

4 votes
2 answers
855 views

Is it problematic to define the line integral in terms of infinitesimals

1 vote
0 answers
39 views

A question about Jordan Curve Theorem

17 votes
0 answers
1k views

Placing triangles around a central triangle: Optimal Strategy?

6 votes
0 answers
2k views

The meaning of "in general" or "generally" in mathematics

-1 votes
2 answers
60 views

If we spin an ostrich egg along its minor axis will it be oblate shape?

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