Excavator - Badge - Mathematics Stack Exchange

Excavator

Edit first post that was inactive for 6 months.

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Proof for weak (1,1)-estimate for Hilbert Transform

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masaez

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Meaning of "horizontal k-form"

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Greyson Wesley

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Laplace Method - Estimation of an integral

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Aguazz

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Splitting field of $x^3-10x+10$ over $\mathbb{Q}(\sqrt{13})$

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Abdulhafeez Ayinde Abdulsalam

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An inequality with a constraint

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SwitchArio

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Prove the sequence is monotone decreasing and find the limit?

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Aditya Teraiya

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If a ring element is right-invertible, but not left-invertible, then it has infinitely many right-inverses.

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Mayukh Vellala

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Are Zero Degree polynomials Considered monics?

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Nik Bren

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Determine whether the given map ϕ is an isomorphism of the first binary structure with the second.

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Luciano

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Sum of normally distributed random variables is normal

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51c6

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Derivative of Fourier transform: $F[f]'=F[-ixf(x)]$

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nloctqurne

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A combinatorics problem from the USAMO 1982

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user1361816

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Abelian-by-(finite abelian) [closed]

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Looool 2015

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Approximation of $\int_0^{\infty} e^{-bx^2}\sin(ax^2)dx$ when $a\gg b$

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Yimin

3,56220 silver badges34 bronze badges

What is a simple way of understanding associated bundles?

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Noah M

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Are there any interesting semigroups that aren't monoids?

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Veky

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What is the probability ??

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Wallace C.

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Let R be a ring such that $a^2 = a$ , $\forall a$ $\in R$ . Prove that R is commutative.

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Winston Cheong

33 bronze badges

Question on sheafification of a presheaf

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Y.X.

4,4092 gold badges24 silver badges60 bronze badges

Connecting Points in a Region $\Omega \subset \mathbb{C}$ by a Piecewise Smooth Curve

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Nathan Reading

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Continuous functions on $[0,1]$ is dense in $L^p[0,1]$ for $1\leq p< \infty$

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Bastam Tajik

1118 bronze badges

set of orthogonal quasiperiodic functions

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Severin Schraven

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Which is correct Euler path or Euler trail?

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Singularity_ud1069

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Continuous, injective curve that is not an embedding (Descartes folium)

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Davide Masi

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Must a Geodesic Metric Space be a Length Space?

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Tim

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Bayes Theorem Probability Question: cancer or not

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user985366

5773 silver badges13 bronze badges

What do we mean by rate in the exponential distribution?

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Antoine Poinsot

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A function is real iff the coefficients of complex fourier series $c_{-n}=\overline{c_n}$

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DJ fade

132 bronze badges

Minkowski's Lattice Point Theorem on Linear Forms

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David Goldberg

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Can a polyhedron, made solely of regular pentagons and regular hexagons, be made with an arbitrarily large number of hexagons?

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Ryan C

1057 bronze badges

Given area of quadrilateral find missing coordinates

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ShadowKnight700

695 bronze badges

Understanding the definition of Cauchy sequence

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Ak3.14

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How to solve integration with Dirac Delta function?

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hasanghaforian

6496 silver badges20 bronze badges

Geometry Two-Column Proof Question

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Maxime Jaccon

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Archimedes problem about the broken chord

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Bryan

619 bronze badges

Rules for Calculating Modulo

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Daniel S.

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Upper bound on covering multiplicity

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Alexey Schwarzmann

33 bronze badges

Diffeomorphic Level sets Of Manifolds

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DodoDuQuercy

1,7826 silver badges9 bronze badges

Mapping from a unit square to a unit circle (and more generally to an ellipse)

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ivanjermakov

1033 bronze badges

Inverse Hausdorff Young

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xxxg

3991 silver badge11 bronze badges

Prove that if $ab \equiv 0 \pmod p$, where p is a prime number, then $a \equiv 0 \pmod p$ or $b \equiv 0 \pmod p$

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rosshjb

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Calculate the minimum number of moves required to solve "The Tower of Hanoi" with $4$ pegs and $4$ discs.

Awarded Dec 20, 2024 at 5:14

3red2green

886 bronze badges

Multivariate Taylor Expansion

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Eleanor Blake

887 bronze badges

Span of a closed subset

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Ning

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onto homomorphic mapping from $Z_4 $ to $Z_2 \times Z_2$

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Brick

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Relationship between Galois cohomology and etale cohomology.

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username

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Digits of a number in arithmetic progression

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Sunil Choudhary

13 bronze badges

Adjoint Norms in Banach Space

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Tuh

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Let $f: I \to \mathbb{R}$ be a continuous monotonic and bounded function on an interval $I$, then $f$ is uniformly continuous

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00100000

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Shortest proof for 'hairy ball' theorem

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Uschi

32 bronze badges

is slope of line of best fit through points the same as y intercept of regression through their derivatives

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Jonathan Wheeler

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Motivation behind the definition of measurable functions.

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mathbreaker

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Show that $2\Bbb Z$ and $3\Bbb Z$ are not isomorphic - question on proof

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Mustafa

718 bronze badges

Finishing the solution to this functional equation: $ f\left(x^2+y\right)=f\bigl(f(x)-y\bigr) + 4f(x)y $

Awarded Dec 12, 2024 at 4:35

Anonymous

32 bronze badges

Show that a limit set is connected? [closed]

Awarded Dec 12, 2024 at 4:35

Hoejin Kim

33 bronze badges

If $f$ is uniformly continuous and integrable, then $\lim_{x\to \infty }f(x)=0$.

Awarded Dec 11, 2024 at 4:28

Curious DeGiorgio

135 bronze badges

Find $\sum_{k=0}^6 \cot \left({\pi\over 21} + {k\pi\over 7}\right)$

Awarded Dec 11, 2024 at 4:28

Abd-Elouahab Moustapha

3,5263 silver badges23 bronze badges

(this question is from linear algebra done right 2.C question 9?

Awarded Dec 11, 2024 at 4:28

Tony Häger

1439 bronze badges

Fundamental group of the complement of $k$ points in $\mathbb{R}^2$

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Ben123

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Projective modules and ring homomorphisms.

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Conjecture

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