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Andreas

Member for 8 years, 6 months
Last seen this week

Germany

Summary

Reputation

15,938

15.9k
13.7k
11.5k

2021
2022
2023
2024

Top tag

inequality

Next privilege

20,000 Rep.

Access 'trusted user' tools

Badges

26

58

Newest

Caucus

Next badge

47/100

Socratic

Impact

~293k

people reached

6

helpful flags

425

votes cast

Answers

View all 524 answers

37

What is this curve?

Sep 9, 2018

23

Is there an analytic expression for a number of elements inside a triangular matrix (with and without items on diagonal)

Aug 10, 2017

15

Stronger than Nesbitt inequality

Jun 19, 2016

14

Natural logarithms of numbers to a base

May 31, 2018

14

How can I intuitively understand complex exponents?

Nov 3, 2017

Questions

View all 55 questions

34

(Dis)Prove $\sum_{i=1}^n\sum_{j=1}^n{(|x_{i}-x_{j}|-|y_{i}-y_{j}|)^2}\geq 4$

May 4, 2019

15

Volume of $n$-dimensional spherical orthant in upper diagonal halfspace

Feb 25, 2016

14

Show $\tan(n) < n^q$, conjectured $q < 1.1$

Jan 6, 2020

12

Bound on matrix product $\begin{bmatrix} 1+\frac{1}{n} & -1 \\ 1 & 0 \end{bmatrix}\cdots\begin{bmatrix} 1+\frac{1}{2} & -1 \\ 1 & 0 \end{bmatrix}$

Apr 5, 2020

10

Inequality $\frac{a^3+b^3+c^3}{3}\geq\sqrt{\frac{a^4+b^4+c^4}{3}}$

Mar 19, 2018

Tags

View all 236 tags

inequality

326

Score

216

posts

calculus

125

Score

70

posts

algebra-precalculus

116

Score

85

posts

sequences-and-series

86

Score

44

posts

integration

75

Score

26

posts

Reputation

-2

Prove that $\frac {x_1^3}{y_1}+\frac {x_2^3}{y_2}+\ldots+\frac {x_n^3}{y_n}\leq \frac {a^4+b^4}{ab (a^2+b^2)}(x_1^2+x_2^2+\ldots+x_n^2) $

+8

How to evaluate Integral : $\int^{\infty}_{0} \frac{\text{arccot}(x)}{1-x}dx$

+8

Proving $ \sum_{n=-\infty}^{\infty}(-1)^n e^{-\left(x - \frac{n}{2}\right)^2} = K\cos(2\pi x)$

+10

Integral of exponential quadratic and linear

Badges

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26

silver badges

Pundit

Nov 30, 2022
Inquisitive

Apr 6, 2020
Civic Duty

Dec 8, 2020

58

bronze badges

inequality

May 8, 2019
algebra-precalculus

Dec 1, 2022
calculus

Apr 22, 2020

Accounts

15.9k
26
58

101
2

Meta Stack Exchange

101

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Votes cast

352

upvotes

73

downvotes

225

question votes

200

answer votes

3

this month