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Top Questions
12
votes
Continued fraction in 8th root---— any simpler approach?
contest-math
fractions
continued-fractions
asked Jun 30 '17 at 5:43
math.stackexchange.com
8
votes
Balls and vase $-$ A paradox?
infinity
philosophy
paradoxes
asked May 23 '17 at 8:20
math.stackexchange.com
7
votes
How to prove or falsify this inequality?
calculus
integration
derivatives
inequality
integral-inequality
asked May 22 '17 at 7:11
math.stackexchange.com
5
votes
What is the intuition behind Hua’s proof of the Cartan-Brauer-Hua theorem?
abstract-algebra
ring-theory
intuition
division-ring
asked Aug 25 '19 at 3:07
math.stackexchange.com
Top Answers
16
Let $T$ be any subset of $\{1,2,3,…,100\}$ with $69$ elements. Prove that one can find four distinct integers such that $a+b+c=d$.
math.stackexchange.com
8
Prove that every permutation is the product of disjoint cycles
math.stackexchange.com
7
How do you prove the following formula $\binom{n+i-1}{n} = \sum\limits_{k=0}^{n}\binom{i-1}{k} \binom{n}{k}\ $?
math.stackexchange.com
7
The Minkowski sum of two convex sets is convex
math.stackexchange.com
6
Combinatorial proof of the identity
math.stackexchange.com
6
Evaluate: $\lim_{\theta \to \frac {\pi}{4}} \dfrac {\cos \theta - \sin \theta}{\theta - \frac {\pi}{4}}$
math.stackexchange.com
5
Confirm that the identity $1+z+…+z^n=(1-z^{n+1})/(1-z)$ holds for every non-negaive integer $n$ and every complex number $z$, save for $z=1$
math.stackexchange.com
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