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New posts in alternative-proof
Visual proof of $\sum_{n=1}^\infty \frac{1}{n^4} = \frac{\pi^4}{90}$?
sequences-and-series
alternative-proof
visualization
proof-without-words
Theorem 18.1 of Munkres’ Topology
general-topology
continuity
proof-writing
alternative-proof
If $a_n>0;\ a_n\to 0,$ is there an enumeration $\{ x_n \}_{n\in\mathbb{N}}$ of $\mathbb{Q}\cap (0,1]$ such that $a_1 x_1 > a_2 x_2 > a_3 x_3\ldots\ ?$
real-analysis
general-topology
proof-writing
problem-solving
alternative-proof
What is the most unusual proof you know that $\sqrt{2}$ is irrational?
big-list
irrational-numbers
alternative-proof
rationality-testing
$n!$ is never a perfect square if $n\geq2$. Is there a proof of this that doesn't use Chebyshev's theorem?
number-theory
prime-numbers
factorial
alternative-proof
Methods to compute $\sum_{k=1}^nk^p$ without Faulhaber's formula
summation
recreational-mathematics
alternative-proof
big-list
Proofs of AM-GM inequality
real-analysis
inequality
alternative-proof
means
a.m.-g.m.-inequality
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