Top network posts

• 222 'Obvious' theorems that are actually false
• 102 Reasoning that $ \sin2x=2 \sin x \cos x$
• 83 What is the oldest open problem in geometry?
• 78 How to prove $\int_{-\infty}^{+\infty} f(x)dx = \int_{-\infty}^{+\infty} f\left(x - \frac{1}{x}\right)dx?$
• 68 How can one prove that $e<\pi$?
• 67 Closed form for $\int_0^1\log\log\left(\frac{1}{x}+\sqrt{\frac{1}{x^2}-1}\right)\mathrm dx$
• 64 An integral involving Airy functions $\int_0^\infty\frac{x^p}{\operatorname{Ai}^2 x + \operatorname{Bi}^2 x}\mathrm dx$
• View more network posts →