Top network posts

• 181 Is it true that $0.999999999\ldots=1$?
• 159 Why $\sqrt{-1 \cdot {-1}} \neq \sqrt{-1}^2$?
• 153 How to prove Euler's formula: $e^{i\varphi}=\cos(\varphi) +i\sin(\varphi)$?
• 135 Is there a general formula for solving 4th degree equations (quartic)?
• 102 Convert HTML entities to Unicode and vice versa
• 84 Proof that the irrational numbers are uncountable
• 70 Proving that 1- and 2-d simple symmetric random walks return to the origin with probability 1
• View more network posts →