New posts in Faq

Explain why $E(X) = \int_0^\infty (1-F_X (t)) \, dt$ for every nonnegative random variable $X$

Finite Sum of Power?

Highest power of a prime $p$ dividing $N!$

Units and Nilpotents

$\sqrt{c+\sqrt{c+\sqrt{c+\cdots}}}$, or the limit of the sequence $x_{n+1} = \sqrt{c+x_n}$

Continuous mapping on a compact metric space is uniformly continuous

How do I compute $a^b\,\bmod c$ by hand?

Proving $1^3+ 2^3 + \cdots + n^3 = \left(\frac{n(n+1)}{2}\right)^2$ using induction

How can I prove that all rational numbers are either terminating decimal or repeating decimal numerals?

Is $x^x=y$ solvable for $x$?