what are special numbers??

Some geometry behind the Basel problem

Integrating the impossible

trigonometry like you've never seen it

these numbers are "best friends"

"tuning" a recursive sequence

e^pi vs pi^e using physics!?!

an absurd approach to a simple mathematics problem

Generalizing a test from high-school.

an awesome approach to otherwise mundane limits

1886 Cambridge University Exam Integral

using the "limit definition" of the integral

when a quadratic equation has an infinite root.

a geometric approach to a famous integral

a super nice integral

Perfect numbers and Mersenne primes

what a difficult limit!!

I can solve any quintic equation!!

a bit about one of Ramanujan's favorite functions

what's the limit of this integral?

a very tricky simple problem

the most creative definition of sine and cosine

Mobius' favorite function

Have you ever seen this definition of Euler's constant??

The most creative digit sum problem I have ever seen!!

Dini's magical integral

the unluckiest divisibility rules

the most viral "false" equation

the Fibonacci sequence is a trig function??

my new favorite proof of this classic result