MathAdam

How imaginary numbers help us solve cubic equations

An ingenious use of spheres sheds light on this conic section

And where’s my £10K?

Tom Apostol’s square root of 2 proof is beautiful

A visual approach

How many lights remain on?

Messing with middle-school math.

How many can you come up with?

Euler’s constant, e, defines itself into existence

Try it first

Hint: It’s an integer!

Think outside the box. (Sorry.)

Integral calculus makes it easy

Why is it the same as the curved strip which surrounds it?

Show that n⁷ − n is divisible by 42 for every positive integer n.

Stop trying so hard

A Devilishly Delightful Distraction

Geometry 4 Fun

July Livestream Challenge

Try it first.

It’s not so difficult.

Or: Doing Math On Minimal Sleep

How long would she take to get to the other side?