What do you get when you photocopy a mirror - and *why* ??

The Fore Aft Tide - explaining and exploring tidal forces

Wrapping Up Wrapping Up The Earth

The Sideways Tide

Finding Perrin Pseudo Primes: Part 1

The Birthday Paradox – On Jupiter, and Beyond!

Investigating Hash Collisions through the Birthday Paradox

The Sideways Tide

The Other Wrapping The Earth Problem

Wrapping The Earth

The Other Wrapping the Earth Problem

Unexpected Interaction of Features

The Ring of Steel

Wrapping the Earth

Binary Search Reconsidered

Measuring the size of the Earth by watching a shadow on a wall

Software Checklist

The Mutilated Chessboard Revisited

When optimising code, never guess, always measure

Idle Thoughts About Pollard Rho

Just Teach My Child the Maths

Revisiting the Mutilated Chessboard

Sieve of Eratosthenes in Python (2015)

Left Truncatable Prime

Bash Initialisation Files – which one will get executed?

The Independence Game

Thinking About Recursion

Spikey Spheres

Spikey Spheres

To approximate 52! by hand, compute 54! and divide by 3000.

More →