Geometric shapes in ancient rock art paintings

19 April 2016

rock art
Ancient rock art may give clues to the origin of written symbols, including early math notation.

Read the rest of this entry »

New 3D interactive graph

13 April 2016

3D interactive graph applet - background
I recently added a 3D interactive graph which you can use to explore the x-, y- and z-axis system.

Read the rest of this entry »

Roller Door Problem and Polymath Software

3 April 2016

polymath roller door problem
Here's a numerical solution to an earlier problem we discussed involving a roller door.

Read the rest of this entry »

How to find the equation of a quintic polynomial from its graph

26 March 2016

Given a quintic curve, how to find the function?
A quintic curve is a polynomial of degree 5. Given such a curve, how do you work backwards to find the original function expression?

Read the rest of this entry »

Squaring the circle - a reader’s approach

12 February 2016

Squaring the circle
Here's a reader's approach to the age old problem of finding a square with the same area as a given circle, called "squaring the circle"

Read the rest of this entry »

Math movie: How to play a Rubik’s Cube like a piano

9 December 2015

How to play a Rubik’s Cube like a piano - Michael Staff
This movie explores the connections between Rubik's cube and the group theory concepts behind music.

Read the rest of this entry »

Butterfly map of the world

8 December 2015

Butterfly map of the world
The butterfly map of the world is based on Reuleaux triangles. This article explores some of the story behind this interesting map.

Read the rest of this entry »

Reuleaux triangles

8 December 2015

Reuleaux triangles
Reuleaux triangles have a property similar to circles - they have constant diameter when rotated.

Read the rest of this entry »

Is a 1×1 matrix a scalar?

26 November 2015

Is a 1x1 matrix really a scalar?
A 1×1 matrix is often regarded as a scalar quantity, but is that correct? This article explores a reader's question.

Read the rest of this entry »

Wallis, pi and quantum theory

24 November 2015

Wallis Product - new proof by quantum mechanics
A quite remarkable new proof of the 400 year-old Wallis Product approximation for π has recently been published. It arises from a study of the quantum mechanics of a hydrogen atom.

Read the rest of this entry »

/blog/index.php