Skip to main content

Maths Society Student Speaker - Louis: Fractals

This week, Louis gave a fascinating talk to the Maths Society all about fractals; those strange, endlessly repeating patterns that you find in nature. Whether you’re zooming into a fern, a snowflake, or a Sierpiński triangle, the same shapes keep appearing.

Louis explained that fractals were originally developed to help describe rough, irregular shapes in nature – things that traditional geometry couldn’t handle. He introduced us to the Hausdorff dimension, a tool used to measure the 'size' of irregular shapes. Unlike traditional dimensions, it exists on a continuous scale. If you apply the Hausdorff measure to a shape for all dimensions lower than its true Hausdorff dimension, the result becomes infinite, a sign of its complexity. He demonstrated this using the triangle fractal.

We also looked at the box-counting dimension, a more practical method for measuring how a shape scales as you zoom in. This helped us apply ideas to the Sierpiński triangle and understand how a formula like rd=nr^d = nrd=n relates to self-similar structures.


Popular posts from this blog

The 16+ Mathematics Entry Exam for St Paul’s School

The mathematics entrance exam at 16+ is taken in November for entry to study A Levels in the following September. The content of the exam is the Edexcel IGCSE syllabus but does not include the topics of arithmetic series and differentiation.  The emphasis is on number and algebra skills. The test for entry in September 2026 onwards will be non-calculator. When you apply to St Paul’s, we need to know whether you intend to take single mathematics A Level or further mathematics A Level. Pupils who do well on the entrance papers across all their chosen subjects are invited for interview. Interviews are taken by subject specialists at St Paul’s School and last 20-30 mins. The aims of the interview are to: gauge your ability to apply the GCSE mathematics skills in unfamiliar questions. to understand your reasons for choosing the subject. to investigate the additional problem-solving skills you have developed through classes and your independent studies. We realise that not ...
Read more

BMO1 Results 2025

It was another successful year for the students who qualified for the British Mathematical Olympiad Round 1 (BMO1). Of the 85 students who took part, 35 received merits, 25 received distinctions, and 7 students qualified for BMO2. Having 7 students qualify for BMO2 is a fantastic achievement, especially given that only around 100–120 students nationwide reach this stage each year. This is also the highest number of merits and distinctions the school has ever attained in BMO1. Well done to all the students who took part — your hard work is truly paying off! Here is a selection of questions from the six problems on the BMO1 2025 paper, courtesy of UKMT. The full paper and mark scheme are available here :
Read more