Fundamental Theorem of Arithmetic

Simon’s attempt to come up with his own proof

Simon working on his proof of the Fundamental Theorem of Arithmetic (he got stuck and then searched for existing proofs online).

The proof that he put together with the help of some resources online

Topological trick in slow motion

Simon (and Neva as his assistant) experimenting with the topology of a paper strip, filming their (almost magical) tricks on a slow motion camera:

Inspired by Tadashi Tokieda’s geometry and topology tutorials on Numberphile.

Simon speaking at the Processing Community Day in Amsterdam

Simon had his first public performance in front of a large audience last Saturday (February 9, 2019): he spoke about his Times Tables Visualization project at the Processing Community Day in Amsterdam!

Simon writes: You can access the code of the poster and the animation (and the logo for my upcoming company!) and download the presentation in PowerPoint, on GitHub at

If you’d like to buy a printed copy of the poster, please contact me and I’ll send you one. Status: 3 LEFT.

One of the tweets about Simon’s presentation

Computers of the Future: How Far Do We Need to Go?

How many bits will computer operation memory have and how many do we need to have to link every single particle in the Universe to the internet? And how useful are quantum computers?

Processing Community Day Amsterdam has published its program and Simon is in it!

It’s official! Simon is going to be speaking at this event, his presentation (about his Times Tables Visualization project in Processing) is planned for the 15-o’clock block!  

Times Tables with Simon Tiger
Simon is a 9 year old mathematician who loves to reveal the mysterious beauty of math. In his short presentation he will share a recent project he made: visualising times tables from 1 to 200 in Processing. Simon first created an animated version and later turned it into a ginormous poster with 200 static representations of the times tables, both mathematically accurate and artistic. Simon will bring several copies of the poster! 

Check for more information and here’s a link to the animated version. 


The day is packed with other beautiful talkes and workshops!

DAY: Saturday 9 February 2019
TIME: 11.00 – 24.00
WHERE: FIBER Office | Open Coop 
Tolhuisweg 2, Amsterdam 
How to get there: Take the ferry from Amsterdam CS to the Buiksloterweg (Amsterdam North). Our location is a 5-minute walk. The ferry services continue all day and all night.

Fluid Dynamics: Laughing and Crying

Simon was watching Daniel Shiffman’s live coding lesson on Wednesday, and when fluid dynamics and Navier-Stokes equations came up (describing the motion of fluid in substances and used to model currents and flow), Simon remarked in the live chat that the Navier–Stokes equations are actually one of the seven most important unsolved math problems and one can get a million dollar prize for solving them, awarded by the Clay Mathematics Institute.

(I looked this up on Wikipedia and saw that it has not yet been proven whether solutions always exist in 3D and, if they do exist, whether they are “smooth” or infinitely differentiable at all points in the domain).

We had read an in-depth history of the Navier–Stokes equations in Ian Stewart’s book several weeks ago, but I must confess I didn’t remember much of what we’d read anymore. “Is it that chapter where Stewart describes how Fourier’s paper got rejected by the French Academy of Sciences because his proof wasn’t rigid enough?” I asked Simon. – “No, Mom, don’t you remember? That was Chapter 9 about Fourier Transform! And the Navier-Stokes equations was Chapter 10!” – “Oh, and the Fourier Transform was also the one where there was a lot about the violin string, right?” – “No!”, – Simon really laughs at me by now, – “That was in Chapter 8, about the Wave Function! You keep being one chapter behind in everything you say!” Simon honestly finds it hilarious how I can’t seem to retain the information about all of these equations after reading it once. I love his laugh, even when he’s laughing at me.

Today though, he was weeping inconsolably and there was nothing I could do. Daniel Shiffman had to cancel the live session about CFD, computer fluid dynamics. Simon had been waiting impatiently for this stream. My guess, because it’s his favourite teacher talking about something interesting from a purely mathematical view, a cocktail of all things he enjoys most. And because he never seems to be able to postpone the joy of learning. He had explained to me once that if he has this drive inside of him to conduct a certain experiment or watch a certain tutorial now, he simply can’t wait, because later he doesn’t seem to get the same kick out of it anymore.

I’m baking Simon’s favourite apple pie to pep him up. Here are a couple more screen shots of him taking part in the Wednesday lesson:

Getting ready for the Processing Community Day Amsterdam

Simon getting ready for his presentation at the Processing Community Day Amsterdam, printing additional copies of his ginormous Times Tables Visualization poster at the Antwerp Art Academy (made possible thanks to our wonderful friend, photographer Oxiea Villamonte). If you’re into creative coding and math, please come to the event (Simon will be speaking around 15 p.m.) There will be a limited number of Times Tables Visualization posters available for sale!

PCD Amsterdam

DAY: Saturday 9 February 2019

TIME: 10.00 – 19.00

WHERE: FIBER: Tolhuisweg 2, Amsterdam

Larger than Graham’s number!

Simon explains strong and weak tree sequences and reveals the greatest finite number used in mathematics: TREE(3), a lot larger than Graham’s number. The TREE sequence is a fast-growing function arising out of graph theory.

Simon comments: “What is you make TREE(TREE(3))?”

Inspired by:

Experimenting with a Camera Obscura

Simon tests how well different light waves travel through the minuscule hole of the camera obscura.

We have rotated the upside-down images!
Simon drawing a diagram explaining how a camera obscura works.
We have also taken a couple real photographs (using photo-paper), those still need to be developed.
At the photo-lab.