### Happy pi day

###### Sat 14 March 2015

[caption id="" align="alignright" width="75" class="zemanta-img"] Pi Pie (Photo credit: Wikipedia)[/caption]

On this Pi day, I would like to enumerate all uses of pi I know. There are more (listed here):

(Non-)Related articles

Category: maths Tagged: Pi Day useless, maths

### big cloud data

###### Sun 02 February 2014

[caption id="" align="alignright" width="350"] Big cloud not computing (Photo credit: Wikipedia)[/caption]

This post should be untitled From cloud computing to big data to fast data.

## computing

[caption id="" align="alignright" width="75"] Cloud computing (Photo credit: Wikipedia)[/caption]

Once upon a …

### Puzzle

###### Mon 20 January 2014

[caption id="" align="alignright" width="103"] Famous 3D puzzle (Photo credit: Wikipedia)[/caption]

The question is: what is a puzzle? The answer I prefer is: a riddle whose solution is hard to find but easy to verify. In computer science, it's used to provide proof-of-work and usually implemented through cryptographic …

### music physics: rhythms

###### Fri 03 January 2014

[caption id="" align="alignright" width="300"] Natural rhythms generator[/caption]

I'm still interesseted in music (de)composition. In this post, I want to focus on rhythm, i.e. only when a note is played and for how many time.

## notation

I will use the usual notation is sheets.

## note duration …

Category: maths Tagged: bar beat duration note rhythm Typesetting musi maths

### music physics: notes

###### Mon 23 December 2013

Explications here are based on what I've learn thanks to this youtube channel and the related researches (including the famous french documentary series c'est pas sorcier)

## sound physics

For this post, we will use the following definitions:

• a sound: fluid vibration (air, water, ...) that reach our ears
• a noise: a …

Category: maths