## Pages

- about worlds of math & physics
- Electric dance
- Ellipse: geometric proof of the equivalence of two definitions
- How to run CDF demonstrations
- Interesting links
- Mathematical flowers
- Simulations
- A poly function and its derivative
- Anticipatory interaction model for pedestrians
- Duncan Watts’ “Small Worlds” α-model
- Eiffel tower
- Electric dance (CDF simulation)
- Electric dipole
- Function derivatives
- Standing waves in Bohr’s atomic model
- The definite integral as the limit of a Riemann sum
- Wave motion visualization

- Site map
- Strogatz-Vanderbei problem
- The dice roll with a given sum problem

## Posts by category

**Category: CDF demonstrations****Category: General****Category: Math**- Ellipse: geometric proof of the equivalence of two definitions (2016-10-02)
- Mathematical flowers (2015-04-25)
- Apollonian gaskets: beautiful math can be simple (2015-04-07)
- Raindrops (2014-11-28)
- A twisted Eiffel tower (useless but beautiful math) (2014-11-23)
- Waves propagation: the space view and the time view (2014-11-02)
- The mathematics of social networks: understanding the “six degrees of separation” theory (2014-10-19)
- A function and its derivatives (2014-02-25)
- The “dice roll with a given sum” problem (2014-02-14)
- A nice (but not easy) combinatorics problem (2014-02-02)
**Category: Beautiful math**

**Category: Physics**- Electric dance (2017-01-03)
- First direct detection of gravitational waves by LIGO (2016-02-11)
- An anticipatory interaction model for a crowd of pedestrians (2015-02-03)
- Raindrops (2014-11-28)
- Waves propagation: the space view and the time view (2014-11-02)
- The early universe as seen by the ESA’s Planck space telescope (2014-02-19)