math and sims

Write-ups and interactive simulators.

Lattice Polygons

How many polygons have exactly 4 border points and 1 interior point?

write-up

Slope Distance Coordinates

Locating points by slope and distance from the origin.

write-up

Rolling Skewered Cube

Simulator of a cube with an axle skewered through it.

simulator

Triangle Graph Transform

Transform graphs by the area of a triangle at each point.

simulator

Bobo Vector Automaton

Deterministic particle motion automaton.

simulator