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George Beck
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Demonstrations 41  60 of 149
Eulerian Numbers versus Stirling Numbers of the First Kind
Multiple Reflections of a Regular Polygon in Its Sides
The FourRunner Problem
Iteratively Reflecting a Point in the Sides of a Triangle
Wythoff's Icosahedral Kaleidoscope
Blood Spatter Trigonometry
Cross Ratios in the Complex Plane
Inverting a Point in the Osculating Circles of a Curve
Differences of the Union of Two Arithmetic Progressions and Christoffel Paths
A Path through the Lattice Points in a Quadrant
Triangulating Random and Regular Polygons
Set Partitions Match Restricted Growth Functions
Rolling a Cube on a Chessboard
Cylinder Area Paradox
Haberdasher's Problem
Dandelin Spheres for an Ellipse
Reflecting a Regular Polygon across Its Sides in the Hyperbolic Plane
How to Avoid a Collision
Rubik's Cube Mechanism
Graphs from ZeroOne Matrices
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