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Historical Mathematics
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Demonstrations 21  40 of 343
Iterating the Collatz Map on Real and Complex Numbers
A Path through the Lattice Points in a Quadrant
Abacus
Doubling a Distance with a Compass
Enumerating the Rational Numbers
Triply Periodic Minimal Surfaces
Wheel Graphs with Integer Edges
How Long Is the Coast of Britain?
Ptolemy's Spheres
Circle Packings with Linear Fractional Transformations
Vernier Scale with Extra Precision
Infinite Magic Elliptic Curves
Plotting Collatz Sequences
Proposition 30, Book XI, Euclid's Elements
Proposition 29, Book XI, Euclid's Elements
Hirano's Construction of a Regular Pentagon
Other Formulations of the Collatz Problem
Proposition 1, Book X, Euclid's Elements
Campanus's Sphere
Collaboration Graph for Paul Erdos Coauthors
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