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Historical Mathematics
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Demonstrations 61  80 of 322
Ramanujan R and S
Roman Numeral Calculator
Iterating the Collatz Map on Real and Complex Numbers
Optimizing the Counterweight Trebuchet
CalkinWilf Tree of Fractions
Minimally Squared Rectangles
Nomogram for the Geometric Mean
A Parabola Sieve for Prime Numbers
Dudeney's Proof of the Pythagorean Theorem
Fundamental Theorem of Arithmetic
How Old Were Some Famous Mathematicians?
Generic Euler's Elastica
Equality of a Segment and an Arc in Archimedes's Spiral
Nicomedes's Mechanism for Constructing a Conchoid
Primitive Pythagorean Triples on a Curvilinear Grid Defined by Euclid's Formula
Trisecting an Angle Using a Conchoid
Girih Tiles
OrchardPlanting Problem
Archimedes' Approximation of Pi
abc Conjecture
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