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Historical Mathematics
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Demonstrations 61  80 of 350
Three Proofs of the Pythagorean Theorem
Distributive Property of Multiplication over Addition
Vega's Tables of Common Logarithms to Seven Decimals
Vega's 1794 Table of Common Logarithms
Mrs. Perkins's Quilts
Proofs Using a Quadrature Method of Archimedes
Packing Disks with Consecutive Integer Radii in a Circle
Van der Waerden's Theorem
Unsolved Conjectures about Egyptian Fractions
Reconstruction of de DeckerVlacq's 1628 Table of Common Logarithms
Reconstruction of Vega's First Calculation of Pi
Congruent Numbers
NoThreeinLine Problem
Vega's Calculations of Logarithms
The Euclidean Algorithm and Simple Continued Fractions
Correlating the Mertens Function with the Farey Sequence
The PrimeProduct Ratio of Ramanujan
Calculating Logarithms with a Series
Three Dissections by Leonardo da Vinci
Euler's Estimate of Pi
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