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Historical Mathematics
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Demonstrations 261  280 of 389
Pythagorean Triangles with the Same Area
Binary Operators Satisfying Two Axioms
Gödelization
Fermat's Magic Cube
Proposition 3, Book XII, Euclid's Elements
Any Triangle Can Tile
A Lemma of Archimedes about a Bisected Segment
Tangent Points on a Semicircle
Tangent Circles and Parallel Diameters
Perpendiculars to a Chord
Proof of Proposition 28, Book XI, Euclid's Elements
Ptolemy's Theorem
Euclid's Proof of the Pythagorean Theorem
The Perpendicular Bisector of a Chord
Preferred Values of Collatz Paths
The Two Triangles Theorem
Boolean Algebra
Negligible Senescence Scenario
Conjecture de Beraha pour les cycles (French)
Conjecture de Beraha pour les roues (French)
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