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Historical Mathematics
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Demonstrations 221  240 of 389
The SeeSaw Lemma
The Number of Partitions into Odd Parts Equals the Number of Partitions into Distinct Parts
Da Vinci's Proof of the Pythagorean Theorem
Euclid, Book 3, Proposition 22
Tightly Packed Squares
Propositional Logic Test
A Dissection Proof of Pythagoras's Theorem
Lewis Carroll's Diagram and Categorical Syllogisms
Hasse Diagram of Power Sets
Enumerating Pythagorean Triangles
Vičte's Nested Square Root Representation of Pi
The Eutrigon Theorem
Another Knights and Knaves Puzzle Generator
Deaf Island Puzzle Generator
Propositional Logic Puzzle Generator
Twin Pythagorean Triples
Bochvar's ThreeValued Logic
Lukasiewicz's ThreeValued Logic
Cayley Tables for Small Groups and Moufang Loops
Heilbronn Volumes
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