Collections
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Thomae's Collection
Carl Johannes Thomae introduced a famous function in his 1875 textbook. It...
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Featured Products
Handpicked products from our newest collections!
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7 Bridges Collection
The medieval city of Königsberg in Prussia had seven bridges. It was...
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Optimal Packing Collection
In 1997 John Bidwell discovered what is still today the best known...
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Pigeonhole Collection
The Pigeonhole Principle states: if there are more pigeons than there are holes,...
