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- Emanuel_Sperner abstract "Emanuel Sperner (9 December 1905 – 31 January 1980) was a German mathematician, best known for two theorems. He was born in Waltdorf (near Neiße, Upper Silesia, now Nysa, Poland), and died in Sulzburg-Laufen, West Germany. He was a student at Hamburg University where his advisor was Wilhelm Blaschke. He was appointed Professor in Königsberg in 1934, and subsequently held posts in a number of universities until 1974. Sperner's theorem, from 1928, says that the size of an antichain in the power set of an n-set (a Sperner family) is at most the middle binomial coefficient(s). It has several proofs and numerous generalizations, including the Sperner property of a partially ordered set.Sperner's lemma, from 1928, states that every Sperner coloring of a triangulation of an n-dimensional simplex contains a cell colored with a complete set of colors. It was proven by Sperner to provide an alternate proof of a theorem of Lebesgue characterizing dimensionality of Euclidean spaces. It was later noticed that this lemma provides a direct proof of the Brouwer fixed-point theorem without explicit use of homology.Sperner's students included Kurt Leichtweiss and Gerhard Ringel.".
- Emanuel_Sperner birthDate "1905-12-09".
- Emanuel_Sperner birthPlace Waltdorf.
- Emanuel_Sperner birthYear "1905".
- Emanuel_Sperner deathDate "1980-01-31".
- Emanuel_Sperner deathPlace Sulzburg.
- Emanuel_Sperner deathYear "1980".
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- Emanuel_Sperner dateOfBirth "1905-12-09".
- Emanuel_Sperner dateOfDeath "1980-01-31".
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- Emanuel_Sperner name "Sperner, Emanuel".
- Emanuel_Sperner placeOfBirth "Waltdorf, Silesia".
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- Emanuel_Sperner shortDescription "German mathematician, best known for two theorems".
- Emanuel_Sperner description "German mathematician, best known for two theorems".
- Emanuel_Sperner description "German mathematician, best known for two theorems".
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- Emanuel_Sperner comment "Emanuel Sperner (9 December 1905 – 31 January 1980) was a German mathematician, best known for two theorems. He was born in Waltdorf (near Neiße, Upper Silesia, now Nysa, Poland), and died in Sulzburg-Laufen, West Germany. He was a student at Hamburg University where his advisor was Wilhelm Blaschke. He was appointed Professor in Königsberg in 1934, and subsequently held posts in a number of universities until 1974.".
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