Karl Weierstrass

Karl Theodor Wilhelm Weierstrass (German: Weierstraß [ˈvaɪɐʃtʁaːs];[1] 31 October 1815 – 19 February 1897) was a German mathematician often cited as the "father of modern analysis". Despite leaving university without a degree, he studied mathematics and trained as a school teacher, eventually teaching mathematics, physics, botany and gymnastics.[2] He later received an honorary doctorate and became professor of mathematics in Berlin.

Karl Weierstrass
Karl Weierstraß
Born(1815-10-31)31 October 1815
Died19 February 1897(1897-02-19) (aged 81)
NationalityGerman
Alma mater
Known for
Awards
Scientific career
FieldsMathematics
InstitutionsGewerbeinstitut, Friedrich Wilhelm University
Academic advisorsChristoph Gudermann
Doctoral students

Among many other contributions, Weierstrass formalized the definition of the continuity of a function, proved the intermediate value theorem and the Bolzano–Weierstrass theorem, and used the latter to study the properties of continuous functions on closed bounded intervals.


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