kidzsearch.com > wiki
Karl Weierstraß
KidzSearch Safe Wikipedia for Kids.
Karl Weierstrass  

painting by Conrad Fehr , 1895  
Born  Kingdom of Prussia  31 October 1815
Died  19 February 1897 Berlin, Kingdom of Prussia  (aged 81)
Nationality  German 
Fields  Mathematics 
Institutions  Gewerbeinstitut 
Alma mater  University of Bonn 
Doctoral students  
Known for 

Notable awards 

Karl Theodor Wilhelm Weierstraß (31 October 1815  19 February 1897) was a German mathematician. Most of his work is about using logic as a thorough foundation of analysis. He mainly used power series for this. He also provided foundations for the theory of elliptic functions, differential geometry and the calculus of variations. The BolzanoWeierstrass theorem is named in his honour: according to the theorem, finite series have certain properties: finite convergent series of complex numbers have at least one limit point, those of real numbers have at least two. He criticised earlier mathematicians for using assumptions too often, and being too vague in their definitions.