Niels Erik Nörlund
Encyclopedia
Niels Erik Nørlund was a Danish
mathematician
.
His book Vorlesungen über Differenzenrechnung (1924, reprinted 1954) was the first book
on complex function
solutions of difference equations.
Denmark
Denmark is a Scandinavian country in Northern Europe. The countries of Denmark and Greenland, as well as the Faroe Islands, constitute the Kingdom of Denmark . It is the southernmost of the Nordic countries, southwest of Sweden and south of Norway, and bordered to the south by Germany. Denmark...
mathematician
Mathematician
A mathematician is a person whose primary area of study is the field of mathematics. Mathematicians are concerned with quantity, structure, space, and change....
.
His book Vorlesungen über Differenzenrechnung (1924, reprinted 1954) was the first book
on complex function
Complex analysis
Complex analysis, traditionally known as the theory of functions of a complex variable, is the branch of mathematical analysis that investigates functions of complex numbers. It is useful in many branches of mathematics, including number theory and applied mathematics; as well as in physics,...
solutions of difference equations.