Eivind Eriksen
Professor in Mathematics at BI Norwegian Business School. Author of several textbooks in mathematics, and coauthor of the research monograph Noncommutative Deformation Theory. Investor in common stocks, mostly on Oslo Børs and NYSE/Nasdaq. I listen to Rule Breaker Investing and realize that I have always been a Rule Breaker. I write as @eivinderiksen on Twitter, and as Eivind Eriksen on LinkedIn.
Nothing in the world can take the place of persistence. Talent will not; nothing is more common than unsuccessful men with talent. Genius will not; unrewarded genius is almost a proverb. Education will not; the world is full of educated derelicts. Persistence and determination alone are omnipotent. The slogan Press On! has solved and always will solve the problems of the human race.
News 

10/2021: My new workbook for Graduate Mathematics is out this week: Graduate Mathematics for Business, Economics and Finance  Problems and Solutions 
07/2021: My new textbook is out: Graduate Mathematics for Business, Economics and Finance (to be used in GRA6035/ELE3781 this fall) 
02/2020: I received BI Best Teacher Award 2020 
01/2020: The paper Iterated Extensions and Uniserial Length Categories has been accepted for publication in Algebr. Represent. Theory 
11/2019: The paper The algebra of observables in noncommutative algebraic geometry (joint work with A. Siqveland) is accepted for publication in J. Algebra. 
Research
My main research interests are noncommutative deformation theory and noncommutative algebraic geometry, differential structures in algebraic geometry (rings of differential operators, connection on modules, Dmodules), and representation theory. For details on my research, see research and publications.
Selected Published books and papers:  

Iterated Extensions and Uniserial Length Categories, Algebras and Representation Theory 24 (2021), 273286  
The algebra of observables in noncommutativ deformation theory (with A. Siqveland), J. Algebra 547 (2020), 162172  
Noncommutative Deformation Theory (with O.A. Laudal and A. Siqveland), Monographs and Research Notes in Mathematics, Chapman and Hall/CRC, 2017  Book review  
Computing noncommutative deformations of presheaves and sheaves of modules, Canad. J. Math. 62 (2010), no. 3, 520542  
Connections on modules over singularities of finite CM representation type (with T.S. Gustavsen), J.Pure Appl. Algebra 212 (2008), no. 7, 15611574  
Connections on modules over quasihomogeneous plane curves, Comm. Algebra 36 (2008), no. 8, 3032  3041  
Differential operators on monomial curves, J. Algebra 264 (2003), no. 1, 186198 
Teaching
I teach mathematics and statistics at the bachelor, master and doctoral level at BI Norwegian Business School. For the time being, I am teaching the following courses:
Graduate:  

FORK 1003 Preparatory course MSc. Preparatory course for MSc students in Business/Finance  
GRA 6035 Mathematics. Mathematics for MSc students in Business/Finance  
DRE 7017 Mathematics PhD. Mathematics for PhD students in Economics/Finance  


Undergraduate:  
MET 1180 Matematikk for siviløkonomer. Mathematics for BSc students in Business  
EBA 2910 Mathematics for Business Analytics. Mathematics for BSc students in Business Analytics  
ELE 3781 Mathematics elective. Mathematics elective for BSc students in Business Analytics 