Aslak Tveito (born 17 February 1961) is a Norwegian

scientist A scientist is a person who Scientific method, researches to advance knowledge in an Branches of science, area of the natural sciences. In classical antiquity, there was no real ancient analog of a modern scientist. Instead, philosophers engag ...

in the field of

numerical analysis Numerical analysis is the study of algorithms that use numerical approximation (as opposed to symbolic computation, symbolic manipulations) for the problems of mathematical analysis (as distinguished from discrete mathematics). It is the study of ...

and

scientific computing Computational science, also known as scientific computing, technical computing or scientific computation (SC), is a division of science, and more specifically the Computer Sciences, which uses advanced computing capabilities to understand and s ...

. Tveito was the

Managing Director A chief executive officer (CEO), also known as a chief executive or managing director, is the top-ranking corporate officer charged with the management of an organization, usually a company or a nonprofit organization. CEOs find roles in variou ...

of the

Simula Research Laboratory Simula Research Laboratory (also known as Simula) is a Norwegian non-profit research organisation located in Oslo, Norway. Simula was founded in 2001 by the Norwegian government to conduct fundamental, long-term research within information and c ...

, a Norwegian research center owned by the

Norwegian Government The politics of Norway take place in the framework of a parliamentary, representative democratic constitutional monarchy. Executive power is exercised by the Council of State, the cabinet, led by the prime minister of Norway. Legislative power ...

, and is

Professor Professor (commonly abbreviated as Prof.) is an Academy, academic rank at university, universities and other tertiary education, post-secondary education and research institutions in most countries. Literally, ''professor'' derives from Latin ...

of Scientific Computing at the

University of Oslo The University of Oslo (; ) is a public university, public research university located in Oslo, Norway. It is the List of oldest universities in continuous operation#Europe, oldest university in Norway. Originally named the Royal Frederick Univ ...

Education and career

Tveito obtained an MSc degree in Numerical Analysis from the University of Oslo, Department of Informatics in 1985. He obtained

PhD A Doctor of Philosophy (PhD, DPhil; or ) is a terminal degree that usually denotes the highest level of academic achievement in a given discipline and is awarded following a course of graduate study and original research. The name of the deg ...

from the same department in 1988, focusing on numerical solution of

partial differential equation In mathematics, a partial differential equation (PDE) is an equation which involves a multivariable function and one or more of its partial derivatives. The function is often thought of as an "unknown" that solves the equation, similar to ho ...

s. In 1991 Tveito joined the Applied Mathematics department at

SINTEF SINTEF (, "The Foundation for Industrial and Technical Research"), headquartered in Trondheim, Norway, is an independent research organization founded in 1950 that conducts contract research and development projects. SINTEF has 2000 employees fr ...

as a research scientist and from 1993 to 1997 held the position of Chief Scientist. He was appointed Professor of Numerical Analysis at the University of Oslo, Department of Informatics in 1994. In 1997 Tveito co-founded Numerical Objects, a company that commercialized the Diffpack software, and served on its board until 2001. Tveito joined the

upon its establishment in 2001 and has been its Managing Director since 2002. The scientific computing activities at Simula have been awarded the top grade, Excellent, in all international evaluations in their lifetime (2001–2015) During this time he has retained his Professorship at the University of Oslo, and also served as

Chairman of the Board The chair, also chairman, chairwoman, or chairperson, is the presiding officer of an organized group such as a Board of directors, board, committee, or deliberative assembly. The person holding the office, who is typically elected or appointed by ...

of Simula Innovation (2006–2008), Kalkulo (2006–2008), Simula School of Research and Innovation (2007–2010), Simula UiB (2016–2017), Simula Metropolitan Center for Digital Engineering (2018–2019) and the Norwegian Defence Research Establishment (2021-). Tveito is a member of the

Norwegian Academy of Technological Sciences The Norwegian Academy of Technological Sciences (, NTVA) is a learned society based in Trondheim, Norway. Founded in 1955, the academy has about 500 members. It is a member of the International Council of Academies of Engineering and Technologica ...

Research

Tveito's research has included the numerical solution of

linear system In systems theory, a linear system is a mathematical model of a system based on the use of a linear operator. Linear systems typically exhibit features and properties that are much simpler than the nonlinear case. As a mathematical abstractio ...

s arising from the discretization of partial differential equations; the numerical and mathematical analysis of hyperbolic conservation laws; mathematical models of

two-phase flow In fluid mechanics, two-phase flow is a flow of gas and liquid — a particular example of multiphase flow. Two-phase flow can occur in various forms, such as flows transitioning from pure liquid to vapor as a result of external heating, sep ...

; upscaling; nonlinear water waves; the numerical solution of the Black-Scholes equations;

parallel computing Parallel computing is a type of computing, computation in which many calculations or Process (computing), processes are carried out simultaneously. Large problems can often be divided into smaller ones, which can then be solved at the same time. ...

for partial differential equations; and numerical software tools. In his early career he focused on

, before shifting to research on software and computing tools, parallel computing, and the application of computational models in science. Since 2005 he has worked almost exclusively on mathematical and computational issues related to understanding the

electrophysiology Electrophysiology (from ee the Electron#Etymology, etymology of "electron" ; and ) is the branch of physiology that studies the electrical properties of biological cell (biology), cells and tissues. It involves measurements of voltage change ...

of the heart. He is involved in th
Centre for Integrative Neuroplasticity
(CINPLA) at the University of Oslo.

Authorship

Tveito has co-authored three research monographs

, 2, 3 The comma is a punctuation mark that appears in several variants in different languages. Some typefaces render it as a small line, slightly curved or straight, but inclined from the vertical; others give it the appearance of a miniature fille ...

and two textbooks in scientific computing

, 5 The comma is a punctuation mark that appears in several variants in different languages. Some typefaces render it as a small line, slightly curved or straight, but inclined from the vertical; others give it the appearance of a miniature fille ...

He has co-edited seven books, and has published more than 100 papers in international journals, collections, and proceedings. A complete publication list can be found a
Google Scholar
Tveito is on the editorial board o
Encyclopedia of Applied and Computational Mathematics

Selected bibliography

# Sundnes, G. T. Lines, X. Cai, B. F. Nielsen, K.-A. Mardal, and A. Tveito.
Computing the Electrical Activity in the Heart
'. Springer-Verlag Berlin Heidelberg, 2006. # A. Tveito and G. Lines.
Computing characterizations of drugs for ion channels and receptors using Markov models
'. Springer-Verlag, lecture notes in Computational Science and Engineering, vol 111, 2016. #A. Tveito, K.A. Mardal, and M. Rognes
Modeling Excitable Tissue
Simula SpringerBriefs on Computing, 2021. ISBN 978-3-030-61156-9 # A. Tveito and R. Winther. ''Introduction to partial differential equations. A computational approach.'' Springer-Verlag Berlin-Heidelberg, 2nd ed. 2009. (also available in German). # A. Tveito, H. P. Langtangen, B. F. Nielsen, and X. Cai,
Elements of Scientific Computing
'' Springer-Verlag Berlin-Heidelberg, 2010.

References

{{DEFAULTSORT:Tveito, Aslak 1961 births Living people University of Oslo alumni Academic staff of the University of Oslo Norwegian mathematicians Norwegian computer scientists Members of the Norwegian Academy of Technological Sciences