Fastevärdet

Fastevärdet is a Swedish term used in technical contexts to denote a value that remains constant within a given model, calculation, or computation. It is often used as a baseline, reference, or fixed parameter, distinguishing it from quantities that vary with conditions or over time.

Etymology: The word is composed of faste, meaning fixed or steady, and värde, meaning value.

Applications: In mathematics and natural sciences, fastevärdet refers to a constant parameter that does not depend on the main variable. In programming or simulation, it corresponds to a constant literal or a value chosen at design time rather than computed during execution. In economics or statistics, fastevärdet can denote a known quantity used to anchor models, such as a fixed interest rate or a baseline level.

Examples: A differential equation with a constant forcing term c uses c as a fastevärde. A numerical model may fix the timestep Δt as a fastevärde. In a budget model, a fixed tax rate can be described as a fastevärde of tax income.

Notes: The exact meaning of fastevärdet varies by discipline, and some contexts prefer terms like konstant or referensvärde. When using the term, one should specify the context to avoid ambiguity.