oletusten

Oletusten is the genitive plural of the Finnish noun olettus, meaning an assumption or presumption. The form is used to refer to multiple assumptions in relation to a statement, theory, or model. The noun olettus derives from the verb olettaa, “to suppose,” through the productive suffix -us that forms abstract nouns.

In usage, oletusten appears in phrases with postpositions that govern the genitive, such as mukaan (“according to the assumptions”), perusteella (“based on the assumptions”), or valossa (“in light of the assumptions”). Common sentences: "Oletusten mukaan tutkimus etenee suunnitellusti." "Oletusten perusteella malli ennustaa tuloksia." "Oletusten valossa suunnitelma muuttuu." These constructions help to frame arguments, analyses, or forecasts by noting the starting premises.

In scientific and analytic writing, olettukset are treated as explicit premises to be tested or justified. They should be stated clearly and assessed for plausibility and potential impact on conclusions. The term olettus itself is related to other Finnish words such as olettaa (to suppose) and olettama (an assumption, a conjecture). The genitive plural form oletusten is frequently encountered in formal Finnish, especially in reports, papers, and academic discussions.