liidetav

Liidetav is an Estonian adjective meaning addable, summable, or capable of being expressed as a sum. It is formed from the verb liita, “to add,” combined with the suffix -dav, which marks a property. The term is used both in everyday language and in technical contexts to describe objects or quantities that can be decomposed into additive parts.

In mathematics and related fields, liidetav describes entities that can be written as a sum of components. For example, a function or a measure may be described as liidetav if it can be represented as the finite or countable sum of simpler elements, under suitable conditions of convergence or disjointness. In measure theory, additive properties parallel the common mathematical notion of additivity, where the value of a combined set equals the sum of values of its disjoint parts.

In broader technical usage, liidetav can be applied to concepts that admit compositional construction by addition. This can include modular systems, data structures, or numerical representations where larger quantities are obtained by summing smaller contributions. The emphasis is on the possibility and validity of decomposition into additive components, rather than on a specific formal definition.

See also: additivity, summability, additive functions, decomposition, composability.