Liitännäisyys
Liitännäisyys refers to the concept of additivity in mathematics, particularly in the context of measurements and properties. It is a fundamental principle that states when two or more disjoint entities are combined, the measure of the combined entity is the sum of the measures of the individual entities. This principle applies across various mathematical fields, including set theory, measure theory, and calculus.
In set theory, the cardinality of the union of two disjoint sets is the sum of their
Measure theory extends this concept to more general measures, such as length, area, volume, or probability. If