τ-additivity
τ-additivity수학에서, 측정 이론 분야에서, τ-additivity는 위상학적 공간에 대한 측정의 특정한 속성이다.
A measure µ on a space X, defined on a sigma-algebra Σ is said to be τ-additive, if for any upward-directed family of nonempty open sets, such that its union is in Σ, the measure of the union is the supremum of measures of elements of , i.e.:
참고 항목
참조
- Fremlin, D.H. (2003), Measure Theory, Volume 4, Torres Fremlin, ISBN 0-9538129-4-4.