τ-additivity

τ-additivity

수학에서, 측정 이론 분야에서, τ-additivity위상학적 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.