ThmDex – An index of mathematical definitions, results, and conjectures.
▼ Set of symbols
▼ Alphabet
▼ Deduction system
▼ Theory
▼ Zermelo-Fraenkel set theory
▼ Set
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▼ Hyperpower set sequence
▼ Hyperpower set
▼ Hypersubset
▼ Subset algebra
▼ Boolean algebra
▼ Sigma-algebra
▼ Discrete sigma-algebra
▼ Discrete measurable space
▼ Point-mass measure
▼ Counting measure
▼ Counting measure space
▼ Standard counting measure space
Definition D5641
Standard counting measure space of basic natural numbers
Formulation 0
A triple $M = (\mathbb{N}, \mathcal{P}(\mathbb{N}), \#)$ is the standard counting measure space of basic natural numbers if and only if
(1) $\mathbb{N}$ is the D225: Set of natural numbers
(2) $\mathcal{P}(\mathbb{N})$ is a D80: Power set for $\mathbb{N}$
(3) $\#$ is the D5637: Standard basic natural number counting measure on $M$