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[tlaplus] Re: Defining Cardinality with TLA

Have thought something like this too

Cardinality(set) == (+ e \in DOMAIN set: IF set[e] THEN 1 ELSE 0)

On Friday, April 26, 2024 at 9:17:00 AM UTC+12 marta zhango wrote:
Like this for instance ?

Cardinality (S) = |S| == Count ( e \in S )

On Friday, April 26, 2024 at 8:36:13 AM UTC+12 marta zhango wrote:
How can I define the cardinality of a set as the number of elements in a set S
using the notation |S| using TLA.

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