[tlaplus] Statements in TLA

[marta zhango <martazhango@xxxxxxxxx>]

Have seen that statements in TLA are of the form [A]_p, where A is an action and p is a property.

But what are things without action formalism like

Cardinality(assignments[t])

and expressions such as

/\ assignments \in [Tasks -> SUBSET CPUs]

and

IsSorted(seq) == \A i, j \in 1..Len(seq): i < j => seq[i] <= seq[j]

What are the latter ? Because they do not look like TLA statements
in the form of [A]_p.

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