What is the cardinality of {a,{b,{c,d,e},{f,{g}}}}?
I think it's 2 because the set length of the broadest {} is 2, but I am not sure if the set being nested will affect the cardinality.
2026-04-19 05:16:31.1776575791
Cardinality of a nested set
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The set has two elements: $a$ and $\{b,\{c,d,e\},\{f\{g\}\}\}$. Therefore its cardinality is 2.
The type of elements a set contains does not affects the set's cardinality. What matters is just the number of elements it contains.