Set/Examples/Living People

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Example of Set

Let $P$ denote the set of living people.

Then:

\(\displaystyle \text {The person reading this web page}\) \(\in\) \(\displaystyle P\) $\quad$ $\quad$
\(\displaystyle \text {Julius Caesar}\) \(\notin\) \(\displaystyle P\) $\quad$ $\quad$
\(\displaystyle -4\) \(\notin\) \(\displaystyle P\) $\quad$ $\quad$


Sources