Set/Examples/Living People

From ProofWiki
Jump to navigation Jump to search

Example of Set

Let $P$ denote the set of living people.

Then:

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


Sources