This document defines several mathematical concepts using formal logic notation:
1. It defines logical implications and equivalences between propositions involving variables p, q, and r.
2. It defines a set of sets as having three specific sets as elements.
3. It defines a power set containing only the empty set and a singleton set.
4. It defines a partially ordered set involving a set of integers less than or equal to 3.
This document defines several mathematical concepts using formal logic notation:
1. It defines logical implications and equivalences between propositions involving variables p, q, and r.
2. It defines a set of sets as having three specific sets as elements.
3. It defines a power set containing only the empty set and a singleton set.
4. It defines a partially ordered set involving a set of integers less than or equal to 3.