The plan for today is to take some pain medicine, finish packing, and watch at least one good movie. I may try to go for a run, as the half marathon is less than a month away, but weâll see how Iâm feeling later. The moral of the story is: Iâm happy. Iâm ready.
Extensional definition. An extensional definition of a concept or term formulates its meaning by specifying its extension, that is, every object that falls under the definition of the concept or term in question.
The empty set is a subset of every set. Let's define subset. A set is a subset of another set if every element of the set is also an element of the other set. Set A is a subset of Set B if every element of A is also an element of B.