foundations of mathematics. in foundations of mathematics: Foundational logic. ...1, where 0 is the empty set and 1 is the set consisting of 0 alone. Both definitions require an extralogical axiom to make them workâthe axiom of infinity, which postulates the existence of an infinite set.
Extend your Hershey getaway with an exciting trip to our favorite family attractions in nearby Harrisburg, Gettysburg, and Lancaster! Harrisburg is home to the State Capitol Building, award-winning state museum, and the National Civil War Museum. For information, call 1-800-995-0969 or 1-800-VISIT PA (847-4872).
For Couples. For Outdoor Enthusiasts. For Families. âThereâs nothing to do!â You wonât hear that during your trip to the Hershey Harrisburg Region. You can fill a weekend trip with things to do and there will still be more to see, taste, and enjoy. Our region calls for an extended stay, or another trip all together, after you discover everything our destination offers.