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).
Kids 12 and younger can also visit Hershey's Trick-or-Treat Adventure, starting at Hershey's Chocolate World and continuing deep inside Hersheypark in Treatville, our hometown village of sweets and treats. All Hersheypark In The Dark rides and entertainment are included in your one-price admission.