(Copy the URL to share your yard sign)
In this house we believe: Sets exist Sets with the same elements are equal For any two sets, there’s a set containing both Filtering a set makes a subset A set of sets can be union’d into a set The set of all subsets of a set, the powerset, exists Sets can be infinite, like <b>ℕ</b> Applying a function to the elements of a set makes a set No set contains itself A set’s elements can be put in order There is no <b>∞</b> between the sizes of <b>ℕ</b> and the powerset of <b>ℕ</b>