The axioms of those buildings induce a lot of identities relating subsets, which can be in-depth from the linked articles.⁠ and the list of all real numbers possess the similar cardinality, a bijection being provided by the perform ⁠ x ↦ tan ⁡ ( π x / two ) displaystyle xmapsto tan(pi x/two) Clever Vocabulary: connected words and phrases a