Heretofore
131Empty set — ∅ redirects here. For similar looking symbols, see Ø (disambiguation). The empty set is the set containing no elements. In mathematics, and more specifically set theory, the empty set is the unique set having no elements; its size or cardinality… …
132Edward de Vere, 17th Earl of Oxford — The Earl of Oxford Edward de Vere, 17th Earl of Oxford, unknown artist after lost orig …
