Vinculum: a horizontal line drawn over a group of terms in a mathematical expression to indicate that they are to be operated on as a single entity by the preceding or following operator.
Hiawatha: Hiawatha, a skilled and charismatic orator, was a follower of the Great Peacemaker (Deganawida), a Huron prophet and spiritual leader who proposed the unification of the Iroquois peoples, who shared common ancestry and similar languages.
Ayida Wedo: In Vodou, especially in Benin and Haiti, Ayida-Weddo is a loa of fertility, rainbows, wind, water, fire, and snakes.
Zermelo: Zermelo set theory, as set out in an important paper in 1908 by Ernst Zermelo, is the ancestor of modern set theory. It bears certain differences from its descendants, which are not always understood, and are frequently misquoted.