Retrocognition (also known as postcognition), from the Latin retro meaning "backward, behind" and cognition meaning "knowing", describes "knowledge of a past event which could not have been learned or inferred by normal means". The term was coined by Frederic W. H. Myers.
In mathematics, a completely metrizable space (complete topological space or topologically complete space) is a topological space (X, T) for which there exists at least one metric d on X such that (X, d) is a complete metric space and d induces the topology T. This is equivalent to the condition that X is a Gδ in its Stone–Čech compactification βX.
Powerscourt Estate, located near Enniskerry, County Wicklow, Ireland, is a large country estate which is noted for its house and landscaped gardens, today occupying 19 hectares (47 acres). The house, originally a 13th century castle, was extensively altered during the 18th century by German architect Richard Cassels, starting in 1731 and finishing in 1741. A fire in 1974 left the house lying as a shell until it was renovated in 1996. Today the estate is owned and run by the Slazenger family.
The United States of America has been a member-state of the United Nations since its inception as a supranational entity in 1945. Since the 1990s, amidst the high unpopularity of the UN within the United States, there has been a growing movement for United States withdrawal from the United Nations. Notable proponents, such as U.S.