Appaloosa (film) Appaloosa (film) Appaloosa is a 2008 American Western film based on the 2005 novel "Appaloosa" by crime writer Robert B. Parker. Directed by Ed Harris and co-written by Harris and Robert Knott, "Appaloosa" stars Harris alongside Viggo Mortensen, Renée Zellweger and Jeremy Irons. The film premiered at 2008 Toronto International Film Festival and was released in selected cities on September 19, 2008, then expanded into wide-release on October 3, 2008. The film shares some narrative similarities with the 1959 Western "Warlock", directed by Edward Dmytryk and starring Henry Fonda, Anthony Quinn and Richard Widmark. There is also a 1966 Western
Directed set notions of limit used in analysis. Directed sets also give rise to direct limits in abstract algebra and (more generally) category theory. In addition to the definition above, there is an equivalent definition. A directed set is a set "A" with a preorder such that every finite subset of "A" has an upper bound. In this definition, the existence of an upper bound of the empty subset implies that "A" is nonempty. Examples of directed sets include: Directed sets are a more general concept than (join) semilattices: every join semilattice is a directed set, as the join or least upper