Foehn wind Labeling for preparations of aspirin combined with caffeine, codeine and the like will sometimes include "Föhnkrankheit" amongst the indications. Evidence for effects from Chinook winds remain anecdotal. The name "Foehn" (, ) arose in the Alpine region. Originating from Latin "(ventus) favonius", a mild west wind of which Favonius was the Roman personification and probably transmitted by or just "fuogn", the term was adopted as . In the Southern Alps, the phenomenon is known as föhn but also and fen in Croatian and Slovene. The German word "Fön" (without the "H", but pronounced the same way), a genericized trademark, also
Dirichlet boundary condition and are given numbers. For a partial differential equation, for example, where denotes the Laplace operator, the Dirichlet boundary conditions on a domain take the form where is a known function defined on the boundary . For example, the following would be considered Dirichlet boundary conditions: Many other boundary conditions are possible, including the Cauchy boundary condition and the mixed boundary condition. The latter is a combination of the Dirichlet and Neumann conditions. Dirichlet boundary condition In mathematics, the Dirichlet (or first-type) boundary condition is a type of boundary condition, named after Peter Gustav Lejeune Dirichlet (1805–1859). When imposed on