Planetmath Browser (2008—2009)
BSD licence | A django site
All articles taken from PlanetMath.org snapshot under CC-BY-SA licence.
→ The original article on PlanetMath.org
Other Formats: LaTeX
New! You can click on formulas to copy the LaTeX source to your clipboard. | Math Videos
Band
A band is a semigroup in which every element is idempotent.
In semigroup theory, a commutative band is called a semilattice. This is equivalent to the defintion of a semilattice from the theory of partially ordered sets.