In dictionaries:
Graded Lie algebra
In mathematics, a graded Lie algebra is a Lie algebra endowed with a gradation which is compatible with the Lie bracket.
Differential graded algebra
In mathematics – particularly in homological algebra, algebraic topology, and algebraic geometry – a differential graded algebra (or DG algebra, or DGA) is an algebraic structure often used to capture information about a topological or geometric space.
more...