Editing Associative algebra (section)

=== Geometry and combinatorics ===
* The [[Clifford algebra]]s, which are useful in [[geometry]] and [[physics]].
* [[Incidence algebra]]s of [[locally finite poset|locally finite]] [[partially ordered set]]s are associative algebras considered in [[combinatorics]].
* The [[partition algebra]] and its subalgebras, including the [[Brauer algebra]] and the [[Temperley-Lieb algebra]].
* A [[differential graded algebra]] is an associative algebra together with a grading and a differential. For example, the [[de Rham algebra]] <math display="inline">\Omega(M) = \bigoplus_{p=0}^n \Omega^p(M)</math>, where <math display="inline">\Omega^p(M)</math> consists of differential ''p''-forms on a manifold ''M'', is a differential graded algebra.