Almost commutative ring
In algebra, a filtered ring A is said to be almost commutative if the associated graded ring is commutative.
Basic examples of almost commutative rings involve differential operators. For example, the enveloping algebra of a complex Lie algebra is almost commutative by the PBW theorem. Similarly, a Weyl algebra is almost commutative.
See also
- Ore condition
- Gelfand–Kirillov dimension
References
- Victor Ginzburg, Lectures on D-modules
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