Gelfand–Kirillov dimension

E270385

The Gelfand–Kirillov dimension is an invariant in noncommutative algebra that measures the growth rate of algebras and modules, serving as an analogue of Krull dimension for noncommutative settings.

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Gelfand–Kirillov dimension canonical 1

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Predicate Object
instanceOf algebraic invariant
dimension theory concept
alsoKnownAs GK dimension
appliesTo algebra module
associative algebra
finitely generated algebra
finitely generated module
universal enveloping algebra of a Lie algebra
canTakeValue infinity
nonnegative integer
characterizes exponential growth versus subexponential growth
polynomial growth of algebras
definedUsing asymptotic behavior of dimension of powers of a generating subspace
growth of filtered pieces of an algebra
field homological algebra
noncommutative algebra
representation theory
ring theory
hasProperty monotone on submodules in many settings
often finite for Noetherian finitely generated algebras
hasSpecialCase Gelfand–Kirillov dimension of a commutative finitely generated algebra equals its Krull dimension
historicalPeriod introduced in the 1960s
namedAfter Alexander Kirillov
surface form: Alexandre Kirillov

Israel Gelfand
property invariant under algebra isomorphism
invariant under choice of finite generating subspace
relatedTo Gel'fand–Kirillov conjecture
Hilbert polynomial
Krull dimension
growth function of an algebra
role analogue of Krull dimension in noncommutative settings
measure of growth rate
typicalDomain finitely generated algebra over a field
typicalValueFor finite-dimensional algebra has GK dimension 0
free algebra on d generators has infinite GK dimension
polynomial algebra in n variables has GK dimension n
usedFor bounding homological invariants
classification of noncommutative algebras
study of enveloping algebras of Lie algebras
study of growth of groups via group algebras
study of primitive ideals
usedIn noncommutative projective geometry
study of Noetherian algebras
study of graded algebras
theory of quantum groups
usedToDefine GK-dimension filtration in representation theory
notion of GK-critical modules
valueType extended real number

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Israel Gelfand knownFor Gelfand–Kirillov dimension