Whitney stratification

E53942

Whitney stratification is a method in differential topology for decomposing singular spaces into smoothly compatible manifolds (strata) that fit together under specific regularity conditions, enabling rigorous analysis of singularities.

All labels observed (5)

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Statements (46)

Predicate Object
instanceOf mathematical concept
stratification
tool in differential topology
appliesTo algebraic varieties
analytic sets
singular spaces
subsets of smooth manifolds
assumption each stratum is a connected smooth submanifold
frontier condition: boundary of a stratum is a union of lower-dimensional strata
condition Whitney stratification self-linksurface differs
surface form: Whitney condition A

Whitney stratification self-linksurface differs
surface form: Whitney condition B
dimensionProperty dimensions of strata strictly decrease along the frontier
ensures compatibility of tangent spaces of strata
controlled behavior of limits of tangent spaces
good geometric fit between strata
field algebraic geometry
differential topology
real analytic geometry
singularity theory
hasPart strata
historicalNote introduced by Hassler Whitney in the 1960s
namedAfter Hassler Whitney
property compatible with many geometric and analytic constructions
refinement of any given decomposition into smooth pieces can often be made Whitney-regular
purpose to analyze singularities rigorously
to decompose singular spaces into smooth manifolds
regularityCondition Whitney stratification self-linksurface differs
surface form: Whitney conditions
relatedConcept Thom–Mather stratification
Whitney stratification self-linksurface differs
surface form: Whitney conditions

o-minimal structure
stratified space
subanalytic set
strataAre locally finite
pairwise disjoint
smooth manifolds
strataUnion the whole space
usedFor constructing stratified spaces
defining stratified mappings
intersection homology
stratified Morse theory
stratified transversality
studying topological invariants of singular spaces
usedIn equisingularity theory
geometric measure theory
microlocal analysis
resolution of singularities

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Referenced by (12)

Full triples — surface form annotated when it differs from this entity's canonical label.

Whitney embedding theorem relatedTo Whitney stratification
Hassler Whitney notableFor Whitney stratification
Hassler Whitney hasConceptNamedAfter Whitney stratification
Whitney stratification condition Whitney stratification self-linksurface differs
this entity surface form: Whitney condition A
Whitney stratification condition Whitney stratification self-linksurface differs
this entity surface form: Whitney condition B
Whitney stratification regularityCondition Whitney stratification self-linksurface differs
this entity surface form: Whitney conditions
Whitney stratification relatedConcept Whitney stratification self-linksurface differs
this entity surface form: Whitney conditions
Hassler notableFor Whitney stratification
subject surface form: Hassler Whitney
Thom–Mather stratification generalizes Whitney stratification
Thom–Mather stratification refines Whitney stratification
Thom–Mather stratification relatedTo Whitney stratification
this entity surface form: Whitney conditions A and B
Thom–Mather stratification isStrongerThan Whitney stratification