Clebsch–Aronhold invariants

E262451

The Clebsch–Aronhold invariants are classical algebraic invariants associated with binary forms, particularly quartic forms, that play a key role in invariant theory and the classification of algebraic curves.

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Label Occurrences
Clebsch–Aronhold invariants canonical 2

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Statements (46)

Predicate Object
instanceOf algebraic invariant
classical invariant
object in invariant theory
appliesTo binary forms
binary quartic forms
associatedWith binary quartic representation of four-point configurations on P1
genus-one curves represented as double covers of the projective line
j-invariant of elliptic curves
assumes base field of characteristic not equal to 2 or 3
context 19th-century German school of algebra
classical theory of binary forms
degree 2
3
dependsOn coefficients of a binary quartic form
field algebraic geometry
classical algebra
invariant theory
hasComponent cubic invariant of a binary quartic
quadratic invariant of a binary quartic
introducedIn 19th century
invariantUnder SL(2) action on binary quartic forms
change of homogeneous coordinates on the projective line
mathematicalDomain computational invariant theory
representation theory of SL(2)
namedAfter Alfred Clebsch
Siegfried Aronhold
property generate the algebra of invariants of binary quartic forms over characteristic 0
polynomial functions in the coefficients of the form
remain unchanged under linear change of variables with determinant 1
relatedTo Hilbert basis of invariants
Hilbert’s work on invariants
absolute invariants of quartic forms
covariants of binary forms
discriminant of a binary quartic form
PSL(2,\mathbb{C})
surface form: projective linear group PGL(2)

symbolic method in invariant theory
syzygies among invariants of binary forms
usedFor classification of algebraic curves
classification of binary quartic forms
construction of moduli of binary quartics
describing orbits of binary quartics under SL(2)
distinguishing non-isomorphic quartic curves up to projective transformations
expressing projective invariants of four points on the projective line
study of projective equivalence classes of quartic forms
usedIn classification of quartic polynomials up to linear fractional transformations
construction of moduli space of binary quartics

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Referenced by (2)

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

Alfred Clebsch notableWork Clebsch–Aronhold invariants
Alfred Clebsch notableConcept Clebsch–Aronhold invariants