Berlekamp’s algorithm for factoring polynomials over finite fields

E165811

Berlekamp’s algorithm for factoring polynomials over finite fields is a foundational deterministic method in computational algebra that efficiently decomposes polynomials into irreducible factors over finite fields and underpins many modern algorithms in coding theory and cryptography.

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Statements (47)

Predicate Object
instanceOf algorithm in computational algebra
algorithm over finite fields
deterministic algorithm
polynomial factorization algorithm
appliesTo univariate polynomials over finite fields
assumes finite field of characteristic p
polynomial with coefficients in the given finite field
category algorithms in algebraic coding theory
algorithms in computational number theory
complexityClass polynomial time in the degree and log of field size
contrastWith randomized factorization algorithms such as Cantor–Zassenhaus
enables efficient factorization of high-degree polynomials over small finite fields
fieldOfUse coding theory
computational algebra
cryptography
finite fields
goal factor polynomials into irreducible factors over finite fields
historicalSignificance one of the first efficient general algorithms for factoring polynomials over finite fields
influenced Cantor–Zassenhaus algorithm
modern polynomial factorization algorithms in computer algebra systems
input monic polynomial over a finite field
isDeterministic true
mathematicalFoundation Frobenius endomorphism
linear algebra over GF(p)
structure of finite fields
namedAfter Elwyn R. Berlekamp
output product of irreducible polynomials over the same finite field
property deterministic in contrast to many later randomized algorithms
relatedTo Berlekamp–Massey algorithm
Cantor–Zassenhaus algorithm
Zassenhaus algorithm for factoring over the integers
step compute nullspace of Berlekamp matrix
construct Berlekamp matrix
derive nontrivial factors via polynomial gcds
typicalImplementation Gaussian elimination to find nullspace of Berlekamp matrix
usedIn construction and analysis of error-correcting codes
cryptanalytic attacks involving polynomial factorization over finite fields
decoding of BCH codes
decoding of Reed–Solomon codes
implementation of finite-field arithmetic in computer algebra systems
usesConcept Berlekamp’s algorithm for factoring polynomials over finite fields self-linksurface differs
surface form: Berlekamp subalgebra

greatest common divisor of polynomials
kernel of the Frobenius map minus identity
linear algebra over finite fields
nullspace of a matrix over a finite field
worksOver GF(p)
GF(p^m)

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

Elwyn R. Berlekamp notableWork Berlekamp’s algorithm for factoring polynomials over finite fields
Elwyn R. Berlekamp knownFor Berlekamp’s algorithm for factoring polynomials over finite fields
Elwyn notableFor Berlekamp’s algorithm for factoring polynomials over finite fields
subject surface form: Elwyn R. Berlekamp
Berlekamp’s algorithm for factoring polynomials over finite fields usesConcept Berlekamp’s algorithm for factoring polynomials over finite fields self-linksurface differs
this entity surface form: Berlekamp subalgebra
Berlekamp–Massey algorithm relatedTo Berlekamp’s algorithm for factoring polynomials over finite fields
this entity surface form: Berlekamp algorithm