Designs, Codes and Cryptography - Special issue on towards a quarter-century of public key cryptography
Irreducible trinomials over finite fields
Mathematics of Computation
Efficient pth root computations in finite fields of characteristic p
Designs, Codes and Cryptography
A note on the reducibility of binary affine polynomials
Designs, Codes and Cryptography
Finite Fields and Their Applications
On the distribution of irreducible trinomials over F3
Finite Fields and Their Applications
Parity of the number of irreducible factors for composite polynomials
Finite Fields and Their Applications
The parity of the number of irreducible factors for some pentanomials
Finite Fields and Their Applications
Swan's theorem for binary tetranomials
Finite Fields and Their Applications
Factorization of Trinomials over Galois Fields of Characteristic 2
Finite Fields and Their Applications
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Swan (Pac. J. Math. 12:1099---1106, 1962) gives conditions under which the trinomial x n + x k + 1 over $${\mathbb{F}_{2}}$$ is reducible. Vishne (Finite Fields Appl. 3:370---377, 1997) extends this result to trinomials over extensions of $${\mathbb{F}_{2}}$$ . In this work we determine the parity of the number of irreducible factors of all binomials and some trinomials over the finite field $${\mathbb{F}_{q}}$$ , where q is a power of an odd prime.