Saved in:
| Main Authors: | , |
|---|---|
| Format: | Preprint |
| Published: |
2019
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/1909.02608 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Table of Contents:
- We give iterative constructions for irreducible polynomials over F_q of degree nt^r for all nonnegative integers r, starting from irreducible polynomials of degree n. The iterative constructions correspond modulo fractional linear transformations to compositions with power functions x^t. The R-transform introduced by Cohen is recovered as a particular case corresponding to x^2, hence we obtain a generalization of Cohen's R-transform (t=2) to arbitrary degrees t bigger that two. Important properties like self-reciprocity and invariance of roots under certain automorphisms are deduced from invariance under multiplication by appropriate roots of unity. Extending to quadratic extensions of F_q we recover and generalize a recently obtained recursive construction of Panario, Reis and Wang.