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math.NT2022
Inducing braces and Hopf Galois structures
Teresa Crespo, Daniel Gil-Muñoz, Anna Rio +1
Let be a prime number and let be an integer not divisible by and such that every group of order has a normal subgroup of order . (This holds in particular for $…
math.NT2013★ 3 cited
The Hopf Galois property in subfield lattices
Teresa Crespo, Anna Rio, Montserrat Vela
Hopf Galois theory for finite separable field extensions was introduced by Greither and Pareigis. They showed that all Hopf Galois extensions of degree up to 5 are either Galois or…