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math.NT2024
Classification of the types for which every Hopf--Galois correspondence is bijective
Lorenzo Stefanello, Cindy Tsang
Let be any finite Galois extension with Galois group . It is known by Chase and Sweedler that the Hopf--Galois correspondence is injective for every Hopf--Galois structure…
math.NT2022★ 14 cited
On the connection between Hopf--Galois structures and skew braces
L. Stefanello, S. Trappeniers
We present a different version of the well-known connection between Hopf--Galois structures and skew braces, building on a recent paper of A. Koch and P. J. Truman. We show that th…