Abstract
Given a Laurent polynomial over a flat \(\mathbf {Z}\)-algebra, Vlasenko defines a formal group law. We identify this formal group law with a coordinate system of a formal group functor. When the “Hasse–Witt matrix” of the Laurent polynomial is invertible, Vlasenko defines a matrix by taking a certain \(p\)-adic limit. We show that this matrix is the Frobenius of the Dieudonné module of this formal group modulo \(p\).
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