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Displaying 161 – 180 of 204

Hopf Galois structures on degree $p^{2}$ cyclic extensions of local fields.

Childs, Lindsay N. (1996)

The New York Journal of Mathematics [electronic only]

Hopf structure and the Kummer theory of formal groups.

M.J. Taylor (1987)

Journal für die reine und angewandte Mathematik

Hopf-Galois module structure of tame biquadratic extensions

Paul J. Truman (2012)

Journal de Théorie des Nombres de Bordeaux

In [14] we studied the nonclassical Hopf-Galois module structure of rings of algebraic integers in some tamely ramified extensions of local and global fields, and proved a partial generalisation of Noether’s theorem to this setting. In this paper we consider tame Galois extensions of number fields $L / K$ with group $G ≅ C_{2} \times C_{2}$ and study in detail the local and global structure of the ring of integers $𝔒_{L}$ as a module over its associated order $𝔄_{H}$ in each of the Hopf algebras $H$ giving a nonclassical Hopf-Galois structure...

Horizontal Factorizations of Certain Hasse-Weil Zeta Functions - a Remark on a Paper by Taniyama

Christopher Deninger, Dimitri Wegner (2012)

Rendiconti del Seminario Matematico della Università di Padova

Horizontal monotonicity of the modulus of the zeta function, L-functions, and related functions

Yu. Matiyasevich, F. Saidak, P. Zvengrowski (2014)

Acta Arithmetica

As usual, let s = σ + it. For any fixed value of t with |t| ≥ 8 and for σ < 0, we show that |ζ(s)| is strictly decreasing in σ, with the same result also holding for the related functions ξ of Riemann and η of Euler. The following inequality related to the monotonicity of all three functions is proved: ℜ (η'(s)/η(s)) < ℜ (ζ'(s)/ζ(s)) < ℜ (ξ'(s)/ξ(s)). It is also shown that extending the above monotonicity result for |ζ(s)|, |ξ(s)|, or |η(s)| from σ <...

Horizontal sections of connections on curves and transcendence

C. Gasbarri (2013)

Acta Arithmetica

Let K be a number field, X be a smooth projective curve over it and D be a reduced divisor on X. Let (E,∇) be a vector bundle with connection having meromorphic singularities on D. Let $p_{1}, . . ., p_{s} \in X (K)$ and $X^{o} : = X ̅ ∖ D, p_{1}, . . ., p_{s}$ (the $p_{j}$ ’s may be in the support of D). Using tools from Nevanlinna theory and formal geometry, we give the definition of E-section of arithmetic type of the vector bundle E with respect to the points $p_{j}$ ; this is the natural generalization of the notion of E-function defined in Siegel-Shidlovskiĭ theory. We prove...