منابع مشابه
Twisted Sums , Fenchel - Orlicz Spaces
A twisted sum Z of two Banach spaces X and Y is defined (see [11]) through a short exact sequence: 0 −→ X −→ Z −→ Y −→ 0. These short exact sequences in the category of (quasi-)Banach spaces are considered naturally in the investigation of three space properties (a property P in the category of quasi-Banach spaces is called a three space property if for every short exact sequence as above, Z ha...
متن کاملTwisted T -adic Exponential Sums
The L-function and C-function of twisted T -adic exponential sums are defined. The Hodge bound for the T -adic Newton polygon of the C-function is established. As an application, the T -adic Newton polygons of the L-functions of twisted p-power order exponential sums associated to diagonal forms are explicitly given. 1. Preliminaries Let Fq be the field of characteristic p with q elements, and ...
متن کاملTwisted Connected Sums and Special Riemannian Holonomy
We give a new, connected-sum-like construction of Riemannian metrics with special holonomy G2 on compact 7-manifolds. The construction is based on a gluing theorem for appropriate elliptic partial differential equations. As a prerequisite, we also obtain asymptotically cylindrical Riemannian manifolds with holonomy SU(3) building up on the work of Tian and Yau. Examples of new topological types...
متن کاملNewton Polygons for Twisted Exponential Sums
We study the p-adic absolute value of the roots of the L-functions associated to certain twisted character sums, and additive character sums associated to polynomials P (x d), when P varies among the space of polynomial of fixed degree e over a finite field of characteristic p. For sufficiently large p, we determine in both cases generic Newton polygons for these L-functions, which is a lower b...
متن کاملTwisted Monomial Gauss Sums modulo Prime Powers
We show that twisted monomial Gauss sums modulo prime powers can be evaluated explicitly once the power is sufficiently large.
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ژورنال
عنوان ژورنال: Israel Journal of Mathematics
سال: 1993
ISSN: 0021-2172,1565-8511
DOI: 10.1007/bf02764838