๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Reconstruction of Function Fields

โœ Scribed by Fedor Bogomolov; Yuri Tschinkel


Publisher
Springer
Year
2008
Tongue
English
Weight
592 KB
Volume
18
Category
Article
ISSN
1016-443X

No coin nor oath required. For personal study only.


๐Ÿ“œ SIMILAR VOLUMES


Reconstruction of shapes and impedance f
โœ Lin He; Stefan Kindermann; Mourad Sini ๐Ÿ“‚ Article ๐Ÿ“… 2009 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 520 KB

We consider the reconstruction of complex obstacles from few far-field acoustic measurements. The complex obstacle is characterized by its shape and an impedance function distributed along its boundary through Robin type boundary conditions. This is done by minimizing an objective functional, which

Function Fields of Pfister Neighbors
โœ H. Ahmad; J. Ohm ๐Ÿ“‚ Article ๐Ÿ“… 1995 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 585 KB

A quadratic form \(Q\) is called a special Pfister neighbor if \(Q\) is similar to a form of the shape \(P_{0} \perp a P_{1}\), where \(P_{0}\) is Pfister, \(a \in k^{*}\), and \(P_{1}\) is a nonzero subform of \(P_{0}\). The Pfister form \(P_{0} \perp a P_{0}\), which is uniquely determined by \(Q\

Function fields of quadratic forms
โœ Robert W. Fitzgerald ๐Ÿ“‚ Article ๐Ÿ“… 1981 ๐Ÿ› Springer-Verlag ๐ŸŒ French โš– 665 KB
Function fields of Pfister forms
โœ R. Elman; T. Y. Lam; A. R. Wadsworth ๐Ÿ“‚ Article ๐Ÿ“… 1979 ๐Ÿ› Springer-Verlag ๐ŸŒ English โš– 803 KB
Levels of Function Fields of Surfaces ov
โœ U. Jannsen; R. Sujatha ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 87 KB

We study the level of nonformally real function fields of surfaces over number fields and show that it is at most 4 for a large class of surfaces. ๏ฃฉ 2002 Elsevier Science (USA) The level of a field F is the least integer n such that -1 is expressible as a sum of n squares in F. If -1 is not a sum o