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Algorithms for Function Fields [PDF]

open access: yesExperimental Mathematics, 2002
Let K/Q(t) be a finite extension. We describe algorithms for computingsubfields and automorphisms of K/Q(t). As an application we give an algorithm for finding decompositions of rational functions in Q(α). We also present an algorithm which decides if an extension L/Q(t) is a subfield of K.
openaire   +2 more sources

Pseudo-algebraically closed fields over rational function fields [PDF]

open access: yesProceedings of the American Mathematical Society, 1983
The following theorem is proved: Let T T be an uncountable set of algebraically independent elements over a field K 0 {K_0} . Then K = K 0 ( T ) K = {K_0}(T) is a Hilbertian ...
Jarden, Moshe, Shelah, Saharon
openaire   +1 more source

Functional visual fields: relationship of visual field areas to self‐reported function [PDF]

open access: yesOphthalmic and Physiological Optics, 2017
AbstractPurposeThe aim of this study is to relate areas of the visual field to functional difficulties to inform the development of a binocular visual field assessment that can reflect the functional consequences of visual field loss.MethodsFifty‐two participants with peripheral visual field loss undertook binocular assessment of visual fields using ...
Subhi, Hikmat   +3 more
openaire   +2 more sources

Regularization of $f(T)$ gravity theories and local Lorentz transformation [PDF]

open access: yes, 2015
We regularized the field equations of $f(T)$ gravity theories such that the effect of Local Lorentz Transformation (LLT), in the case of spherical symmetry, is removed.
Nashed, G. G. L.
core   +3 more sources

Automorphisms of Function Fields [PDF]

open access: yesTransactions of the American Mathematical Society, 1955
1. Let K be an algebraic function field of one variable over the constant field k and let g > 0 be the genus of K. Let 9 be the group of all automorphisms of K that leave the elements of k fixed (and that leave a given place Po of K/k fixed if g = 1). A classical theorem due to Schwartz-Klein-NoetherWeierstrass-Poincar&-Hurwitz when g>1 (and older for ...
openaire   +1 more source

Partition function of massless scalar field in Schwarzschild background [PDF]

open access: yes, 2014
Using thermal value of zeta function instead of zero temperature, the partition function of quantized fields in arbitrary stationary backgrounds was found to be independent of undetermined regularization constant in even-dimension and the long drawn ...
Sanyal, Abhik Kumar
core   +1 more source

Sieving in Function Fields

open access: yesExperimental Mathematics, 1999
We present the first implementation of sieving techniques in the context of function fields. More precisely, we compute in class groups of quadratic congruence function fields by combining the algorithm of Hafner and McCurley with sieving ideas known from factoring.
Flassenberg, Ralf, Paulus, Sachar
openaire   +2 more sources

Fertilization and intercropping reduce Pb accumulation in plants by influencing rhizosphere soil phosphorus forms in soil-plant systems

open access: yesEcotoxicology and Environmental Safety
Fertilization and planting practices in crop systems have become important ways to reduce the uptake of heavy metals in polluted soils. However, the relative effectiveness of different management modes and the underlying mechanisms are not fully ...
Yongjian He   +7 more
doaj   +1 more source

From Green Function to Quantum Field

open access: yes, 2017
A pedagogical introduction to the theory of a gaussian scalar field which shows firstly, how the whole theory is encapsulated in the Wightman function $W(x,y)=\langle\phi(x)\phi(y)\rangle$ regarded abstractly as a two-index tensor on the vector space of (
Sorkin, Rafael D.
core   +1 more source

Quasiclassical Green function in an external field and small-angle scattering [PDF]

open access: yes, 1999
The quasiclassical Green functions of the Dirac and Klein-Gordon equations in the external electric field are obtained with the first correction taken into account.
A. I. Akhiezer   +21 more
core   +2 more sources

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