Results 1 to 10 of about 3,259,349 (186)

A string theory which isn’t about strings [PDF]

Journal of High Energy Physics, 2017
Quantization of closed string proceeds with a suitable choice of worldsheet vacuum. A priori, the vacuum may be chosen independently for left-moving and right-moving sectors.
Kanghoon Lee, Soo-Jong Rey, J. A. Rosabal   +2 more
doaj   +4 more sources

On some differences between number fields and function fields

, 2016
The analogy between the arithmetic of varieties over number fields and the arithmetic of varieties over function fields is a leading theme in arithmetic geometry. This analogy is very powerful but there are some gaps.
Gasbarri, Carlo
core   +3 more sources

Some Properties of Euler’s Function and of the Function τ and Their Generalizations in Algebraic Number Fields

Mathematics, 2021
In this paper, we find some inequalities which involve Euler’s function, extended Euler’s function, the function τ, and the generalized function τ in algebraic number fields.
Nicuşor Minculete, Diana Savin
doaj   +1 more source

Finiteness theorems for algebraic tori over function fields

Comptes Rendus. Mathématique, 2021
We present a number of finiteness results for algebraic tori (and, more generally, for algebraic groups with toric connected component) over two classes of fields: finitely generated fields and function fields of algebraic varieties over fields of type ...
Rapinchuk, Andrei S., Rapinchuk, Igor A.
doaj   +1 more source

Wind turbine load validation in wakes using wind field reconstruction techniques and nacelle lidar wind retrievals [PDF]

Wind Energy Science, 2021
This study proposes two methodologies for improving the accuracy of wind turbine load assessment under wake conditions by combining nacelle-mounted lidar measurements with wake wind field reconstruction techniques.
D. Conti, V. Pettas, N. Dimitrov, A. Peña   +3 more
doaj   +1 more source

Some Properties of Extended Euler’s Function and Extended Dedekind’s Function

Mathematics, 2020
In this paper, we find some properties of Euler’s function and Dedekind’s function. We also generalize these results, from an algebraic point of view, for extended Euler’s function and extended Dedekind’s function, in algebraic number fields ...
Nicuşor Minculete, Diana Savin
doaj   +1 more source

Reducing pesticides without organic certification? Potentials and limits of an intermediate form of agricultural production

Cogent Food & Agriculture, 2023
A growing number of farmers’ cooperatives cultivate crops without chemical pesticides, but also without organic certification. How does this intermediate form of agriculture between conventional and organic production function?
Marcus A. Koch, Jale Tosun, Laura Kellermann, Charlene Marek, Markus Kiefer, Mike Thiv   +5 more
doaj   +1 more source

Class numbers of cyclotomic function fields [PDF]

Mathematics of Computation, 1986
Using results of Galovich and Rosen the plus and minus factors for the class number of the cyclotomic function field associated with irreducibles of degree three and four over the field with three elements are computed. As a consequence it is shown that the analogue to a result of Kummer on the p-divisibility of these factors is false.
Ireland, K. F., Small, R. D.
openaire   +1 more source

PARAMETRIC GEOMETRY OF NUMBERS IN FUNCTION FIELDS [PDF]

Mathematika, 2017
20 pages, the proof of a central lemma is simplified and the main construction is shown to be universal.
Roy, Damien, Waldschmidt, Michel
openaire   +2 more sources

Free W*-Dynamical Systems From p-Adic Number Fields and the Euler Totient Function

Mathematics, 2015
In this paper, we study relations between free probability on crossed product W * -algebras with a von Neumann algebra over p-adic number fields
Ilwoo Cho, Palle E. T. Jorgensen
doaj   +1 more source