Results 11 to 20 of about 10,572,154 (285)

Real quadratic number fields with metacyclic Hilbert $2$-class field tower [PDF]

open access: yesMathematica Bohemica, 2019
We begin by giving a criterion for a number field $K$ with 2-class group of rank 2 to have a metacyclic Hilbert 2-class field tower, and then we will determine all real quadratic number fields $\mathbb Q(\sqrt d)$ that have a metacyclic nonabelian ...
Said Essahel, Ahmed Dakkak, Ali Mouhib
doaj   +1 more source

Number Fields [PDF]

open access: yes, 2023
Number Fields is a textbook for algebraic number theory. It grew out of lecture notes of master courses taught by the author at Radboud University, the Netherlands, over a period of more than four decades. It is self-contained in the sense that it uses only mathematics of a bachelor level, including some Galois theory.
openaire   +1 more source

Spatial priority areas for individual and multiple hydrological ecosystem services with economic costs across teshio watershed, northernmost of Japan

open access: yesGlobal Ecology and Conservation, 2019
Spatial priority areas for individual and multiple hydrological ecosystem services with economic costs across watershed through systematic conservation model represent a significant step toward cost-effective, transparent allocation of resources for ...
Min Fan, Wei Ou, Li Chen
doaj   +1 more source

Natural convection in an enclosure with a pair of cylinders under magnetic field

open access: yesCase Studies in Thermal Engineering, 2022
This two-dimensional numerical study investigates magnetohydrodynamic unsteady natural convection heat transfer inside an enclosure with two heated circular cylinders within it in the horizontal mid-plane. The fluid is incompressible and Newtonian.
Gopal Chandra Pal   +4 more
doaj   +1 more source

The number of reducible space curves over a finite field [PDF]

open access: yes, 2012
"Most" hypersurfaces in projective space are irreducible, and rather precise estimates are known for the probability that a random hypersurface over a finite field is reducible.
Cesaratto, Eda   +2 more
core   +3 more sources

Lattice Sieving in Three Dimensions for Discrete Log in Medium Characteristic

open access: yesJournal of Mathematical Cryptology, 2020
Lattice sieving in two dimensions has proven to be an indispensable practical aid in integer factorization and discrete log computations involving the number field sieve. The main contribution of this article is to show that a different method of lattice
McGuire Gary, Robinson Oisín
doaj   +1 more source

BETTI NUMBERS OF GAUSSIAN FIELDS [PDF]

open access: yesJournal of The Korean Astronomical Society, 2013
We present the relation between the genus in cosmology and the Betti numbers for excursion sets of three- and two-dimensional smooth Gaussian random fields, and numerically investigate the Betti numbers as a function of threshold level. Betti numbers are topological invariants of figures that can be used to distinguish topological spaces.
Park, Changbom   +8 more
openaire   +3 more sources

Prime Spectrum of the Ring of Adeles of a Number Field

open access: yesMathematics, 2022
Much is known about the adele ring of an algebraic number field from the perspective of harmonic analysis and class field theory. However, its ring-theoretical aspects are often ignored.
Álvaro Serrano Holgado
doaj   +1 more source

Finite Temperature Induced Fermion Number for Quarks in a Chiral Field [PDF]

open access: yes, 2002
We compute the finite temperature correction to the induced fermion number for fermions coupled to a static SU(2) chiral background, using the derivative expansion technique.
Dunne, Gerald V., Rao, Kumar
core   +2 more sources

Effects of variations in magnetic Reynolds number on magnetic field distribution in electrically conducting fluid under magnetohydrodynamic natural convection [PDF]

open access: yesJournal of Heat and Mass Transfer Research, 2017
In this study the effect of magnetic Reynolds number variation on magnetic distribution of natural convection heat transfer in an enclosure is numerically investigated.
Mohsen Pirmohammadi
doaj   +1 more source

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