Results 1 to 10 of about 1,965 (245)

Bicyclic commutator quotients with one non-elementary component [PDF]

open access: yesMathematica Bohemica, 2023
For any number field $K$ with non-elementary $3$-class group ${\rm Cl}_3(K)\simeq C_{3^e}\times C_3$, $e\ge2$, the punctured capitulation type $\varkappa(K)$ of $K$ in its unramified cyclic cubic extensions $L_i$, $1\le i\le4$, is an orbit under the ...
Daniel C. Mayer
doaj   +1 more source

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 torsors over strongly $F$-regular singularities [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2022
We investigate finite torsors over big opens of spectra of strongly $F$-regular germs that do not extend to torsors over the whole spectrum. Let $(R,\mathfrak{m},k)$ be a strongly $F$-regular $k$-germ where $k$ is an algebraically closed field of ...
Javier Carvajal-Rojas
doaj   +1 more source

Projective varieties have countably many real forms

open access: yesComptes Rendus. Mathématique, 2023
In this note, we check that a complex projective algebraic variety has (at most) countably many real forms. We more generally prove it when the field of reals is replaced with a field that has only countably many finite extensions up to isomorphism.
Labinet, Timothée L.
doaj   +1 more source

Underlying SUSY in a generalized Jaynes–Cummings model

open access: yesScientific Reports, 2021
We present a general qubit-boson interaction Hamiltonian that describes the Jaynes–Cummings model and its extensions as a single Hamiltonian class. Our model includes non-linear processes for both the free qubit and boson field as well as non-linear ...
F. H. Maldonado-Villamizar   +3 more
doaj   +1 more source

Piecewise hereditary algebras under field extensions [PDF]

open access: yesCzechoslovak Mathematical Journal, 2021
Let $A$ be a finite-dimensional $k$-algebra and $K/k$ be a finite separable field extension. We prove that $A$ is derived equivalent to a hereditary algebra if and only if so is $A\otimes_kK$.
openaire   +2 more sources

On the Computing of Symbolic 2-Plithogenic And 3-Plithogenic Complex Roots of Unity [PDF]

open access: yesNeutrosophic Sets and Systems, 2023
The concept of unity roots plays a central role in the theory of field extensions and polynomials roots' computing. The objective of this paper is to find the algebraic formula for computing the symbolic 2-plithogenic and 3-plithogenic complex roots of ...
Nabil Khuder Salman
doaj  

Schrödinger Symmetry in Gravitational Mini-Superspaces

open access: yesUniverse, 2023
We prove that the simplest gravitational symmetry-reduced models describing cosmology and black hole mechanics are invariant under the Schrödinger group.
Jibril Ben Achour   +3 more
doaj   +1 more source

On the Representation of the Lattices of the Algebraic Sets of the Universal Algebras

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2019
The concept of an algebraic set is a basic concept of the classical algebraic geometry over fields. This concept, along with the concept of an algebraic lattice of algebraic sets is the basic concept of so-called algebraic geometry of universal algebras.
A.G. Pinus
doaj   +1 more source

Characterizations of Group Theory under Q-Neutrosophic Soft Environment [PDF]

open access: yesNeutrosophic Sets and Systems, 2019
Neutrosophic set theory was initiated as a method to handle indeterminate uncertain data. It is identified via three independent memberships represent truth T, indeterminate I and falsity F membership degrees of an element.
Majdoleen Abu Qamar, Nasruddin Hassan
doaj   +1 more source

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