Results 21 to 30 of about 635,864 (319)

Multifractality of light in photonic arrays based on algebraic number theory

open access: yesCommunications Physics, 2020
Many natural patterns and shapes, such as meandering coastlines, clouds, or turbulent flows, exhibit a characteristic complexity that is mathematically described by fractal geometry.
F. Sgrignuoli   +5 more
semanticscholar   +1 more source

Q_l-cohomology projective planes and singular Enriques surfaces in characteristic two [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2019
We classify singular Enriques surfaces in characteristic two supporting a rank nine configuration of smooth rational curves. They come in one-dimensional families defined over the prime field, paralleling the situation in other characteristics, but ...
Matthias Schütt
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

Transcendental Number Theory

open access: yes, 2022
First published in 1975, this classic book gives a systematic account of transcendental number theory, that is, the theory of those numbers that cannot be expressed as the roots of algebraic equations having rational coefficients.
Alan Baker, D. Masser
semanticscholar   +1 more source

About the Entropy of a Natural Number and a Type of the Entropy of an Ideal

open access: yesEntropy, 2023
In this article, we find some properties of certain types of entropies of a natural number. We are studying a way of measuring the “disorder” of the divisors of a natural number. We compare two of the entropies H and H¯ defined for a natural number.
Nicuşor Minculete, Diana Savin
doaj   +1 more source

Investigating Students’ Understanding of Complex Number and Its Relation to Algebraic Group Using and APOS Theory

open access: yesJournal of Medives: Journal of Mathematics Education IKIP Veteran Semarang, 2023
This study focused on students’ inability to correctly use psychometric tests applied for complex numbers in the context of generating an Algebraic abelian group (closure, commutative, associatively, inverse, and identity).
Idowu Oluwaseun Longe   +1 more
doaj   +1 more source

Number Theory

open access: yesAn Introduction to Probabilistic Number Theory, 2020
: Let K be a number field. Then we completely classify the preperiodic portraits of the maps f ( x ) = x d + c where c ∈ K is an algebraic integer and d ≫ K 0 . More precisely, we prove that, up to accounting for the natural action of d th roots of unity
Don Redmond
semanticscholar   +1 more source

Topological Indices of Graphs from Vector Spaces

open access: yesMathematics, 2023
Topological indices are numbers that are applied to a graph and can be used to describe specific graph properties through algebraic structures. Algebraic graph theory is a helpful tool in a range of chemistry domains.
Krishnamoorthy Mageshwaran   +3 more
doaj   +1 more source

Sur l'existence du sch\'ema en groupes fondametal [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2020
Let $S$ be a Dedekind scheme, $X$ a connected $S$-scheme locally of finite type and $x\in X(S)$ a section. The aim of the present paper is to establish the existence of the fundamental group scheme of $X$, when $X$ has reduced fibers or when $X$ is ...
Marco Antei   +2 more
doaj   +1 more source

Variation of stable birational types in positive characteristic [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2020
Let k be an uncountable algebraically closed field and let Y be a smooth projective k-variety which does not admit a decomposition of the diagonal. We prove that Y is not stably birational to a very general hypersurface of any given degree and dimension.
Stefan Schreieder
doaj   +1 more source

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