Buscador de Tesis y publicaciones académicas

Artículo 2027 Acceso abierto Revisado por pares

Cyclotomic factors and LRS-degeneracy

John Abbott · Nico Mexis

We present three new, practical algorithms for polynomials in $\mathbb{Z}[x]$: one to test if a polynomial is cyclotomic, one to determine which cyclotomic polynomials are factors, and one to determine whether the given polynomial is LRS-degenerate. A polynomial is "LRS-degenerate" iff it has two distinct roots $α, β$...

Commutative Algebra Number Theory FOS: Mathematics Number Theory (math.NT)

• Elsevier BV
• English
• DOI: 10.1016/j.jalgebra.2026.07.001

Leer el documento

Artículo 2027 Acceso abierto Revisado por pares

Group-extensive embeddings into Fraïssé structures and stationary weak independence relations

Kwiatkowska, Aleksandra · Sullivan, Rob · Winkel, Jeroen

Let $M$ be a Fraïssé structure (a countably infinite ultrahomogeneous structure). We call an embedding $f : A \to M$ group-extensive if each automorphism of its image extends to an automorphism of $M$, where the extension map respects composition. We say that $M$ has group-extensible $ω$-age if each substructure admits...

Logic Combinatorics 03C15, 20B27, 03C50, 18A22 FOS: Mathematics

• Elsevier BV
• English
• DOI: 10.1016/j.jalgebra.2026.07.015

Leer el documento

Artículo 2027 Acceso abierto Revisado por pares

Direct current thermo-mechanical testing: principles, uncertainty hierarchy, and its role in advanced materials characterisation

Abdalrhaman Koko · Sodiq Abiodun Kareem · Olajesu Favor Olanrewaju · Rachael Williams · y 3 más

Direct current thermo-mechanical testing (DC-TMT), based on resistive Joule heating, enables rapid heating and cooling, steep thermal gradients and simultaneous mechanical loading, making it a powerful tool for probing deformation, phase transformations, oxidation-assisted damage and creep under conditions inaccessible...

Materials Science Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences

• Elsevier BV
• English
• DOI: 10.1016/j.pmatsci.2026.101823

Leer el documento

Artículo 2027 Acceso abierto Revisado por pares

Geospatial Analysis of HIV Prevalence and Cervical Cancer Screening Coverage in Sub-Saharan Africa: Opportunities and Gaps for Integrated Care

Denis, Okova · Akim Tafadzwa, Lukwa · Lucy, Cunnama

Cervical cancer remains a leading cause of cancer mortality among women in sub-Saharan Africa, with HIV infection amplifying risk through immunosuppression. This geospatial analysis examines the alignment between HIV prevalence and cervical cancer screening (CCS) coverage in 4 high-burden countries (South Africa, Kenya...

• Elsevier BV
• English
• DOI: 10.1016/j.vhri.2026.101670

Leer el documento

Artículo 2027 Acceso abierto Revisado por pares

Learning a generalized model for substation level voltage estimation in distribution networks

Muhy Eddin Za’ter · Bri-Mathias Hodge

Accurate voltage estimation in distribution networks is critical for real-time monitoring and increasing the reliability of the grid. As DER penetration and distribution level voltage variability increase, robust distribution system state estimation (DSSE) has become more essential to maintain safe and efficient operat...

Machine Learning FOS: Computer and information sciences Artificial Intelligence (cs.AI) Artificial Intelligence

• Elsevier BV
• English
• DOI: 10.1016/j.epsr.2026.113778

Leer el documento

Artículo 2027 Acceso abierto Revisado por pares

Singular intersections in families of abelian varieties

Nicola Ottolini

Let $S$ be a smooth irreducible curve defined over $\overline{\mathbb{Q}}$, let $\mathcal{A}$ be an abelian scheme over $S$ and $\mathcal{C}$ a curve inside $\mathcal{A}$, both defined over $\overline{\mathbb{Q}}$. In this paper we prove that the set of points in which $\mathcal{C}$ intersects proper flat subgroup sche...

11G10, 11G05, 11G50, 14C17 Number Theory FOS: Mathematics Number Theory (math.NT)

• Elsevier BV
• English
• DOI: 10.1016/j.jnt.2026.07.002

Leer el documento

Artículo 2027 Acceso abierto Revisado por pares

p-twisted Selmer near-companion curves

Minseok Kim

Let $E_1$ and $E_2$ be elliptic curves over a number field $K$. In \cite{scc}, Mazur and Rubin define the concept of $n$-Selmer near-companions and conjecture that if $E_1$ and $E_2$ are $n$-Selmer near-companions over $K$, then $E_1[n]$ is $G_K$-isomorphic to $E_2[n]$. Yu proves the conjecture on $n$-Selmer near-compa...

Number Theory FOS: Mathematics Number Theory (math.NT) mathematics

• Elsevier BV
• English
• DOI: 10.1016/j.jnt.2026.06.003

Leer el documento

Artículo 2027 Acceso abierto Revisado por pares

Cerebral Malaria in Childhood Is Associated With Decreased Long-Term Health-Related Quality of Life

Perez N, Ochanda · Paul, Bangirana · Carol, Kamya · Arild, Aakvik · y 4 más

Severe malaria in childhood causes long-term cognitive and behavioral problems; however, its impact on health-related quality of life (HRQoL) remains understudied. We assessed HRQoL 4 to 20 years after cerebral malaria (CM), severe malarial anemia (SMA), or other severe malaria (OSM) in Uganda.Participants from 3 longi...

medical and health sciences clinical medicine

• Elsevier BV
• English
• DOI: 10.1016/j.vhri.2026.101677

Leer el documento

Artículo 2027 Acceso abierto Revisado por pares

BMP9-loaded collagen scaffold promotes periodontal regeneration via microenvironmental modulation of PDLSCs and macrophages

Dong Woo Lee · Hee-seung Han · Yu-Bin Kim · Sanghui Seok · y 12 más

Periodontal tissue regeneration requires coordinated cellular responses among multiple cell types, supporting matrix components, and signaling proteins, including bone morphogenetic proteins (BMPs). Despite extensive studies on BMP2, the regenerative role of BMP9 and its interplay with BMP2 in shaping bone and cementum...

basic medicine medical and health sciences

• Elsevier BV
• English
• DOI: 10.1016/j.biomaterials.2026.124591

Leer el documento

Artículo 2027 Acceso abierto Revisado por pares

Unlocking the secrets of Black Pepper: A multispectral and isotopic analytical approach to discriminate Black Pepper (Piper nigrum L.) geographical origin

Baskali-Bouregaa, Nadia · de Gayardon de Fenoyl, Bruno · Bernard, Chloé · Garnier, Clarisse · y 3 más

Black pepper (Piper nigrum L.) is one of the most widely traded spice. The majority of production shared mainly between Vietnam, Brazil, India, and Cambodia. The consumers demand increased food safety and highly reliable traceability of food products.Near infrared spectra are measured from 98 peppers with 14 distinct g...

[CHIM] Chemical Sciences [STAT] Statistics [stat]

• Elsevier BV
• English
• DOI: 10.1016/j.foodcont.2026.112579

Leer el documento