Results 81 to 90 of about 188,382 (179)
Rational points on even‐dimensional Fermat cubics
Transactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.Abstract We show that even‐dimensional Fermat cubic hypersurfaces are rational over any field of characteristic not equal to three, by constructing explicit rational parameterizations with polynomials of low degree. As a byproduct of our rationality constructions, we obtain estimates for the number of their rational points over a number field and ...
Alex Massarenti
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, 2001 En el marco de la celebración y con el ánimo de que los estudiantes y profesores de las nuevas generaciones conocieran algunos de los egresados de la carrera de matemáticas, se realizó un ciclo de conferencias los días miércoles a las seis de la tarde en
Boletín de, Matemáticas
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Context‐free graphs and their transition groups
Transactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.Abstract Starting from context‐free inverse graphs, we introduce a new class of groups and study their structural properties. We establish closure properties, show that their coword problems are context‐free, analyze torsion elements, and realize them as subgroups of the asynchronous rational group.
Daniele D'Angeli +3 more
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, 2001 Hasta el año de 1946 en que fue fundada la Facultad de Ciencias de la Universidad Nacional, el estudio de las Matemáticas en Colombia se limitaba al que de ellas se hacía en las facultades de Ingeniería y al que los aficionados a esta rama de la ciencia ...
Boletín de, Matemáticas
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International Transactions in Operational Research, Volume 33, Issue 6, Page 3714-3743, November 2026.Abstract This paper investigates an extension of the vehicle routing problem in which, in addition to minimizing the distance traveled, the sequencing of customer visits is subject to precedence constraints that impose visiting priorities among customers.
Eduardo dos Santos Teixeira +1 more
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Segundo coloquio distrital de matemáticas y estadística [PDF]
, 1985 Se celebró en conmemoración de los 30 años de la Universidad Pedagógica Nacional, organizado por la Universidad Nacional, la Universidad Distrital Francisco José de Caldas, la DIE-CEP y la Universidad Pedagógica ...
Boletín de, Matemáticas
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Exploring the Genetic Diversity of Candida albicans in Animal Hosts: A One Health Perspective
Zoonoses and Public Health, Volume 73, Issue 7, Page 632-643, November 2026.ABSTRACT Introduction Candida albicans is an important priority fungal pathogen that commonly colonizes humans and a wide range of animal hosts, although its population structure in wildlife remains poorly explored. Methods In this study, 41 C. albicans isolates obtained from Italian wild animals (European hedgehogs, wolves, foxes, badgers, roe deer ...
Lucilla Lo Re +9 more
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Good Real Perturbations of Simple Corank One Map Germs From R3$\mathbb {R}^3$ to R3$\mathbb {R}^3$
Mathematische Nachrichten, Volume 299, Issue 10, Page 2805-2835, October 2026.ABSTRACT The existence of good real perturbations of map germs is one of the most interesting open questions in singularity theory. In this paper, we investigate this question for all simple corank one map germs from R3$\mathbb {R}^3$ to R3$\mathbb {R}^3$, we give a complete description of those that admit a good real perturbation.
A. J. Miranda, M. J. Saia, T. O. Souza
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Un vaso celtibérico con problema
Cuadernos de Arqueología de la Universidad de Navarra, 2010 El artículo describe una vasija cerámica encontrada en el alfar de los Pedregales (Clunia, Hispania Citerior) hacia 1930 y que muestra una infrecuente decoración: una figura geométrica rotulada con cifras y el enunciado de un problema.
Joaquín L. Gómez-Pantoja
doaj
Kernel Bounds for Parabolic Operators Having First‐Order Degeneracy at the Boundary
Mathematische Nachrichten, Volume 299, Issue 10, Page 2894-2917, October 2026.ABSTRACT We study kernel estimates for parabolic problems governed by singular elliptic operators ∑i,j=1N+1qijDij+cDyy,cγ+1>0,γ=qN+1,N+1,$$\begin{equation*} \sum _{i,j=1}^{N+1}q_{ij}D_{ij}+c\frac{D_y}{y},\qquad \frac{c}{\gamma }+1>0, \quad \gamma =q_{N+1,N+1}, \end{equation*}$$in the half‐space R+N+1={(x,y):x∈RN,y>0}$\mathbb {R}^{N+1}_+=\lbrace (x,y ...
L. Negro, C. Spina
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