Results 41 to 50 of about 4,220 (119)
On some properties of the asymptotic Samuel function
Mathematische Nachrichten, Volume 298, Issue 7, Page 2401-2423, July 2025.Abstract The asymptotic Samuel function generalizes to arbitrary rings the usual order function of a regular local ring. Here, we explore some natural properties in the context of excellent, equidimensional rings containing a field. In addition, we establish some results regarding the Samuel slope of a local ring.
A. Bravo, S. Encinas, J. Guillán‐Rial
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On totally umbilical and minimal surfaces of the Lorentzian Heisenberg groups
Mathematische Nachrichten, Volume 298, Issue 6, Page 1922-1942, June 2025.Abstract This paper has manifold purposes. We first introduce a description of the Gauss map for submanifolds (both spacelike and timelike) of a Lorentzian ambient space and relate the conformality of the Gauss map of a surface to total umbilicity and minimality.
Giovanni Calvaruso +2 more
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EGA, 2013 A number of peculiar thorus vaults were built in southern Spain during the 16th century. One of these vaults, over the chapel of the Virgin of the Alcázar in the church of San Patricio in Lorca, shows at first sight an irregular rib layout; this fact ...
José Calvo López +2 more
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EGA, 2020 El espacio arquitectónico al que da lugar el uso de la geometría esférica, posee una destacada carga simbólica. Prueba de ello es que a lo largo de la historia ha sido utilizada en las más notables composiciones arquitectónicas.
Juan M. Salmerón Nuñez +1 more
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Mechanical Hamiltonization of Unreduced ϕ$\phi$‐Simple Chaplygin Systems
Studies in Applied Mathematics, Volume 154, Issue 5, May 2025.ABSTRACT In this paper, we prove that the trajectories of unreduced ϕ$\phi$‐simple Chaplygin kinetic systems are reparameterizations of horizontal geodesics with respect to a modified Riemannian metric. Furthermore, our proof is constructive and these Riemannian metrics, which are not unique, are obtained explicitly in interesting examples.
Alexandre Anahory Simoes +2 more
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Zero‐curvature subconformal structures and dispersionless integrability in dimension five
Journal of the London Mathematical Society, Volume 110, Issue 6, December 2024.Abstract We extend the recent paradigm “Integrability via Geometry” from dimensions 3 and 4 to higher dimensions, relating dispersionless integrability of partial differential equations to curvature constraints of the background geometry. We observe that in higher dimensions on any solution manifold, the symbol defines a vector distribution equipped ...
Boris Kruglikov, Omid Makhmali
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Dibujando la realidad usando las Isometrías en el plano bidimensional
Revista Científica, 2014 El proyecto de innovación pedagógica se centra en la enseñanza-aprendizaje de las isometrías en el plano bidimensional, en los grados sexto y séptimo; se enfatiza en su utilidad para el desarrollo del arte gráfico, específicamente las teselaciones.
Geral Stivens Galán García +1 more
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Boundary Strichartz estimates and pointwise convergence for orthonormal systems
Transactions of the London Mathematical Society, Volume 11, Issue 1, December 2024.Abstract We consider maximal estimates associated with fermionic systems. Firstly, we establish maximal estimates with respect to the spatial variable. These estimates are certain boundary cases of the many‐body Strichartz estimates pioneered by Frank, Lewin, Lieb and Seiringer.
Neal Bez +2 more
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Looking up music in two ‘encyclopedias’ printed in 1501
Renaissance Studies, Volume 38, Issue 4, Page 563-594, September 2024.Abstract A modern user of a printed encyclopedia expects to find concise entries on a wide range of subjects organised alphabetically for ease of reference. In the fifteenth and sixteenth centuries a number of scholarly texts of a particularly long and wide‐ranging character were essentially ‘encyclopedized’ through the provision of compendious subject
Tim Shephard, Charlotte Hancock
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Transformation geometry. Leonardo da Vinci's urban proposal for Milan
EGA, 2016 In 1493, Leonardo da Vinci proposed an ambitious plan for the transformation of Milan, consisting of the construction of ten new cities in order to solve overcrowding and insalubrity problems at the Lombard capital.
Enrique Fernandez-Vivancos González
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