Disjointly homogeneous Banach lattices and applications

This is a survey on disjointly homogeneous Banach lattices and their applicactions. Several structural properties of this class are analyzed. In addition we show how these spaces provide a natural framework for studying the compactness of powers of operators allowing for a unified treatment of well-known results.Comment: 20 pages, to appear in Proceedings Positivity VII Conference (2013

Tres versiones sobre el conflicto entre Clarisas y Franciscanos ocurrido a mediados del siglo XVII

Santiago, in the Captaincy General of Chile, is the scene of a great religious controversy in the seventeenth century. The Clarisse nuns and the Franciscan prelates face each other in their search for porwer. This article reviews the aforementioned event from the "official" version contained in the stories of Vicuña Mackenna and Vicente Carvallo and the "forgotten" version documented by the nuns themselves. Paying attention to both historical sources allows us to build a more complete narrative, which overcomes that unique history of masculine tone that tends to neutralize the episode. This gender perspective reading seeks to contribute to women history and to prevail over the previous anecdote.Corre el siglo XVII en la capitanía general de Chile y Santiago es el escenario de una gran polémica. Las monjas clarisas y los prelados franciscanos se enfrentan con motivo de la adjudicación de autoridad. El presente artículo revisa el caso a partir de la versión “oficial” contenida en los relatos de Vicuña Mackenna y Vicente Carvallo y de la versión “olvidada” documentada por las propias monjas. La atención a ambas fuentes históricas permite construir un relato más completo, superando aquella historia única de voz masculina que tiende a la neutralización de lo sucedido. La lectura, desde la perspectiva de género, busca aportar a la historia de las mujeres y superar la anécdota de época

La vida en México a través de la fiesta de los toros, 1770

International audienceEn 1769 y 1770 el virrey Croix organizó dos temporadas de toros en la ciudad de México, cuyos productos se aplicaron en obras de beneficio de la ciudad. A partir de documentación conservada en diversos archivos es posible reconstruir esas temporadas (organización, participantes, reglamentación, gastos, productos y aplicación de ellos), así como diversos acontecimientos relacionados con ellas, como la queja del rector de la Universidad por haberse erigido el coso enfrente de la puerta de la escuela. Así, a través de este análisis puede detectarse en buena medida el pulso de la vida citadina de aquel tiempo

A two-level enriched finite element method for a mixed problem

The simplest pair of spaces is made inf-sup stable for the mixed form of the Darcy equation. The key ingredient is to enhance the finite element spaces inside a Petrov-Galerkin framework with functions satisfying element-wise local Darcy problems with right hand sides depending on the residuals over elements and edges. The enriched method is symmetric, locally mass conservative and keeps the degrees of freedom of the original interpolation spaces. First, we assume local enrichments exactly computed and we prove uniqueness and optimal error estimates in natural norms. Then, a low cost two-level finite element method is proposed to effectively obtain enhancing basis functions. The approach lays on a two-scale numerical analysis and shows that well-posedness and optimality is kept, despite the second level numerical approximation. Several numerical experiments validate the theoretical results and compares (favourably in some cases) our results with the classical Raviart-Thomas elemen

La transformación revanchista del centro histórico de Guadalajara, México: gentrificación y otras falsas dicotomías

El presente estudio se ocupa de las recientes transformaciones espaciales que se dan en el centro histórico de Guadalajara, México. A través de un análisis crítico, el artículo revela los drásticos procesos de desplazamiento de pobladores y la reestructuración de las prácticas comerciales en el espacio público; conceptualizándolas como transformaciones espaciales revanchistas derivadas de discursos dicotómicos para su implementación. Haciendo uso de literatura, mapeos y entrevistas recopiladas a través de trabajo de campo, el estudio aborda las estrategias adoptadas por las coaliciones de élite examinando las contestaciones de las resistencias sociales emergentes para así excavar las posibilidades de acomodar la inherente alteridad del urbanismo mexicano más allá de concepciones binarias que sólo favorecen a la creciente mercantilización del espacio urbano.This study addresses the recent spatial transformations in the historic centre of Guadalajara, Mexico. Through critical analysis, the article reveals the drastic processes of population displacement and restructuring of retail practices in the public space; conceptualizing them as revanchist spatial transformations born out of dichotomist discourses for their implementation. Drawing upon literature, mapping and interviews collected through fieldwork, the study addresses the strategies of elite coalitions, examining their contestations vis-à-vis emerging social resistances in order to excavate the possibilities for accommodating the inherent alterity of Mexican urbanism beyond binary conceptions that only favour the increasing commodification of urban space

Implementing Time Amplifier for a Low Power SAR-ADC with Adaptive Conversion Cycle for High Quality Audio Applications in 0.18um TSMC CMOS Technology

This document presents the design of a time amplifier circuit in 0.18 m CMOS process with a supply voltage of 1.8 V. Simulation results performed with typical process parameters, nominal supply voltage, room temperature and an operating frequency of 200 KHz, show a time gain of 200, with an error of less than 7%. The power consumption of the designed circuit is 26 W. The circuit can receive signals with a time difference from 10 ps to 4.7 nS. The layout dimension is 149.985 m x 168.536 m, with an area of 25.3 nm2.ITESO, A. C

Implementing Time Amplifier for a Low Power SAR-ADC with Adaptive Conversion Cycle for High Quality Audio Applications in 0.18um TSMC CMOS Technology

This document presents the design of a time amplifier circuit in 0.18 m CMOS process with a supply voltage of 1.8 V. Simulation results performed with typical process parameters, nominal supply voltage, room temperature and an operating frequency of 200 KHz, show a time gain of 200, with an error of less than 7%. The power consumption of the designed circuit is 26 W. The circuit can receive signals with a time difference from 10 ps to 4.7 nS. The layout dimension is 149.985 m x 168.536 m, with an area of 25.3 nm2.ITESO, A. C