Simple Coalitional Strategy Profiles in Repeated Games

This paper is a version of the discussion paper titled "Simple coalitional strategy profiles"

Fixed and Best Proximity Points of Cyclic Jointly Accretive and Contractive Self-Mappings

p(>= 2)-cyclic and contractive self-mappings on a set of subsets of a metric space which are simultaneously accretive on the whole metric space are investigated. The joint fulfilment of the p-cyclic contractiveness and accretive properties is formulated as well as potential relationships with cyclic self-mappings in order to be Kannan self-mappings. The existence and uniqueness of best proximity points and fixed points is also investigated as well as some related properties of composed self-mappings from the union of any two adjacent subsets, belonging to the initial set of subsets, to themselves.

Stability and Limit Oscillations of a Control Event-Based Sampling Criterion

This paper investigates the presence of limit oscillations in an adaptive sampling system. The basic sampling criterion operates in the sense that each next sampling occurs when the absolute difference of the signal amplitude with respect to its currently sampled signal equalizes a prescribed threshold amplitude. The sampling criterion is extended involving a prescribed set of amplitudes. The limit oscillations might be interpreted through the equivalence of the adaptive sampling and hold device with a nonlinear one consisting of a relay with multiple hysteresis whose parameterization is, in general, dependent on the initial conditions of the dynamic system. The performed study is performed on the time domain.

Fixed Points of Closed and Compact Composite Sequences of Operators and Projectors in a Class of Banach Spaces

Some results on fixed points related to the contractive compositions of bounded operators in a class of complete metric spaces which can be also considered as Banach's spaces are discussed through the paper. The class of composite operators under study can include, in particular, sequences of projection operators under, in general, oblique projective operators. In this paper we are concerned with composite operators which include sequences of pairs of contractive operators involving, in general, oblique projection operators. The results are generalized to sequences of, in general, nonconstant bounded closed operators which can have bounded, closed, and compact limit operators, such that the relevant composite sequences are also compact operators. It is proven that in both cases, Banach contraction principle guarantees the existence of unique fixed points under contractive conditions.

Some Results on Fixed and Best Proximity Points of Precyclic Self-Mappings

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Evaluación del proyecto de Madrid 2012 bajo un enfoque de mercado. Una exploración de posibilidades y mejoras

[ES] Desde que el 24 de abril de 1966 Madrid perdiera frente a Munich la votación para ser elegida como ciudad organizadora de los Juegos Olímpicos de 1972, la ciudad nunca había estado tan cerca de la organización de unas Olimpiadas.

Ahalmen espaziala hezkuntza matematikoan

[EUS] Matematikaren irakaskuntzaren helburuenetako bat hezkuntza maila guztietan ikasleen ahalmen intelektualen garapena da. Ahalmen espazialaren trataera eskolan urria izan da, bereziki zenbakizko ahalmenak edota arrazonamenduzko ahalmenak izan duten trataerarekin konparatzen badugu. Hezkuntza Matematikoan egindako berrikusketek ahalmen espazialaren azterketaren garrantzia azpimarratzen dute nahiz eta erreferentzi marko baten ezak sakabanatzen eta zailtzen dituen emaitzen lorpena, behin betikoak izateko erreplikagarriak izan behar dutela jakinik. Ondoren proposatzen den ikerketa-lerroak ahalmen espaziala alderdi hirukoitz batetik abiaturik aztertu nahi du: egitura, garapena eta hobetze-proposamenak kontutan harturik. Hiru arlo horietan proposaturiko ereduek bermatuko dute diagnostiko zuzen bat, ikasleen ahalmen espaziala hobetuko duena.

De Leioa hacía Aracaju: sembrando experiencias transformadoras y construyendo ciudadanía

[ES] Este trabajo de intervención, construido desde la perspectiva sociocrítica, presenta una intervención socioeducativa desarrollada en la ciudad de Aracaju, Brasil. La citada intervención, en, con y para un grupo de personas con escasos recursos económicos, sobre todo mujeres, se basa en la cooperación al desarrollo entendido como instrumento capaz de generar experiencias que posibilitan hacer frente a las consecuencias nefastas de los modelos económico, cultural, político y social dominantes en la actualidad. Entre los impactos de este trabajo podemos citar la fundación de una asociación de vecinas y vecinos, la creación de un perfil de dicha asociación en Facebook y la puesta en marcha de acciones comunitarias como un bingo solidario, talleres de empoderamiento de mujeres y un bazar solidario. Los resultados de este trabajo permiten afirmar que urge el fomento de estrategias, medidas y acciones que favorezcan el paso de un modelo asistencial a un modelo de autonomía.