Search results for "c space"
showing 10 items of 552 documents
Iterated function systems and well-posedness
2009
Abstract Fractals and multivalued fractals play an important role in biology, quantum mechanics, computer graphics, dynamical systems, astronomy and astrophysics, geophysics, etc. Especially, there are important consequences of the iterated function (or multifunction) systems in several topics of applied sciences [see for example: El Naschie MS. Iterated function systems and the two-slit experiment of quantum mechanics. Chaos, Solitons & Fractals 1994;4:1965–8; Iovane G. Cantorian spacetime and Hilbert space: Part I-Foundations. Chaos, Solitons & Fractals 2006;28:857–78; Iovane G. Cantorian space-time and Hilbert space: Part II-Relevant consequences. Chaos, Solitons & Fractals 2006;29:1–22;…
Total curvatures of convex hypersurfaces in hyperbolic space
1999
We give sharp upper estimates for the difference circumradius minus inradius and for the angle between the radial vector (respect to the center of an inball) and the normal to the boundary of a compact $h$-convex domain in the hyperpolic space. We apply these estimates to get the limit at the infinity for the quotients Volume/Area and (Total $k$-mean curvature)/Area of a family of $h$-convex domains which expand over the whole space. The theorem for the first quotient gives an extension to arbitrary dimension of a result of Santalo and Yanez for the hyperbolic plane.
THE HOROSPHERICAL GEOMETRY OF SUBMANIFOLDS IN HYPERBOLIC SPACE
2005
Some geometrical properties associated to the contact of submanifolds with hyperhorospheres in hyperbolic -space are studied as an application of the theory of Legendrian singularities.
Isoperimetric inequality from the poisson equation via curvature
2012
In this paper, we establish an isoperimetric inequality in a metric measure space via the Poisson equation. Let (X,d,μ) be a complete, pathwise connected metric space with locally Ahlfors Q-regular measure, where Q > 1, that supports a local L2-Poincare inequality. We show that, for the Poisson equation Δu = g, if the local L∞-norm of the gradient Du can be bounded by the Lorentz norm LQ,1 of g, then we obtain an isoperimetric inequality and a Sobolev inequality in (X,d,μ) with optimal exponents. By assuming a suitable curvature lower bound, we establish such optimal bounds on . © 2011 Wiley Periodicals, Inc.
Identity and Value of Public Space: Multifaceted and Multicultural Points of View
2022
Il tema dello spazio pubblico, della sua definizione e descrizione e della sua trasformazione è certamente estremamente attuale e rilevante. Se l'approccio identitario aiuta a comprendere l'essenza di un luogo, oggi è necessario essere consapevoli che l'identità è qualcosa che può cambiare nel tempo. Basta dare un'occhiata all'Agenda 2030 per lo sviluppo sostenibile, adottata da tutti gli Stati membri delle Nazioni Unite nel 2015, per capire che l'Agenda si concentra su questi temi. Le considerazioni presentate in questo articolo, partendo da una riflessione sullo spazio pubblico, ragionano sui temi dell'identità e del valore. L'argomentazione si basa sulle nuove forme di spazio pubblico e …
An efficient method for clustered multi-metric learning
2019
Abstract Distance metric learning, which aims at finding a distance metric that separates examples of one class from examples of the other classes, is the key to the success of many machine learning tasks. Although there has been an increasing interest in this field, learning a global distance metric is insufficient to obtain satisfactory results when dealing with heterogeneously distributed data. A simple solution to tackle this kind of data is based on kernel embedding methods. However, it quickly becomes computationally intractable as the number of examples increases. In this paper, we propose an efficient method that learns multiple local distance metrics instead of a single global one.…
A Semantic Layer on Semi-structured Data Sources for Intuitive Chatbots
2009
The main limits of chatbot technology are related to the building of their knowledge representation and to their rigid information retrieval and dialogue capabilities, usually based on simple "pattern matching rules". The analysis of distributional properties of words in a texts corpus allows the creation of semantic spaces where represent and compare natural language elements. This space can be interpreted as a "conceptual" space where the axes represent the latent primitive concepts of the analyzed corpus. The presented work aims at exploiting the properties of a data-driven semantic/conceptual space built using semi-structured data sources freely available on the web, like Wikipedia. Thi…
Telpas semantika Teodora Fontānes romānā „Efija Brīsta”
2020
Telpa – viena no svarīgākajām kategorijām cilvēka pasaules uztverē. Ikdienišķā telpas definīcija nav problemātiska, atšķirībā no tās teorētiskās eksplikācijas jeb paskaidrojuma. Līdz par 20. gadsimtam telpas definīcija nebija pietiekami izpētīta, tomēr ar telpiskā pagrieziena (Spatial Turn) sākumu situācija ir mainījusies – telpa kļuva par kultūras vērtību, kas vēlāk ļāva paplašināt tās pētījuma horizontus. Pēdējo gadsimtu gaitā telpas izpētei tika veltīti daudzi darbi, kas pierāda tās aktualitāti līdz pat šodienai. Šis maģistra darbs nodarbojas ar literārās telpas semantiku jeb tās nozīmi un izpratni vācu rakstnieka Teodora Fontānes romānā Efija Brīsta. Šis romāns ir raksturīgs piemērs, ku…
Virtual Space and the Contention over Representations of the City
2015
The European Capital of Culture (ECOC) is one of the longest running cultural initiatives of the European Union (EU). The EU annually designates one or more cities with this much-competed-for city brand. In various cities the ECOC designation has caused tensions and disagreements over the decision-making process, funding of cultural events, and the use of urban space. These disputes have also generated urban activism that uses various platforms to contest ECOC policies: public discussions in the local media, Internet sites and blogs, as well as alternative events and activities organised by the citizens themselves. This chapter investigates the conflict related to the ECOC designation of Tu…
Politics of Fear and Racialized Rape: Intersectional Reading of the Kempele Rape Case
2018
Much of the anxiety, hatred, and fear felt toward asylum seekers as racialized others that had been aroused and incited during the summer and autumn of “the refugee crisis” of 2015 crystallized in the Kempele rape case. The case refers to the incident in which accusations were broadcast in the Finnish media that a suspected rape of a young girl by two refugees based at a newly established immigration detention center had occurred in the small town of Kempele in Northern Ostrobothnia on November 2015. It is an illuminating example of how race and ethnicity intertwine with gender in contemporary discussions that take place in both the traditional and social media. In this chapter I analyze th…