Search results for "universal"
showing 10 items of 678 documents
On Sets of Words of Rank Two
2019
Given a (finite or infinite) subset X of the free monoid A∗ over a finite alphabet A, the rank of X is the minimal cardinality of a set F such that X⊆ F∗. A submonoid M generated by k elements of A∗ is k-maximal if there does not exist another submonoid generated by at most k words containing M. We call a set X⊆ A∗ primitive if it is the basis of a |X|-maximal submonoid. This extends the notion of primitive word: indeed, w is a primitive set if and only if w is a primitive word. By definition, for any set X, there exists a primitive set Y such that X⊆ Y∗. The set Y is therefore called a primitive root of X. As a main result, we prove that if a set has rank 2, then it has a unique primitive …
Completion of the universal I-Love-Q relations in compact stars including the mass
2017
In a recent paper we applied a rigorous perturbed matching framework to show the amendment of the mass of rotating stars in Hartle's model. Here, we apply this framework to the tidal problem in binary systems. Our approach fully accounts for the correction to the Love numbers needed to obtain the universal $I$-Love-$Q$ relations. We compute the corrected mass vs radius configurations of rotating quark stars, revisiting a classical paper on the subject. These corrections allow us to find a universal relation involving the second-order contribution to the mass $\delta M$. We thus complete the set of universal relations for the tidal problem in binary systems, involving four perturbation param…
Algebra Structures on Hom(C,L)
1999
info:eu-repo/semantics/published
Theory of ground state factorization in quantum cooperative systems.
2008
We introduce a general analytic approach to the study of factorization points and factorized ground states in quantum cooperative systems. The method allows to determine rigorously existence, location, and exact form of separable ground states in a large variety of, generally non-exactly solvable, spin models belonging to different universality classes. The theory applies to translationally invariant systems, irrespective of spatial dimensionality, and for spin-spin interactions of arbitrary range.
SOV approach for integrable quantum models associated to general representations on spin-1/2 chains of the 8-vertex reflection algebra
2013
The analysis of the transfer matrices associated to the most general representations of the 8-vertex reflection algebra on spin-1/2 chains is here implemented by introducing a quantum separation of variables (SOV) method which generalizes to these integrable quantum models the method first introduced by Sklyanin. More in detail, for the representations reproducing in their homogeneous limits the open XYZ spin-1/2 quantum chains with the most general integrable boundary conditions, we explicitly construct representations of the 8-vertex reflection algebras for which the transfer matrix spectral problem is separated. Then, in these SOV representations we get the complete characterization of t…
Higher Education for People with Disabilities – Romanian Education Experience
2014
Abstract Implementation of a project which aimed was having access to a quality higher education to prospective students with disabilities has been a successful complex situations, obstacles, fears, future projections etc. Among the obstacles that hamper their access to higher education are: high costs, almost prohibitive for universities to provide suitable means for assimilation of the curriculum for these people with disabilities, physical barriers (inability to move at the college in order to pursue these courses or to access course materials in print format standard), material and financial matters such as, lack of qualified staff for educational mentoring people with disabilities, lac…
From Face-to-Face to Online UDeL Camps: Supporting Staff at Higher Education Institutions in Developing Universal Design for eLearning (UDeL)
2021
The TINEL Project is running a series of camps for staff at higher education institution to support them in developing inclusive eLearning. The first camp was conducted face-to-face, but the coronavirus pandemic meant that the second camp was conducted online. This created a case study in inclusive eLearning in itself and allowed us to experience and reflect on the challenges and opportunities of inclusive online teaching and learning. This paper presents the structure and content of the two camps, our reflections on moving from a face-to-face to an online situation and our elaboration how the UDL principles apply to eLearning to create Universal Design for eLearning (UDeL). We found that b…
Universal formulas for characteristic classes on the Hilbert schemes of points on surfaces
2007
This article can be seen as a sequel to the first author's article ``Chern classes of the tangent bundle on the Hilbert scheme of points on the affine plane'', where he calculates the total Chern class of the Hilbert schemes of points on the affine plane by proving a result on the existence of certain universal formulas expressing characteristic classes on the Hilbert schemes in term of Nakajima's creation operators. The purpose of this work is (at least) two-fold. First of all, we clarify the notion of ``universality'' of certain formulas about the cohomology of the Hilbert schemes by defining a universal algebra of creation operators. This helps us to reformulate and extend a lot of the f…
Derechos de la viuda en la Valencia foral
2001
This article is about the rights of widows over their deceased husbands’ goods. We can not forget that, because of regulations regarding the separation of properties, these women are in a defenceless situation if they lack their own property, having to depend in most cases on their husbands’ testament. The severity of the system has to be alleviated with dowries, in order that when their husbands die women without inheritance could have at least a certain security. They are in a situation of economic vulnerability, especially grave when their husbands die without property. In this case, the widow’s rights are important in order to ameliorate the economic suffering they experience in their j…
Libro de las historias y cosas acontecidas en Alemaña, España, Francia, Italia, Flandres, Inglaterra, Reyno de Artois, Dacia, Grecia, Sclauonia, Eg…
1562
Sign.: [cristus]10, A-Z8, Aa-Hh8, Ii-Kk6 Les il. són grav. xil. Text a dos col. i f. j orlat. - Lletra gòt., títols, encapçalaments i part de prelim. en rom. - Port. amb esc. xil. reial