Search results for "REPRESENTATION"
showing 10 items of 1710 documents
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…
Deformation quantization of covariant fields
2002
After sketching recent advances and subtleties in classical relativistically covariant field theories, we give in this short Note some indications as to how the deformation quantization approach can be used to solve or at least give a better understanding of their quantization.
Integrating over quiver variety and BPS/CFT correspondence
2019
We show the vertex operator formalism for the quiver gauge theory partition function and the $qq$-character of highest-weight module on quiver, both associated with the integral over the quiver variety.
IRT Modeling of Decomposed Student Learning Patterns in Higher Education Economics
2019
Researchers have spent decades arguing how to measure improvements in learning within formal settings, where achievements are intended and presupposed, in a reliable and valid way. Repeated measures are required to investigate improvements of any kind. Students usually take a multiple-choice test at least twice with the difference between the two measurements indicating how much they have learned. Walstad and Wagner (J Econ Educ 47:121–131, 2016) presented a new approach to gathering more information about different learning patterns by decomposing these difference measures. They describe the patterns of positive learning (PL) and negative learning (NL), i.e., the development from not knowi…
Las materias de Patrimonio y Museología en el grado de Historia del Arte en universidades españolas
2020
Este artículo analiza la incorporación en el ámbito universitario de los contenidos de Patrimonio y Museología vinculados a la Historia del Arte. A pesar de que son inherentes al nacimiento de la disciplina, su presencia explícita en los planes de estudio es bastante reciente. Con especial protagonismo se incorporaron con la creación de la licenciatura de la Historia del Arte y, después, del grado. En este caso, a partir de su diseño bajo las exigencias del Espacio Europeo de Educación Superior (EEES). Con dicho marco, se compara la actual representación de las asignaturas de Patrimonio y Museología en el grado de Historia del Arte en las universidades españolas, así como su imbricación con…
On the graded identities and cocharacters of the algebra of 3×3 matrices
2004
Abstract Let M2,1(F) be the algebra of 3×3 matrices over an algebraically closed field F of characteristic zero with non-trivial Z 2 -grading. We study the graded identities of this algebra through the representation theory of the hyperoctahedral group Z 2 ∼S n . After splitting the space of multilinear polynomial identities into the sum of irreducibles under the Z 2 ∼S n -action, we determine all the irreducible Z 2 ∼S n -characters appearing in this decomposition with non-zero multiplicity. We then apply this result in order to study the graded cocharacter of the Grassmann envelope of M2,1(F). Finally, using the representation theory of the general linear group, we determine all the grade…
Fuentes agrarias pre catastrales valencianas. Su utilidad geográfica
1998
Valencia agrarian precatastral sources. Its geographical utility. The socalled Llibres de Values de la Peyta and Cap-patrons are the oldest agrarian census in Valencia. As a geographic source, they give information about the properties, their division into plots, and about the types of lands and crops. They also make possible an approximate cartographic representation of all this.
Matilde Ucelay Maortua. Single-family house for Vincente Sebastian Llegat
2016
Between 1931 and 1936, the Second Republic in Spain was proclaimed. A social and political model consolidated as one of the most prolific according the artistic point of view. The new democratic regime brought many basic rights for women as the chance to complete their university studies. An emblematic figure of the cultural and architectural revolution of Spain was Matilde Ucelay Maortua. The project here analyzed is the house of Vicente Sebastián Llegat in Pradolargo-Pozuelo de Alarcón, of 1968. Matilde Ucelay designed a building with two levels, a large garden, a swimming pool and the outside porch marking the environment of the L-structure of the house. The critical redrawing of the Uce…
Path integral solution by fractional calculus
2008
In this paper, the Path Integral solution is developed in terms of complex moments. The method is applied to nonlinear systems excited by normal white noise. Crucial point of the proposed procedure is the representation of the probability density of a random variable in terms of complex moments, recently proposed by the first two authors. Advantage of this procedure is that complex moments do not exhibit hierarchy. Extension of the proposed method to the study of multi degree of freedom systems is also discussed.
Alphabet as a pretext. Representation and architecture starting from J.D. Steingruber
2020
Johann David Steingruber (1702-87) realizzò nel 1773 l’ “Alfabeto Architettonico” (titolo originale “Architektonisches Alphabeth bestehend aus 30 Rissen”),ovvero un compendio di edifici immaginari le cui piante presentano la forma delle lettere dell’alfabeto. A partire dall’analisi delle tavole, obiettivo del contributo è presentare una riflessione su questi disegni, sia in relazione alle intrinseche caratteristiche storiche ed estetiche, sia in relazione alla personalità dello Steingruber. Johann David Steingruber (1702-87) realized in 1773 the “Architectural Alphabet” (original title “Architektonisches Alphabeth bestehend aus 30 Rissen”), that is a compendium of imaginary buildings with p…