Transcription de la quasi-particule dans l'espace ideal et la méthode des bosons

1969 ◽  
Vol 47 (1) ◽  
pp. 103-111 ◽  
Author(s):  
P. A. Simard
Keyword(s):  
Ideal Space ◽  
Canonical Transformations ◽  
Quasi Particle ◽  
The Ideal

A transcription of the quasi-particle into the ideal space is written in such a way that all the terms which contribute for the three quasi-particles system in QTD approximation can be found. Canonical transformations between the ideal quasi-particles are studied. An application to one shell is done with the result that the boson method gives exactly the same spectra as the Kuo method.

Etude de la transcription de la quasi-particule dans l'espace idéal

1970 ◽  
Vol 48 (7) ◽  
pp. 819-826 ◽  
Author(s):  
M. Banville ◽  
P. A. Simard
Keyword(s):  
Ideal Space ◽  
Hamiltonian Matrix ◽  
Canonical Transformations ◽  
Matrix Elements ◽  
Quasi Particle ◽  
Invariance Properties ◽  
Particular Solutions ◽  
The Ideal

The transcription of the quasi-particle in the ideal space has been studied in such a way that all terms in the Hamiltonian in the QTD approximation for the system of four quasi-particles can be found. It is found that an infinity of solutions exists which verify the commutator {α, α+} while yielding correct Hamiltonian matrix elements. Finally, particular solutions which do not verify this commutator are found. Their particular invariance properties under canonical transformations make them relatively easy to obtain. Nonphysical states are eliminated by these transcriptions and all the physical states appear properly antisymmetrized.

SUR L'APPROXIMATION DES BOSONS ET L'ANTISYMÉTRIE

1967 ◽  
Vol 45 (10) ◽  
pp. 3241-3245 ◽  
Author(s):  
P. A. Simard
Keyword(s):  
Ideal Space ◽  
Quasi Particle ◽  
Anharmonic Corrections ◽  
Spherical Nuclei ◽  
Unified Description ◽  
Boson Approximation ◽  
The Ideal

A method is presented in the scheme of the boson approximation such that the antisymmetry between the quasi-particles is introduced naturally. Based on the transcription of the quasi-particle into the ideal space, the method enables one to give a unified description of the anharmonic corrections in the even–even and odd spherical nuclei.

Construction d'une base antisymétrique dans l'espace idéal

1969 ◽  
Vol 47 (23) ◽  
pp. 2645-2650 ◽  
Author(s):  
P. A. Simard
Keyword(s):  
Particle System ◽  
Exclusion Principle ◽  
Ideal Space ◽  
Particle State ◽  
Quasi Particle ◽  
Linearized Equations ◽  
Set Up ◽  
The One ◽  
Number Of Particles ◽  
The Ideal

An antisymmetric basis has been set up in the ideal space as a combination of one boson and one ideal quasi-particle state; in this way a three quasi-particle system may be studied. The knowledge of solutions of linearized equations for two quasi-particles is a requisite for the setting up of this basis. The exclusion principle is thus introduced correctly. The spurious states coming from the non-conservation of the number of particles are separated out and can be rejected easily. The method can be used only in QTD approximation. The one-shell case is discussed as a verification of the method.

Franciscan Books and their Readers

2022 ◽  
Author(s):  
René Hernández
Keyword(s):  
Space Form ◽  
Northern Italy ◽  
Ideal Space ◽  
Skilled Readers ◽  
Personal Library ◽  
Key Aspects ◽  
Cultural Agency ◽  
First Time ◽  
The Ideal

The book explores the manuscripts written, read, and studied by Franciscan friars from the thirteenth to the fifteenth centuries in Northern Italy, and specifically Padua, assessing four key aspects: ideal, space, form and readership. The ideal is studied through the regulations that determined what manuscripts should aim for. Space refers to the development and role of Franciscan libraries. The form is revealed by the assessment of the physical configuration of a set of representative manuscripts read, written, and manufactured by the friars. Finally, the study of the readership shows how Franciscans were skilled readers who employed certain forms of the manuscript as a portable, personal library, and as a tool for learning and pastoral care. By comparing the book collections of Padua’s reformed and unreformed medieval Franciscan libraries for the first time, this study reveals new features of the ground-breaking cultural agency of medieval friars.

Homeomorphic Analytic Maps into the Maximal Ideal Space of H∞

1999 ◽  
Vol 51 (1) ◽  
pp. 147-163 ◽  
Author(s):  
Daniel Suárez
Keyword(s):  
Maximal Ideal ◽  
Maximal Ideal Space ◽  
Ideal Space ◽  
Gleason Part ◽  
Interpolating Sequences ◽  
Closed Subalgebra ◽  
Analytic Maps ◽  
The Ideal

AbstractLet m be a point of the maximal ideal space of H∞ with nontrivial Gleason part P(m). If Lm : D → P(m) is the Hoffman map, we show that H∞ ° Lm is a closed subalgebra of H∞. We characterize the points m for which Lm is a homeomorphism in terms of interpolating sequences, and we show that in this case H∞ ° Lm coincides with H∞. Also, if Im is the ideal of functions in H∞ that identically vanish on P(m), we estimate the distance of any f ϵ H∞ to Im.

Space configurations for empowering university-community interactions

2019 ◽  
Vol 46 (5) ◽  
pp. 689-701 ◽  
Author(s):  
Jens Dorland ◽  
Christian Clausen ◽  
Michael Søgaard Jørgensen
Keyword(s):  
Science And Technology Studies ◽  
Qualitative Data ◽  
Ideal Space ◽  
Community Interactions ◽  
Policy Makers ◽  
Societal Challenges ◽  
Relational Perspective ◽  
Local Contexts ◽  
Shed Light ◽  
The Ideal

Abstract Some see universities as a possible source of solutions to enable a sustainable transition and overcome societal challenges. Findings from three multisite case studies of Desis Labs, FabLabs, and Science Shops shed light on how universities can help empower communities and solve societal challenges locally. Adopting a sociotechnical and flat relational perspective inspired by science and technology studies (STS), we focus on the material and spatial aspects of how these spaces are configured, thereby ensuring practical relevance for policy makers and practitioners. Applying an analytical generalization methodology, we condense the qualitative data into a typology of three ideal space-types (i.e. affording, mediating, and impact-oriented) that represent specific configurations of actors, researchers, students, communities, spaces, infrastructure, equipment, facilitators, etc. The ideal space-types empower communities in different ways, require different resources to create and operate, and translate differently into specific local contexts.

scholarly journals Ortodontik interseptif: efektivitas rapid palatal expander pada crowding gigi anterior pada anak Interceptive orthodontics: effectivity of rapid palatatal expander in children withanterior teeth crowding

2012 ◽  
Vol 11 (1) ◽  
pp. 22
Author(s):  
Harun Achmad ◽  
Hendrastuti Handayani
Keyword(s):  
Growth And Development ◽  
Orthodontic Treatment ◽  
Permanent Teeth ◽  
Ideal Space ◽  
Lower Jaw ◽  
Tooth Width ◽  
Almost All ◽  
Orthodontic Devices ◽  
Dental Crowding ◽  
The Ideal

Interceptive orthodontic treatment aims to reduce and improve the causes of malocclusion in the stage of growth and development that may have a bad effect in the future. Dental crowding is a state of the disproportion betweenthe size of the teeth, jaw size and arch length. There are three conditions that facilitate the crowding, the width ofthe teeth, small jaw basal bones or a combination of both. One of the techniques of handling the case of childrenanterior crowding due to disproportion size of tooth width with a narrow arch is the rapid palatal expander device(RPE) in order to obtain the ideal space for the teeth and arch length. A boy, aged 11 years, wants to be treated histeeth with complaints teeth of front upper jaw and lower jaw experiencing crowding, thereby disrupting theappearance and mastication. Almost all the permanent teeth have erupted, and the jaw is still in its infancy. Thetreatment is carried out with a combination of fixed orthodontic devices and RPE for 4 months of treatment, showed a positive change in the profile seen in clinical oral cavity conditions of patients.

scholarly journals Topologies of compact families on the ideal space of a Banach algebra

1996 ◽  
Vol 118 (1) ◽  
pp. 63-75 ◽  
Author(s):  
Ferdinand Beckhoff
Keyword(s):  
Banach Algebra ◽  
Ideal Space ◽  
The Ideal

scholarly journals Reseña: Mercedes Blanco, Góngora heroico. Las Soledades y la tradición épica.

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
MªÁngeles Garrido Berlanga
Keyword(s):  
Ideal Space ◽  
Luis De Gongora ◽  
The Relationship ◽  
The Ideal

Resumen: El título de esta publicación de Mercedes Blanco plantea, ya desde su enunciado, Góngora heroico. Las Soledades y la tradición épica, una atractiva cuestión que encuentra el espacio idóneo para su discusión y refutación a lo largo de las páginas que componen la edición. Explicar la relación que las Soledades de Luis de Góngora mantiene con la épica es el objeto principal que trata su autora en la obra. Abstract: The title of the book of Mercedes Blanco titled Góngora heroico. Las Soledades y la tradición épica, poses an attractive question is the ideal space for discussion and rebuttal along the pages that make editing. Explain the relationship Soledades of Luis de Góngora maintains the epic is the main object that is the author's work.

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