180,473 research outputs found
On the unimodularity of minimal vectors of Humbert forms
No full textBaeza,R.(reprint author). Instituto de Matemáticas, Universidad de Talca, Casilla 721, Talca, Chile
On the level of principal ideal domains
No full textBaeza, R (Baeza, R.)Univ Talca, Inst Matemat, Talca, ChileWe construct principal ideal domains with level different from the level of their fields of fractions. We also make some remarks on the sublevel of principal ideal domain
La Lírica tradicional infantil de México : letra y música
Get PDF"En la tesis se establecen ciertas consideraciones para definir lo que es la lírica tradicional infantil. Asimismo, reviso someramente algunos de los estudios literarios y musicales más representativos; incluyo una revisión de antologías y fonogramas y comento los criterios de clasificación que los autores han utilizado para organizar sus recopilaciones, destaco recurso literarios como las aliteraciones, las anáforas, las repeticiones, onomatopeyas y jitanjáforas como figuras retóricas predominantes en la poesía infantil. Para ello se analizo los niveles de desarrollo musical; expone que todo texto sostenido por una melodía es una canción que puede tener diferentes niveles de desarrollo melódico y por lo tanto se puede determinar si se trata de una canción pre melódica o melódica tonal, isorrítmica u homorrítmica"
Linkage of fields in characteristic
No full textBaeza R. Instituto de Matemática y Física,Universidad de Talca,Casilla 747,Talca,Chile
Surveying Party on Ojinaga
No full textPhotograph taken in San Francisco, Ojinaga, Mexico in 1917. The men are (L-R): Mr. Nestor Baeza, Mr. Manuel Dominguez, and Mr. Francisco Granado. They using mules to help Mr. Baeza measure his land
Être chrétien sans ambiguïtés
No full textBaeza R. Manuel. Être chrétien sans ambiguïtés. In: Autres Temps. Les cahiers du christianisme social. N°7, 1985. pp. 52-54
On some invariants of fields of characteristic p>0
No full textBaeza, R. Instituto de Matemáticas, Universidad de Talca, Casilla 721, Talca, Chil
[I. S. Cruz. Baeza]
No full textsello azul de fotografo al verso, manuscrito en el verso, bordes no lineales175x120 mm, copia a la gelatina de revelado químico en b/n1.1.1. Su numero de registro topografico de compra de documentacion: R-5090
1.1.2. Manuscrito en el verso
1.4.4. En el sello se lee "Baras. Fotografia. Ubeda"Detalle de pintura al temple de las absides de la Iglesia de Santa Cruz de Baeza. Jaén.Unidad Documenta
Relations in I-n and (IWq)-W-n in characteristic 2
No full textBaeza, R. Instituto de Matemáticas, Universidad de Talca, Casilla 721, Talca, ChileLet K be a field of characteristic 2. We give natural presentations of the subgroups In(K) of the Witt ring W(K) of K and the subgroups InWq(K) of the Witt group Wq(K) of K. Our results generalize the results of Arason and Elman in [J.K. Arason, R. Elman, Powers of the fundamental ideal in the Witt ring, J. Algebra 239 (2001) 150–160], where the characteristic is assumed to be different from 2
Exploration Trade-offs in Web Recommender Systems
Get PDFOne of the main problems of web recommender systems is exposure bias, due to the fact that the web system itself is partly generating its own future, as users can only click on items shown to them. This bias not only creates popularity bias for products but also is one of the main challenges for recommender systems that deal with a very dynamic environment, where new items and users appear frequently and also user preferences change (or the market changes as happened with the coronavirus pandemic). The main paradigm to deal with these changes is to explore and exploit, avoiding the filter bubble effect. However, too much exploration also reduces short-term revenue and hence is usually traffic bounded. In this work, we present a counterfactual analysis that shows that web recommender systems could improve their long-term revenue if significantly more exploration is performed. This is good for the web recommender system but also for everyone as it creates more fair and healthy digital markets. This also improves the web user experience so is a double win-win for the e-commerce platform, the sellers, the users, and ultimately society
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