On the first Hochschild cohomology group of a cluster-tilted algebra

Given a cluster-tilted algebra B, we study its first Hochschild cohomology group HH^1(B) with coefficients in the B-B-bimodule B. If C is a tilted algebra such that B is the relation extension of C, then we show that if C is constrained, or else if B is tame, then HH^1(B) is isomorphic, as a k-vector space, to the direct sum of HH^1(C) with k^{n\_{B,C}}, where n\_{B,C} is an invariant linking the bound quivers of B and C. In the representation-finite case, HH^1(B) can be read off simply by looking at the quiver of B.Comment: 30 page

On the representation dimension of tilted and laura algebras

We prove that the representation dimension of a tilted, or of a strict laura algebra, is at most three.Fil: Assem, Ibrahim. University of Sherbrooke; CanadáFil: Platzeck, Maria Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Matemática Bahía Blanca. Universidad Nacional del Sur. Departamento de Matemática. Instituto de Matemática Bahía Blanca; ArgentinaFil: Trepode, Sonia Elisabet. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Matemática Bahía Blanca. Universidad Nacional del Sur. Departamento de Matemática. Instituto de Matemática Bahía Blanca; Argentin

Search of extended or delayed TeV emission from GRBs with HAWC

Gamma-ray bursts (GRBs) are among the most luminous sources in the universe and the nature of their emission up to very high energy is one of the most important open issue connected with the study of these peculiar events. The High Altitude Water Cherenkov (HAWC) gamma-ray observatory, installed at an altitude of 4100 m a. s. l. in the state of Puebla (Mexico), has completed its second year of full operations. Thanks to its instantaneous field of view of ~2 sr and its high duty cycle ($\ge$ 95%), HAWC is an ideal instrument for the study of transient phenomena such as GRBs. We performed a search for TeV emission delayed with respect to, and of longer duration than the prompt emission observed by satellites. We present here the results obtained by observing at the position of a sample of GRBs detected by the Fermi and Swift satellites from December 2014 to February 2017. The upper limits resulting from this analysis are presented and theoretical implications are discussed.Comment: Presented at the 35th International Cosmic Ray Conference (ICRC2017), Bexco, Busan, Korea. See arXiv:1708.02572 for all HAWC contribution

The qualitative and quantitative rise of literature on teaching English to young learners

Author's accepted version (postprint).This is an Accepted Manuscript of an article published by Oxford University Press in ELT Journal on 01/04/2020.Available online: https://academic.oup.com/eltj/article/74/2/202/5814251acceptedVersio

Artefactual narratives of multilingual identity : methodological and ethical considerations in researching children

Author's accepted version (postprint).This is an Accepted Manuscript of a book chapter published by Multilingual Matters in “Ethical and methodological issues in researching young language learners in school contexts” on 10/05/2021.Available online: https://www.multilingual-matters.com/page/detail/Ethical-and-Methodological-Issues-in-Researching-Young-Language-Learners-in-School-Contexts/?k=9781800411418acceptedVersio

Mainstreaming Multilingualism in Education : An Eight-D’s Framework

Author's accepted version (postprint).This is an Accepted Manuscript of a book chapter published by Multilingual Matters in 2022.Available online: https://www.degruyter.com/document/doi/10.21832/9781788926423-007/htmlThis chapter argues for a reconceptualization of language education where linguistically responsive teaching and learning cut across disciplines, language barriers, and educational models. Societies in the 21st century have experienced an unprecedented influx of people from diverse cultural and linguistic backgrounds as a result of globalization. In view of these developments, policy makers, educational professionals, and university researchers are obliged to re-examine the monolingual view of education and create language- and identity-safe equitable learning spaces. This chapter offers a concrete framework for demonolingualizing education in order to mainstream multilingualism in education and thus acknowledge and value learners’ multilingual voices.Mainstreaming Multilingualism in Education: An Eight-D’s FrameworkacceptedVersio

The Multilingual Picturebook in English Language Teaching: Linguistic and Cultural Identity

The many benefits of using picturebooks in the primary classroom include language development as well as an introduction to real-world issues through storytelling and fictitious characters that children can relate to. However, the representation of diversity in children’s literature, both cultural and especially linguistic, has been inadequate. Even though there is a drive to increase cultural diversity in children’s literature, from a linguistic perspective there is still a dearth of multilingual literature in English as foreign language classrooms, for example, selected picturebooks tend to be mostly monolingual. Although they offer a window to difference in faraway places and a mirror of otherness closer to home through the characters and illustrations, they don’t always acknowledge the linguistic aspect of the cultures they are highlighting. Yet, language reinforces the differences and similarities in cross-cultural spaces. This paper investigates the potential role of multilingual picturebooks in the primary EFL classroom. First, it explores the multilingual-multicultural nexus; next, it investigates the representation of cultural and linguistic diversity in picturebooks; finally, it uses the bilingual picturebook, Marisol MacDonald Doesn’t Match / Marisol MacDonald no combina (2011), by Monica Brown and Sarah Palacios (illustrator) to identify the benefits of a multilingual approach to developing intercultural citizenship.publishedVersio