Laguerre-Angelesco multiple orthogonal polynomials on an rr-star

We investigate the type I and type II multiple orthogonal polynomials on an $r$-star with weight function $|x|^{\beta}e^{-x^r}$, with $\beta>-1$. Each measure $\mu_j$, for $1\leq j \leq r$, is supported on the semi-infinite interval $[0,\omega^{j-1}\infty)$ with $\omega=e^{2\pi i/r}$. For both the type I and the type II polynomials we give explicit expressions, the coefficients in the recurrence relation, the differential equation and we obtain the asymptotic zero distribution of the polynomials on the diagonal. Also, we give the connection between the Laguerre-Angelesco polynomials and the Jacobi-Angelesco polynomials on an $r$-star.Comment: 33 pages, 4 figures. arXiv admin note: text overlap with arXiv:1804.0751

Digital throwntogetherness: young Londoners negotiating urban politics of difference and encounter on Facebook

The question of how we can live together with difference is more urgent than ever, now that more than half of the world’s population live in cities. For example, the majority of London’s inhabitants are ethnic minorities. Following Massey (2005), city dwellers negotiate a situation of intense “throwntogetherness,” as they live in the proximity of ethnic, racial, and religious others. Shifting the dominant focus of media and migration scholarship from transnational communication toward local everyday practices, this article develops the notion of digital throwntogetherness to chart relationships between geographically situated digital identifications and the urban politics of cultural difference and encounter. The argument draws from in-depth interviews with 38 young people living in Haringey, one of the most diverse areas in London, and builds on digital methods for network visualizations. Two Facebook user experiences are considered: transnational networking with loved ones scattered around the world and engagement with geographically proximate diverse digital identifications

The politics of transnational affective capital: digital connectivity among young Somalis stranded in Ethiopia

This article presents an explorative qualitative case study of how sixteen young Somali migrants stranded in Addis Ababa, Ethiopia feel about staying in touch with loved ones abroad using Internet-based transnational communication. Left-behind during transit migration from Somalia to overseas, at this moment they can only digitally connect with contacts living inside for example dreamed diasporic locations in Europe. Based on in-depth interviews, a focus group and concept maps drawn by informants the ambivalent workings of affects spurred by transnational communication are explored. The intense feelings of togetherness originating in Skype video-chat, mobile phone calls and Facebook use are conceptualized with the notion of transnational affective capital – one of the only sources of capital the informants have. The ambivalence of transnational affective capital is scrutinized by exploring whether such connectivity routines offer trust, enable anxiety management and promote ‘ontological security’. Alternatively, the question arises whether transnational communication may further exacerbate ontological insecurity: discomfort, unsettlement and increased anxiety related to the precarious situation of being stranded

The digital imaginaries of urban youth

As young people move from one hot app to the next, Koen Leurs explains social media practices among working and (upper) middle class youth in London and finds significant differences in relation to family contexts. Koen is a researcher in the Department of Media and Communications at the LSE. He has a background in gender studies and currently seeks to understand how young Londoners engage with cultural diversity using social media such as Facebook, Twitter and YouTube