426 research outputs found
Alfons Cervera y la construcción de sus personajes (entrevista)
International audienceIn the opening discussion of the "Portrait and self-portrait in contemporary Spanish fiction" study day, Valencian author Alfons Cervera shares his thoughts with Marie Gourgues on the construction of characters in his works.En la charla inaugural de la jornada de estudios « Retrato y autorretrato en la ficción española contemporánea », el autor valenciano Alfons Cervera comparte con Marie Gourgues sus reflexiones acerca de la construcción de los personajes en sus obras.Lors de la discussion inaugurale de la journée d'études « Portrait et autoportrait dans la fiction espagnole contemporaine », l'auteur valencien Alfons Cervera partage avec Marie Gourgues ses réflexions au sujet de la construction des personnages dans ses œuvres
Letter exchange between Zygmunt Celichowski and Alfons Parczewski
Artykuł przedstawia, zachowane w Litewskim Państwowym Archiwum Historycznym w Wilnie, listy Zygmunta Celichowskiego do Alfonsa Parczewskiego, związane z prowadzoną przez nich działalnością społeczną.This article discusses letters written by Zygmunt Celichowski to Alfons Parczewski. The letters are currently held in the Lithuanian Archives of Old Records in Vilnius. The letters concern the social activity performed by both the author and the recipient
On Dixmier’s Fourth Problem
Let g be a finite dimensional Lie algebra over an algebraically closed field k of characteristic zero. Denote by U(g) its enveloping algebra with quotient division ring D(g). In 1974, at the end of his book "Algèbres enveloppantes", Jacques Dixmier listed 40 open problems, of which the fourth one asked if the center Z(D(g)) is always a purely transcendental extension of k. We show this is the case if g is algebraic whose Poisson semi-center Sy(g) is a polynomial algebra over k. This can be applied to many biparabolic (seaweed) subalgebras of semi-simple Lie algebras. We also provide a survey of Lie algebras for which Dixmier's problem is known to have a positive answer. This includes all Lie algebras of dimension at most 8. We prove this is also true for all 9-dimensional algebraic Lie algebras. Finally, we improve the statement of Theorem 53 of Ooms (J. Algebra 477, 95-146, 2017).We would like to thank Michel Van den Bergh for some helpful discussions and for providing Proposition 3.1. We are also grateful to Vladimir Popov for accurately describing the relevant results (and their references) of Katsylo and Bogomolov.
Finally we wish to thank Viviane Mebis for the excellent typing of the manuscript.Ooms, AI (corresponding author), Hasselt Univ, Dept Math, Campus Diepenbeek, B-3590 Diepenbeek, Belgium.
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Active graphical representation as a means for promoting learning from text in secondary level business and economics education: Individual and contextual success factors
The visual divide
Climate change is a playground for visualization. Yet research and technological innovations in visual communication and data visualization do not account for a substantial part of the world’s population: vulnerable audiences with low levels of literacy
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