353 research outputs found
Non-existence of Hopf orders for a twist of the alternating and symmetric groups
No full textJuan Cuadra was supported by grant MTM2017-86987-P from MICINN and FEDER and by the research group FQM0211 from Junta de Andalucía. Ehud Meir was supported by the RTG 1670 “Mathematics inspired by String theory and Quantum Field Theory”. The authors would like to thank Sonia Natale for her comments on a first version of this paper and, specially, for drawing their attention to [7]. The authors are indebted to the attentive referee for his careful revision and apt comments, which helped to improve the original manuscript.Peer reviewe
Multi-channel signal separation based on decorrelation
No full textIncludes bibliographical references (p. 15).Supported by the Defense Advanced Research Projects Agency, monitored by the Office of Naval Research. N00014-89-J-1489 Supported by the U.S. Air Force Office of Scientific Research. AFOSR-91-0034 Supported by the U.S. Navy Office of Naval Research. N00014-90-J-1109 Supported by the Wolfson Research Awards administered by the Israel Academy of Sciences and Humanities.Ehud Weinstein, Meir Feder, and Alan V. Oppenheim
Structure of blocks with normal defect and abelian p′ inertial quotient
No full textOpen Access via the CUP Agreement Funding Information: The first author is grateful to City, University of London for its hospitality during the research for this paper, and to Ehud Meir for conversations about the proof of Theorem . The second author acknowledges support from EPSRC grant EP/T004592/1.Peer reviewe
Descent, fields of invariants, and generic forms via symmetric monoidal categories
No full textThe author was supported by the Danish National Research Foundation (DNRF) through the Centre for Symmetry and Deformation. The author is grateful to Eli Aljadeff, Apostolos Beligiannis, Julien Bichon, Pavel Etingof, Gaston Garcia, Christian Kassel, Bernhard Keller, Henning Krause, Akira Masuoka and Jan Stovicek for guidance and for fruitful discussions.Peer reviewe
Hopf cocycle deformations and invariant theory
No full textOpen Access via Springer Compact Agreement. The author was supported by the Research Training Group 1670, “Mathematics Inspired by String Theory and Quantum Field Theory”.Peer reviewe
From pork to Kapores: transformations in religious practice among the Jews of late imperial Kiev
No full textUntil recently, studies of Jewish religious practices in Imperial Russia have focused on major movements such as Hasidism and mitnagdism as well as the challenges that Haskalah presented to traditional Judaism. Few scholars have scrutinized transformations in everyday religious practices such as the observance of Sabbath and other holidays, synagogue attendance, and liturgical practices. However, new political, social, and economic realities had generated subtle changes in religious practices even in earlier periods and it comes as no surprise, therefore, that religious practices among Jews during the tsarist period, especially in Kiev, were neither monolithic nor static. This article provides a new perspective on this topic by analyzing patterns of religious practice among Jews in one city – examining personal observance, communal practice, synagogue rites and attendance, and religious education – while providing a broader context of reform in Russia. In large urban centers like Kiev, the pressures and temptations of modern life, big-city anonymity, and the vitality and diversity of Jewish community often led to a transformation of prior belief and behavior among new arrivals. The author concludes that despite the absence of a movement for religious reform in the Russian Empire, we can nonetheless observe innovations and changes in religious life emerging out of the attempt to make observance compatible with modern urban life and a nascent Russian-Jewish identity
Orders of Nikshych's Hopf algebra
No full textThe first author was supported by grant MTM2014-54439-P from MICINN and FEDER and by the research group FQM0211 from Junta de Andalucía. The second author was supported by the Danish National Research Foundation (DNRF) through the Centre for Symmetry and Deformation. The authors are grateful to Dror Speiser for doing the previous computer calculation and to Bjorn Poonen for a conversation about the number theoretical condition in Theorem 7.1. The authors are finally indebted to the referee for his/her comments and suggestions, which helped to improve substantially the presentation of the results.Peer reviewe
Semisimple Hopf algebras via geometric invariant theory
No full textI first encountered Geometric Invariant Theory during a program on moduli spaces at the Isaac Newton Institute in Cambridge at the first half of 2011. I would like to thank the Newton Institute and the organizers of the program. I would also like to thank the referee for carefully reading the manuscript and for some valuable comments. During the writing of this paper I was supported by the Danish National Research Foundation through the Centre for Symmetry and Deformation (DNRF92) and by the Research Training Group1670 “Mathematics inspired by String theory and Quantum Field Theory”.Peer reviewe
Interpolations of monoidal categories and algebraic structures by invariant theory
No full textAcknowledgments I would like to thank Pierre Deligne for discussion and comments on an earlier version of the paper. I would also like to thank Lóránt Szegedy for his help with the tikzit package.Peer reviewe
Karaims in the novel Meir Ezofowicz of Eliza Orzeszkowa
No full textMeir Ezofowicz, Eliza Orzeszkowa’s well-known novel published in 1878, features two Karaim characters: Abel and Gołda. The novel itself, however, primarily concerns the Rabbanite Jews. The author of the present article analyses the way in which the Karaims are depicted in the novel via the methods of literature anthropology. Here, the author addresses the question of Eliza Orzeszkowa’s motives for introducing Abel and Gołda into the book – and the way she achieved this. The article demonstrates how the image of the Karaims created by the novelist contains a number of errors and inaccuracies. Although her aim was merely to juxtapose the Karaims with the Jews, bearing in mind the popularity and classic status of the novel, it is valid to say that Meir Ezofowicz may have help shape stereotypes of the Karaims.W znanej powieści Elizy Orzeszkowej pt. Meir Ezofowicz (1878) występuje dwoje Karaimów: Abel i Gołda. Książka jednak dotyczy tematyki żydowskiej. Autor artykułu, posiłkując się inspiracjami ze strony antropologii literatury, próbuje poddać analizie wizerunek Karaimów w tej powieści. Zastanawia się, w jaki sposób i w jakim celu Orzeszkowa wprowadziła do swej powieści postacie Karaimów. Okazuje się, że pisząc o nich popełniła pewne błędy. Ale jej celem było uczynienie z Karaimów przeciwieństwa w stosunku do Żydów, którzy są głównym przedmiotem jej zainteresowania. Ze względu na popularność i rangę Meira Ezofowicza, powieść ta może wpływać na stereotyp Karaimów
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