18,064 research outputs found
Transformations Groups of the Andersson-Perlman Cone
No full text. An Andersson-Perlman cone is a certain subcone\Omega\Gamma K) of the symmetric cone\Omega of a Euclidean Jordan algebra. We exhibit a subgroup of the automorphism group of\Omega which operates transitively on \Omega\Gamma K) and show that \Omega\Gamma K) is a simply-connected submanifold of\Omega . 1. Introduction. Andersson-Perlman cones in the setting of Euclidean Jordan algebras (henceforth abbreviated as AP cones) were introduced by H. Massam and the author in [MN] as a generalization of certain cones defined by the statisticians S. A. Andersson and M. D. Perlman for real symmetric matrices [AP]. All mathematical results in [AP] were generalized in [MN] to the setting of Euclidean Jordan algebras, except the existence of transitive transformation groups which play a predominant role in the development in [AP]. In fact, the paper [MN] stresses a different, perhaps more direct approach to the description of Andersson-Perlman cones by employing Peirce decompositions and Frobeniu..
Dan Andersson
No full textSpecial feature issue on the Swedish author Dan Andersson, with articles by Anders Hallengren, Nisse Munck, Lars Furuland, Lars Järnemo (2), Gösta Ågren, Inge Mattsson, Arne Säll, and Bure Holmbäck.</p
3-D Printed Hail Ice Impactor Vehicle
No full text3-D Printed Hail Ice Impactor Vehicle
Annika Sjoholm-Andersson
Aerospace Engineering
5/1/201
3-D Printed Hail Ice Impactor Vehicle
No full text3-D Printed Hail Ice Impactor Vehicle
Annika Sjoholm-Andersson
Aerospace Engineering
2018-0
Asymmetric and Symmetric Dimethylarginine Predict Outcomes in Patients With Atrial Fibrillation: An ARISTOTLE Substudy
No full textAbstract not availableJohn D. Horowitz, Raffaele De Caterina, Tamila Heresztyn, John H. Alexander, Ulrika Andersson, Renato D. Lopes ... et al
Derex et al. reply: Replying to C. Andersson & D. Read, Group size and cultural complexity
No full textCommentaire de l'article : Group size and cultural complexity. / Andersson C, Read D, Nature,. 2014 Jul 3;511(7507):E1. doi: 10.1038/nature13411.International audienc
Parution : Tobias Andersson : "Early Sunnī Historiography. A Study of the Tārīkh of Khalīfa b. Khayyāṭ", Brill, oct 2018.
No full textEarly Sunnī Historiography. A Study of the Tārīkh of Khalīfa b. Khayyāṭ Series: Islamic History and Civilization, Volume: 157 Author: Tobias Andersson In Early Sunnī Historiography, Tobias Andersson presents the first full-length study of the earliest Islamic chronological history extant: the Tārīkh ( Chronicle) of the Basran ḥadīth scholar and historian Khalīfa b. Khayyāṭ al-ʿUṣfurī (d. 240/854). The book examines how Khalīfa worked as a historian in terms of his social and intel..
Lanczos Spintensor via the Andersson-Edgar's Generator
No full text<p>For arbitrary geometries with Petrov types O, N, III, and D (empty), we construct the Andersson-Edgar's generator for the Lanczos spinor.</p>
Lanczos Spintensor via the Andersson-Edgar’s Generator
No full textFor arbitrary geometries with Petrov types O, N, III, and D (empty), we construct the Andersson-Edgar’s generator for the Lanczos spinor
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