Acta Didactica Norge 2007 - 2017
نویسندگان
چکیده
منابع مشابه
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Elsa Vieira-Sousa1,2, João Cavaleiro3, Ana Filipa Mourão4, 5, Ana M. Rodrigues2,5,6 António Albino-Teixeira7, Fernando M Pimentel-Santos4,5, Filipa Oliveira-Ramos1,2, Helena Canhão5, Joaquim Polido Pereira1,2, João Eurico Fonseca1,2, José António Pereira da Silva8, José Carlos Romeu1,2, José Melo Gomes9, Lúcia Costa10, Luís Graça2, Maria José Leandro11, Maria José Santos12, Pedro M. Machado13, ...
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As we know, there exist many interesting mathematical problems in Theoretical Computer Science, as the comparison of characters between strings, or the acceptation / decision of languages by Turing Machines. Also others, as the ”halting problem” or the ”travel salesman problem”, are undecidable. And many other remain open, only conjectured. We can establish some results, known as Hierarchy Theo...
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Open Access, no copyright Since 2005, Acta Orthopaedica has been a platinum Open Access journal. This means that all articles from 1930 until now are immediately free for everyone to read and download. Acta has no copyright on articles, which are all published under a Creative Commons Licence that permits all non-commercial use of them. Platinum Open Access means that the authors pay nothing fo...
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Jan/Feb, 2016. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Acta Polytechnica 00(0):1–8, 0000 © Czech Technical University in Prague, 2015 PREPRINT 2015-09-24 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 9...
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We consider the linear and nonlinear Schrödinger equation for a Bose-Einstein condensate in a harmonic trap with PT -symmetric double-delta function loss and gain terms. We verify that the conditions for the applicability of a recent proposition by Mityagin and Siegl on singular perturbations of harmonic oscillator type self-adjoint operators are fulfilled. In both the linear and nonlinear case...
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ژورنال
عنوان ژورنال: Acta Didactica Norge
سال: 2017
ISSN: 1504-9922
DOI: 10.5617/adno.5545