339 research outputs found
Alexandr Berndorf - author of my region
No full textTéma této bakalářské práce nese název Alexandr Berndorf autor mého regionu. Práce je rozdělena do několika částí. První kapitola se zabývá životem tohoto spisovatele a vychází z autorova vlastnoručně psaného životopisu a životopisné studie napsané Zdeňkem Papešem. Dále si práce všímá části beletristické tvorby Alexandra Berndorfa a jeho vztahu k rodnému kraji. Hlavním cílem práce je představit tohoto dnes již nepříliš známého autora a připomenout jeho přínos nepomuckému regionu.ObhájenoThe topic of this Bachelor thesis is Alexandr Berndorf an author from my native region. The work itself is divided into several parts. The first chapter maps the life of this writer and is based on his own autobiography as well as a biographic study written by Zdeněk Papeš. Furthermore, the thesis focuses on Berndorf's prose and his relationship with his birth land. Overall, its main goal is to introduce this almost forgotten author and to remind everybody of his contribution to the Nepomuk region
On the normality of Boolean quartics
No full textIn the BFA 2023 conference paper, A. Polujan, L. Mariot and S. Picek exhibited the first example of a non-normal but weakly normal bent function in dimension 8. In this note, we present numerical approaches based on the classification of Boolean spaces to explore in detail the normality of bent functions of 8 variables and we complete S. Dubuc s results for dimensions less or equal to 7. Based on our investigations, we show that all bent functions in 8 variables are normal or weakly normal. Finally, we conjecture that more generally all Boolean functions of degree at most 4 in 8 variables are normal or weakly normal
Boolean and vectorial functions : a design-theoretic point of view
No full textIn der vorliegenden Arbeit untersuchen wir verschiedene Klassen kryptografisch bedeutsamer Funktionen wie beispielsweise bent, plateaued und differentially uni-form Funktionen sowie aus diesen Funktionen konstruierte Inzidenzstrukturen.
Zunächst untersuchen wir vektorielle bent Funktionen in wenigen Variablen. Wir klassifizieren und enumerieren alle vektoriellen bent Funktionen in sechs Variablen. Damit vervollständigen wir die Klassifizierung perfekter nichtlinea-rer Funktionen in sechs Variablen vom algebraischen Grad höchstens drei und die Liste der bent Funktionen in sechs Variablen. Darüber hinaus zeigen wir, dass im Gegensatz zu Booleschen bent Funktionen nicht alle vektoriellen bent Funktionen in sechs Variablen bis auf EA-Äquivalenz durch Maiorana-McFarland und Desarguesian partial spread Konstruktionen beschrieben werden können.
Wir untersuchen ferner, ob sich bestimmte Eigenschaften von Booleschen und vektoriellen bent Funktionen sowie deren Verallgemeinerungen in den zugehö-rigen Inzidenzstrukturen widerspiegeln, die in einigen Fällen zur gut erforsch-ten Klasse der kombinatorischen Designs gehören. In diesem Zusammenhang stellen wir eine neue Konstruktion von Inzidenzstrukturen aus Booleschen und vektoriellen Funktionen vor und präsentieren zwei Anwendungen dieser Objek-te zur Untersuchung von bent Funktionen. Die erste Anwendung ist eine de-signtheoretische Charakterisierung von bent Funktionen innerhalb der plateau-ed Funktionen, die zweite ist eine kombinatorische Interpretation des Erweiter-barkeitsproblems für bent Funktionen. Wir stellen ferner eine große Klasse fast perfekt-nichtlinearer Funktionen (APN-Funktionen) vor, deren lineare Codes 2-Designs tragen. Aus diesem Ergebnis entwickeln wir eine neue hinreichende Bedingung für die CCZ-Nichtäquivalenz von APN-Funktionen mit dem klassi-schen Walsh-Spektrum zu quadratischen Funktionen.
Zum Abschluss untersuchen wir kubische Boolesche bent Funktionen. Wir beweisen, dass im Gegensatz zu den Fällen mit n = 6 und n = 8 Variablen die Maiorana-McFarland Konstruktion für alle n ≥ 10 nicht die gesamte Klasse der kubischen bent Funktionen in n Variablen beschreiben kann. Außerdem zeigen wir für unendlich viele n ≥ 10 die Existenz kubischer bent Funktionen in n Variablen, die homogen sind, keine affinen Ableitungen haben und nicht in der abgeschlossenen Maiorana-McFarland Klasse sind.Abstract
In this thesis, we investigate various classes of cryptographically significant func-tions, including bent, plateaued and differentially uniform functions, as well as the incidence structures constructed from these mappings.
First, we investigate vectorial bent functions in a small number of variables. We classify and enumerate all vectorial bent functions in six variables. Thereby, we complete the classification of perfect nonlinear functions in six variables of algebraic degree at most three and the enumeration of bent functions in six vari-ables. Moreover, we show that all vectorial bent functions in six variables, in con-trast to the Boolean bent functions, cannot be described, up to EA-equivalence, by Maiorana-McFarland and Desarguesian partial spread constructions.
Furthermore, we investigate whether certain properties of Boolean and vecto-rial bent functions, as well as their generalizations, may be reflected by the asso-ciated incidence structures, which in some cases, fall into the well-studied class of combinatorial designs. In particular, we introduce a new construction of inci-dence structures from Boolean and vectorial functions called nonvanishing flats and provide two applications of this object to study bent functions. The first is a design-theoretic characterization of bent functions among plateaued functions, and the second is a combinatorial interpretation of the extendability problem for bent functions. We also provide a large class of APN functions, whose linear codes support 2-designs. Using this result, we give a new sufficient condition for APN functions with the classical Walsh spectrum to be CCZ-inequivalent to quadratic functions.
Finally, we investigate cubic Boolean bent functions. We prove that, in con-trast to the cases of n = 6 and n = 8 variables, the Maiorana-McFarland con-struction does not describe the whole class of cubic bent functions in n variables for all n ≥ 10. Moreover, we show that cubic bent functions in n variables that are homogeneous, have no affine derivatives and are not in the completed Maiorana-McFarland class exist for infinitely many n ≥ 10
Alexandr Sukorov’s passıng world
No full textThe author of this article concentrates his attention on the films directed by Alexandr Sokurov, a distinguished contemporary Russian filmmaker. Syska describes the political and aesthetical background of Sokurov’s works, underlying their key motifs: melancholy, nostalgia, reminiscences, decay of physical world, memories and time. The author mentions autobiographical components of Sokurov’s screenplays, describes his childhood defined by eternal displacement of his family, as well as the adultness - with political troubles caused by anti-communism attitude and close friendship with Tarkovsky. Syska analyzes the literary context of Sokurov’s films, cultural paradigm, religious character of film narration and theme of carnal sacrifice. All of them allow him to describe the human as someone who is deeply devoted to the internal world of memories, nostalgia, passing time and intimate relationship with dying parents
Los "Suvenires del meldar" de Alexandr Ben-Guiat
No full textThe present paper offers the edition of a Judeo-Spanish text describing certain aspects of the meldar -the Jewish religious elementary school- in late nineteenth-century Smyrne. The author of the text presents in an ironic fashion a number of amusing situations and anecdotes which he himself had experienced as a boy during his schooldays. The work provides us with important data of a socio-historical interest that broadens our knowledge of education within Sephardic communities in the Eastern Mediterranean world
Cubic bent functions outside the completed Maiorana-McFarland class
No full textIn this paper we prove that in opposite to the cases of 6 and 8 variables, the Maiorana-
McFarland construction does not describe the whole class of cubic bent functions in n
variables for all n ≥ 10. Moreover, we show that for almost all values of n, these functions
can simultaneously be homogeneous and have no affine derivatives.Projekt DEAL 202
Value Distributions of Perfect Nonlinear Functions
No full textIn this paper, we study the value distributions of perfect nonlinear
functions, i.e., we investigate the sizes of image and preimage sets. Using
purely combinatorial tools, we develop a framework that deals with perfect
nonlinear functions in the most general setting, generalizing several results
that were achieved under specific constraints. For the particularly interesting
elementary abelian case, we derive several new strong conditions and
classification results on the value distributions. Moreover, we show that most
of the classical constructions of perfect nonlinear functions have very
specific value distributions, in the sense that they are almost balanced.
Consequently, we completely determine the possible value distributions of
vectorial Boolean bent functions with output dimension at most 4. Finally,
using the discrete Fourier transform, we show that in some cases value
distributions can be used to determine whether a given function is perfect
nonlinear, or to decide whether given perfect nonlinear functions are
equivalent.Comment: 28 pages. minor revisions of the previous version. The paper is now
identical to the published version, outside of formattin
Lyrical elements in Lorca's theatre - (Bodas de sangre - Bloody wedding)
No full textHerman, Alexandr. Lirical elements in Lorca´s theatre - Bloody wedding. České Budějovice: Pedagogická fakulta Jihočeské univerzity v Českých Budějovicích, 2011, 103 s., Diploma thesis. This diploma thesis presents lyrical elements in teatral work of Federico García Lorca. Author himself belogs among top members of an avantgarde movement in Spain. His dramas are up to now very often shown at the most prestigious theatre house in the world, his poetry, very often explained in new interpretation, absorbing an echoe of the folk lyric. The author was bor in the year 1898, year that ment withdrawal from its ancient position. This new situation is reflected at a new actitude towards an art and Spain. This work is divided into three parts
Alexandr Solzhenitsyn - Man and Author in Time
No full textBanchelor study deals with basic moments of life and production by Russian writer Alexander Solzhenitsyn. He won the Nobel prize for literature and also he is author of famous publications such as One Day in the Life of Ivan Denisovich and The Gulag Archipelago. This work is focusing on his publicists and also how his publication impress the readers. Work describing fate of human, who gone thru siberian forced labour camp and who truly testified about crucial events of 20th century. This work including documenty enclosure
Alexandr Gel'evič Dugin's Neo-Eurasianist Ideology in Contemporary Russia
No full textopenL’oggetto della tesi consiste in un’analisi dell’ideologia neo-eurasista dal punto di vista di Alexandr Dugin, filosofo autore de “La Quarta Teoria Politica” e di svariati saggi ad essa correlati. L’obiettivo di tale ricerca è molteplice, sviluppandosi in tre parti: la prima concerne la ricostruzione storica di alcune dinamiche della società e della cultura russa che hanno gettato le fondamenta per questa corrente di pensiero, ripercorrendo le tappe dell’eurasismo classico e dei suoi più noti esponenti. La seconda entra nel merito della Quarta Teoria Politica e dell’idea di Eurasia per Alexandr Dugin, attraverso le concezioni di civiltà, popolo e grandi spazi, decostruendo per quanto possibile la dialettica del pensatore. Questa è l parte di gran lunga più densa ed importante, dove sono esposte le caratteristiche esoteriche e strettamente metafisiche del pensiero di Dugin. Infine, l’ultima branca è dedicata alla prassi ideologica per come si sta manifestando nella Russia contemporanea, gettando uno sguardo obiettivo sull’effettiva influenza del filosofo nella politica della Federazione. In conclusione, l’eurasismo, così come il neo-eurasismo, sono esposti in questa tesi come un aspetto poco conosciuto ma fondamentale della storia delle dottrine politiche, che ha un reale impatto nel presente stato delle cose in Russia, e in particolare nella crisi Russo-Ucraina e nell'approccio delle relazioni con i Paesi membri della NATO.The object of the thesis consists of an analysis of the neo-Eurasianist ideology from the viewpoint of Alexandr Dugin, philosopher and author of "The Fourth Political Theory" and several related essays. The objective of this enquiry is multiple, developing into three parts: the first one concerns the historical reconstruction of some dynamics of Russian society and culture which laid the foundations for this way of thought, retracing the steps of classical Eurasianism and its most famous representatives. The second gets into the Fourth Political Theory and the idea of Eurasia for Alexander Dugin, through the conceptions of civilization, people and large spaces, deconstructing the thinker's dialectics as much as possible. This is by far the densest and most important part, where the esoteric and strictly metaphysical characteristics of Dugin's thought are exposed. Finally, the last branch is dedicated to ideological praxis as it is manifesting itself in contemporary Russia, casting an objective look at the actual influence of the philosopher in the politics of the Federation. In conclusion, Eurasianism, as well as neo-Eurasianism, are exposed in this thesis as a little-known yet fundamental aspect of the history of political doctrines, which has a real impact on the current domestic affairs in Russia, and in particular dealing with the Russian-Ukrainian crisis and the approach of the relations with the NATO member States
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