61 research outputs found
The distribution of the maximum condition number on great circles through a fixed 2×2 real matrix
No full textAbstractIf PA(χ) denotes the probability that the maximum condition number along a great circle passing through a matrix A in the unit sphere in the space of 2×2 matrices is less than χ, then PA(χ) always attains its maximum at the normalized identity matrix. This result is the first nontrivial case of a linear algebra version of a conjecture formulated in Shub and Smale (M. Shub and S. Smale, Theoretical Computer Science 113 (1994) 141–164) for homotopies of systems of homogeneous equations. The Hopf fibration is used to relate the probability PA(χ) to the area of an `ellipse' on a sphere in R3
Esfir Shub och kompilationsfilmen : en analys av montaget i Romanovdynastins fall
No full textThis essay is a product of the author’s interest in silent films from Soviet, especially, documentary films. Before the 1920’s documentary filmmaking had mostly been limited to newsreels and short scenes. Only occasional feature-length documentaries had been made. During the 1920s, documentary film achieved new status, not only because of its use as propaganda; it was also identified as artistic cinema. Discussions how to use this genre were taking place all over Europe, and in the US. In France, many different journals on cinema were started. In Soviet the discussions later became politicised. It was a good climate for groundbreaking cinema, and Esfir Shub was one of the film pioneers in Soviet. The ambition with the essay is to give Esfir Shub theoretical approach to non-fiction film a greater acknowledgement. The thesis is how Esfir Shub combines titles and pictures with cutting in The Fall of the Romanov Dynasty (1927) and to theorise the film with Shub’s own conceptual ideas. The method is close reading of the film and the articles written by Shub. The conclusions made by the author, is that Shub uses titles and pictures, in a dynamic cross-cutting between the oppressor and the oppressed. She is faithful to her own theories. She is only using authentically material and not played scenes; otherwise she would distort historical facts. The montage is built in two different ways. Firstly Shub use an ironic tone in the titles when she introduces the oppressors from the old regime, and comment these images widely. Secondly she uses pictures of typical symbols of capitalism and does not need to comment in such matter as earlier, because the film material she had captured speaks for itself
[EFF15S4] Session 4: Rediscovering Esfir Shub: The Compilation Film and the Art of the Editing Table
No full text25 March 2015, 11:30, Birkbeck Cinema
This event combined screenings and discussion to explore the work of Esfir Shub (1894-1959), often considered the inventor of the compilation film, and undoubtedly a major figure in the history of documentary filmmaking. Although her name is always cited in histories of Soviet film and documentary cinema, Shub’s films are rarely if ever seen, with the exception of The Fall of the Romanoff Dynasty (1927). This study day featured screenings of rare films (notably Today and Komsomol: Patron of Electrification), as well as a re-evaluation of Shub’s role as an artist and as a pioneer of the recycling of archive footage in the essay film tradition.
Films: Today [Segodnya], Esfir Shub, Russia, 1930, 35mm, 70 minutes, Russian with English subtitles
Repurposing newsreels and other documentary materials, Shub creates a montage film that seeks to demonstrate the differences between life in communist and capitalist societies.
Komsomol: Patron of Electrification [K.S.E. – Komsomol Shef Elektrifikatsii], Esfir Shub, Russia, 1932, digital, 55 minutes, Russian with English subtitles
A very early Soviet sound film, Shub’s experimental documentary portrays the process of electrification across Soviet society and industry.
Panel:
• Michael Chanan (University of Roehampton, writer and filmmaker, notably The American Who Electrified Russia, 2009)
• Bernard Eisenschitz (film historian, Paris, author of Nicholas Ray: An American Journey, Faber & Faber, 1993, and Gels et dégels: une autre histoire du cinéma soviétique 1926-1968, Mazzotta, 2013)
• Esther Leslie (Birkbeck, author of Hollywood Flatlands: Animation, Critical Theory and the Avant-Garde, Verso, 2004, and Walter Benjamin, reaction, 2007)
• Graham Roberts (University of Leeds Trinity, author of Forward Soviet: History and Non-Fiction Film in the Soviet Union, I.B. Tauris, 1998, and Man with the Movie Camera, I.B. Tauris, 1999
The Limited Too Tween Self-Esteem Project: An Interview with Michael Rayden and Norman Shub
No full textAbstract
The following is an edited interview with Norman Shub, clinical director of the Gestalt Institute of Central Ohio; and Michael Rayden, CEO of the Limited Too. Norman and Mike recently joined forces in helping girls ages 9 through 12 strengthen their self-esteem. The purposes of this interview are to present and explain the project to the Gestalt community, help heighten awareness of the project within the Gestalt community for individuals who want to participate, and to get to know the individuals who are behind the endeavor.</jats:p
Analisis Pola Identifikasi Zero Knowledge Proof Dengan Algoritma Feige Fiat Shamir Menggunakan Blum Blum Shub
No full textProtocol Zero Knowledge Proof is one of the protocols in Cryptography that has a fairly good level of security, because it applies the concept of "Truly Zero Knowledge Proof" which is not leaking any information. This protocol is used in the Fiat Shamir, Guillou Quisquater and Schnorr Feige Algorithms, all of which are Cryptographic Algorithms using private keys and public keys. In the Public key, all three of these Algorithms use a random number generator at the values p and q to get the public key. In this study, the author will generate a public key generation test using CPRNG (Cryptographically-secure Pseudo-Random Number Generator) with the Blum Blum Shub algorithm. The test will be conducted on the Fiat Feige Algorithm, the formation of the key will use the Blum Blum Shub Algorithm, but the Identification Protocol still uses the Fiat Shamir Feige Algorithm. The results of this study show the Feige Fiat Algorithm with the Blum Blum Shub Algorithm as the key builder successfully identifies the pattern sent by the signer
Analisis Pola Identifikasi Zero Knowledge Proof dengan Algoritma Feige Fiat Shamir Menggunakan Blum Blum Shub
No full textProtocol Zero Knowledge Proof is one of the protocols in Cryptography that has a fairly good level of security, because it applies the concept of "Truly Zero Knowledge Proof" which is not leaking any information. This protocol is used in the Fiat Shamir, Guillou Quisquater and Schnorr Feige Algorithms, all of which are Cryptographic Algorithms using private keys and public keys. In the Public key, all three of these Algorithms use a random number generator at the values p and q to get the public key. In this study, the author will generate a public key generation test using CPRNG (Cryptographically-secure Pseudo-Random Number Generator) with the Blum Blum Shub algorithm. The test will be conducted on the Fiat Feige Algorithm, the formation of the key will use the Blum Blum Shub Algorithm, but the Identification Protocol still uses the Fiat Shamir Feige Algorithm. The results of this study show the Feige Fiat Algorithm with the Blum Blum Shub Algorithm as the key builder successfully identifies the pattern sent by the signer
COUNTING TROPICALLY DEGENERATE VALUATIONS AND P-ADIC APPROACHES TO THE HARDNESS OF THE PERMANENT
No full textAbstract. The Shub-Smale τ-Conjecture is a hitherto unproven statement (on integer roots of polynomials) whose truth implies both a variant of P̸=NP (for the BSS model over C) and the hardness of the permanent. We give alternative conjectures, some clearly easier to prove, whose truth still implies the hardness of the permanent. Along the way, we discuss new upper bounds on the number of p-adic valuations of roots of certain sparse polynomial systems, culminating in a connection between quantitative p-adic geometry and complexity theory. Dedicated to Mike Shub, on his 70 th birthday. 1
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