Results 31 to 40 of about 44,187 (190)
An Algebraic Formulation for the Configuration Transformation of a Class of Reconfigurable Cube Mechanisms [PDF]
Mechanical Sciences, 2017 Abstract. This paper presents an algebraic strategy for formulating the configuration transformation of a special class of reconfigurable cube mechanism (RCM) made by 23 cyclically connected sub-cubes. The RCM studied here is kinematically equivalent to a spatial eight-bar linkage having eight transformable configurations.
Chin‐Hsing Kuo +2 more
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Relative (non-)formality of the little cubes operads and the algebraic Cerf lemma [PDF]
American Journal of Mathematics, 2018 It is shown that the operad maps $E_n\to E_{n+k}$ are formal over the reals for $k\geq 2$ and non-formal for $k=1$. Furthermore we compute the cohomology of the deformation complex of the operad maps $E_{n}\to E_{n+1}$, proving an algebraic version of the Cerf Lemma.
Victor Turchin, Thomas Willwacher
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Algebraic method to recover superpolies in cube attacks [PDF]
IET Information Security, 2020 Cube attacks are an important type of key recovery attacks against nonlinear feedback shift register (NFSR)-based cryptosystems. The key step in cube attacks closely related to key recovery is recovering superpolies. However, in the previous cube attacks including original, division property based and correlation cube attacks, the algebraic normal form
Chen-Dong Ye, Tian Tian
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Journal of Pure and Applied Algebra, 1981 This is the first of two papers whose main purpose is to prove a generalisation of the Seifert-Van Kampen theorem on the fundamental group of a union of spaces. This generalisation (Theorem C of [8]) will give information in all dimensions and will include as special cases not only the above theorem (without the usual assumptions of path-connectedness)
Ronald Brown, Philip J. Higgins
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Strong no-loop conjecture for algebras with two simples and radical cube zero [PDF]
Colloquium Mathematicum, 2005 Let \(\Lambda\) be an Artinian ring, with the Jacobson radical \(J\), and let \(S\) be a simple \(\Lambda\)-module. The strong no-loop conjecture says that if \(\text{Ext}^1_\Lambda S\neq 0\), then the projective dimension of \(S\) is infinite. This conjecture is known to hold if \(J^2=0\) or if \(\Lambda\) has only one simple module up to isomorphism.
Bernt Tore Jensen
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Enumeration and investigation of acute 0/1-simplices modulo the action of the hyperoctahedral group
Special Matrices, 2017 The convex hull of n + 1 affinely independent vertices of the unit n-cube In is called a 0/1-simplex. It is nonobtuse if none its dihedral angles is obtuse, and acute if additionally none of them is right.
Brandts Jan, Cihangir Apo
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Skew Group Algebras, (Fg) and Self-injective Rad-Cube-Zero Algebras [PDF]
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Mads Hustad Sandøy
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On the universal sl_2 invariant of ribbon bottom tangles
, 2009 A bottom tangle is a tangle in a cube consisting of arc components whose boundary points are on a line in the bottom square of the cube. A ribbon bottom tangle is a bottom tangle whose closure is a ribbon link.
Lawrence +6 more
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Noncommutative Lattices and Their Continuum Limits [PDF]
, 1995 We consider finite approximations of a topological space $M$ by noncommutative lattices of points. These lattices are structure spaces of noncommutative $C^*$-algebras which in turn approximate the algebra $\cc(M)$ of continuous functions on $M$. We show
Balachandran +20 more
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, 2015 We characterize absorption in finite idempotent algebras by means of J\'onsson absorption and cube term blockers. As an application we show that it is decidable whether a given subset is an absorbing subuniverse of an algebra given by the tables of its ...
Barto, Libor, Kazda, Alexandr
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