Results 31 to 40 of about 766 (271)
Bootstrapping inflationary correlators in Mellin space
Journal of High Energy Physics, 2020 We develop a Mellin space approach to boundary correlation functions in anti-de Sitter (AdS) and de Sitter (dS) spaces. Using the Mellin-Barnes representation of correlators in Fourier space, we show that the analytic continuation between AdS d+1 and dS ...
Charlotte Sleight, Massimo Taronna
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On the monoid of cofinite partial isometries of $\qq{N}^n$ with the usual metric
Pracì Mìžnarodnogo Geometričnogo Centru, 2019 In this paper we study the structure of the monoid Iℕn ∞ of cofinite partial isometries of the n-th power of the set of positive integers ℕ with the usual metric for a positive integer n > 2.
Oleg Gutik, Anatolii Savchuk
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PARTIAL ISOMETRIES OF A SUB-RIEMANNIAN MANIFOLD [PDF]
International Journal of Mathematics, 2012 In this article, we obtain the following generalization of isometric C1-immersion theorem of Nash and Kuiper. Let M be a smooth manifold of dimension m and H a rank k subbundle of the tangent bundle TM with a Riemannian metric gH. Then the pair (H, gH) defines a sub-Riemannian structure on M.
openaire +2 more sources
Star Order and Partial Isometries in C*-Algebras
, 2021 : We study the poset of partial isometries in C*-algebras endowed with the *-order and *-orthogonality. We show that this structure is a complete Jordan invariant for AW*-algebras.
Turilova E., Hamhalter J.
core
Approximation by Partial Isometries and Symmetric Approximation of Finite Frames [PDF]
, 2022 We solve the problem of best approximation by partial isometries of given rank to an arbitrary rectangular matrix, when the distance is measured in any unitarily invariant norm.
Antezana, Jorge Abel +1 more
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Design and Analysis of Compression–Torsion Coupling Metamaterials Using the Golden Section Method
Advanced Engineering Materials, EarlyView.A novel compression–torsion metamaterial is engineered using inclined rods and symmetry breaking. To optimize its torsional performance, the golden section method is employed. The mechanical response of the metamaterial is validated through both numerical analysis and experimental validation.
Amirhossein Hassani, Sara Bagherifard
wiley +1 more source
Characterization of Directed Graphs Representing C*-Algebra of Complex Matrices [PDF]
E3S Web of ConferencesQuantum mechanics is a study that plays a major role in determining the biological intelligence of Artificial Intelligence (AI). Point particle systems in quantum mechanics can be explained using C*-Algebra which is called CAR-algebra. There is a special
Hidayat Wahyu, Herlinawati Elin
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Partial isometries and pseudoinverses in semi-Hilbertian spaces [PDF]
, 2016 In this article the concepts of partial isometries, normal partial isometries and generalized projections in the context of operators defined on a semi-Hilbertian space are developed. In particular, we analyze the relationship between these operators and
Fongi, Guillermina +1 more
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Review of Thermally Activated Twisted Coiled Polymer Actuators: A Materials Science Perspective
Advanced Functional Materials, EarlyView.Thermally activated twisted and coiled polymer actuators (TCPAs) combine lightweight design, large deformation, and scalable fabrication for soft robotic and wearable applications. This review connects polymer structure, processing history, helix geometry, and thermomechanical characterization to actuator performance, highlighting current challenges in
Nadja Schenk +3 more
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E. coli Extracellular Matrix: A Tunable Composite With Hierarchical Structure
Advanced Materials, EarlyView.The complex composite‐like mechanical behavior of E. coli biofilm matrix is the result of a synergic contribution of the rigid curli and swelling pEtN‐cellulose, and emerges from specific ratio and assembly conditions. The interactions between the two fibers govern biofilm hydration and characteristic wrinkling patterns, providing crucial insights for ...
Macarena Siri +7 more
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