Results 21 to 30 of about 17,619 (155)

Reproducing Kernel Hilbert Space vs. Frame Estimates

open access: yesMathematics, 2015
We consider conditions on a given system F of vectors in Hilbert space H, forming a frame, which turn H into a reproducing kernel Hilbert space. It is assumed that the vectors in F are functions on some set Ω .
Palle E. T. Jorgensen, Myung-Sin Song
doaj   +1 more source

The space of twisted cubics [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2021
We consider the Cohen-Macaulay compactification of the space of twisted cubics in projective n-space. This compactification is the fine moduli scheme representing the functor of CM-curves with Hilbert polynomial 3t+1. We show that the moduli scheme of CM-
Katharina Heinrich   +2 more
doaj   +1 more source

Shape Transformation Approaches for Fluid Dynamic Optimization

open access: yesAerospace, 2023
The contribution is devoted to combined shape- and mesh-update strategies for parameter-free (CAD-free) shape optimization methods. Three different strategies to translate the shape sensitivities computed by adjoint shape optimization procedures into ...
Peter Marvin Müller   +2 more
doaj   +1 more source

Ergodicity probes: using time-fluctuations to measure the Hilbert space dimension [PDF]

open access: yesQuantum, 2019
Quantum devices, such as quantum simulators, quantum annealers, and quantum computers, may be exploited to solve problems beyond what is tractable with classical computers. This may be achieved as the Hilbert space available to perform such `calculations'
Charlie Nation, Diego Porras
doaj   +1 more source

Convexity, boundedness, and almost periodicity for differential equations in Hillbert space

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1979
There are three kinds of results. First we extend and sharpen a convexity inequality of Agmon and Nirenberg for certain differential inequalities in Hilbert space.
Jerome A. Goldstein
doaj   +1 more source

More on doubled Hilbert space in double-scaled SYK

open access: yesPhysics Letters B
We continue our study of the doubled Hilbert space formalism of double-scaled SYK model initiated in Okuyama (2024) [7]. We show that the 1-particle Hilbert space introduced by Lin and Stanford (2023) [6] is related to the doubled Hilbert space H0⊗H0 of ...
Kazumi Okuyama
doaj   +1 more source

Crossing complexity of space-filling curves reveals entanglement of S-phase DNA.

open access: yesPLoS ONE, 2020
Space-filling curves have been used for decades to study the folding principles of globular proteins, compact polymers, and chromatin. Formally, space-filling curves trace a single circuit through a set of points (x,y,z); informally, they correspond to a
Nick Kinney   +3 more
doaj   +1 more source

Characterization, Dilation, and Perturbation of Basic Continuous Frames

open access: yesJournal of Mathematics, 2022
A vector-valued function is called a basic continuous frame if it is a continuous frame for its spanning space. It is shown in this article that basic continuous frames and their oblique duals can be characterized by operators with closed ranges ...
Xin Zhao, Pengtong Li
doaj   +1 more source

Notes on the factorisation of the Hilbert space for two-sided black holes in higher dimensions

open access: yesJournal of High Energy Physics
In this paper, we investigate the Hilbert space factorisation problem of two-sided black holes in high dimensions. We demonstrate that the Hilbert space of two-sided black holes can be factorized into the tensor product of two one-sided bulk Hilbert ...
Pan Li
doaj   +1 more source

Dynamics for holographic codes

open access: yesJournal of High Energy Physics, 2020
We describe how to introduce dynamics for the holographic states and codes introduced by Pastawski, Yoshida, Harlow and Preskill. This task requires the definition of a continuous limit of the kinematical Hilbert space which we argue may be achieved via ...
Tobias J. Osborne, Deniz E. Stiegemann
doaj   +1 more source

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