Results 41 to 50 of about 24,231 (260)

Isometric Embeddings of Pro-Euclidean Spaces

open access: yesAnalysis and Geometry in Metric Spaces, 2015
In [12] Petrunin proves that a compact metric space X admits an intrinsic isometry into En if and only if X is a pro-Euclidean space of rank at most n, meaning that X can be written as a “nice” inverse limit of polyhedra.
Minemyer Barry
doaj   +1 more source

Structural properties of anisotropic stars in modified teleparallel gravity: a brief study via an embedding approach

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
In this paper, we attempt to construct the anisotropic solution for compact stellar configurations using the observed mass and radius of compact stars from the literature under the influence of Rastall Teleparallel gravity.
Asifa Ashraf   +5 more
doaj   +1 more source

A Compact Integrate-and-Fire Neuron Circuit Embedding Operational Transconductance Amplifier for Fidelity Enhancement

open access: yesIEEE Access, 2023
In this study, a compact CMOS integrate-and-fire (I&F) neuron circuit embedding an operational transconductance amplifier (OTA) has been designed for enhancing the fidelity in output generation.
Arati Kumari Shah   +4 more
doaj   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

open access: yesAdvanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Optimal controls for a class of nonlinear evolution systems

open access: yesElectronic Journal of Differential Equations, 2006
We consider the abstract nonlinear evolution equation $dot{z}+ Az =uBz +f$. Viewing $u$ as control, we seek to minimize $J(u)=int_{0}^{T}L(z(t),u(t)),dt$.
Abdelhaq Benbrik   +2 more
doaj  

Dimensionality optimized machine learning retrieval of canopy chlorophyll, nitrogen, and phosphorus from google satellite embeddings

open access: yesSmart Agricultural Technology
Long-term studies show that canopy chlorophyll, nitrogen, and phosphorus differ in spectral signatures and retrieval stability. This work assessed the retrieval of these biochemical parameters from a global 64-dimensional Google satellite embedding at 10
Mir Md Tasnim Alam, Anita Simic Milas
doaj   +1 more source

On the embedding of compact domains

open access: yesMathematische Zeitschrift, 1970
w 1. Introduction In an earlier paper [4], the author gave necessary and sufficient conditions for a topological left Ore domain to be topologically embeddable in its field of quotients. In w 2, we use the results of [4] to give a new proof of Warner's theorem on open embeddings [7].
openaire   +1 more source

Embeddings of compact Sasakian manifolds [PDF]

open access: yesMathematical Research Letters, 2007
Let M be a compact Sasakian manifold. We show that M admits a CR-embedding into a Sasakian manifold diffeomorphic to a sphere, and this embedding is compatible with the respective Reeb fields. We argue that a stronger embedding theorem cannot be obtained.
Ornea, Liviu, Verbitsky, Misha
openaire   +2 more sources

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

open access: yesAdvanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch   +3 more
wiley   +1 more source

Compactness of Embeddings

open access: yes, 2005
An improvement of the author's result, proved in 1961, concerning necessary and sufficient conditions for the compactness of embedding operators is given. A counterexample to a published statement concerning compactness of embedding operators is constructed.
openaire   +2 more sources

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