Results 11 to 20 of about 24,705 (268)

Optimum Seeking of Redundant Actuators for M-RCM 3-UPU Parallel Mechanism

open access: yesChinese Journal of Mechanical Engineering, 2021
The singularity problem brings troubles to the design and application for the parallel mechanism. Currently, redundant actuation is one of the useful methods to solve this singularity problem. However, faced to the numerous joints in a parallel mechanism,
Chen Zhao   +4 more
doaj   +1 more source

Wandering singularities [PDF]

open access: yesJournal of Differential Geometry, 2021
Parabolic geometric flows are smoothing for short time however, over long time, singularities are typically unavoidable, can be very nasty and may be impossible to classify. The idea of [CM6] and here is that, by bringing in the dynamical properties of the flow, we obtain also smoothing for large time for generic initial conditions. When combined with [
Colding, Tobias Holck   +1 more
openaire   +4 more sources

Relative singularity categories and singular equivalences [PDF]

open access: yesJournal of Homotopy and Related Structures, 2021
Let $R$ be a right notherian ring. We introduce the concept of relative singularity category $Δ_{\mathcal{X}}(R)$ of $R$ with respect to a contravariantly finite subcategory $\mathcal{X}$ of $\rm{mod}\mbox{-}R.$ Along with some finiteness conditions on $\mathcal{X}$, we prove that $Δ_{\mathcal{X}}(R)$ is triangle equivalent to a subcategory of the ...
openaire   +2 more sources

The Supermoral Singularity—AI as a Fountain of Values

open access: yesBig Data and Cognitive Computing, 2019
This article looks at the problem of moral singularity in the development of artificial intelligence. We are now on the verge of major breakthroughs in machine technology where autonomous robots that can make their own decisions will become an integral ...
Eleanor Nell Watson
doaj   +1 more source

On the Generalized Curvature [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2006
By using methods of nonstandard analysis given by Robinson, A., and axiomatized by Nelson, E., we try in this paper to establish the generalized curvature of a plane curve at regular points and at points infinitely close to a singular point.
Tahir Ismail, Ibrahim Hamad
doaj   +1 more source

Energy Singularity: From Scarcity to Abundance

open access: yesForesight and STI Governance, 2013
The ability to extract and use energy played a decisive role in the development of human civilization. Energy consumption is growing exponentially, thus the only way to avoid future energy crisis is to explore renewable, more abundant sources.
José Luis Cordeiro
doaj   +1 more source

Strength of the naked singularity in critical collapse

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
The critical collapse of a scalar field is a threshold solution of black hole formation, in which a naked singularity arises. We study here the curvature strength of this singularity using a numerical ansatz.
Jun-Qi Guo   +4 more
doaj   +1 more source

Mathematical Singularities in the Farthest Confines of the Universe—And a Brief Report on Its Evolutionary History

open access: yesUniverse, 2023
It is advisable to avoid and, even better, demystify such grandiose terms as “infinity” or “singularity” in the description of the cosmos. Its proliferation does not positively contribute to the understanding of key concepts that are essential for an ...
Emilio Elizalde
doaj   +1 more source

Non-Singular graphs with a Singular Deck

open access: yesDiscrete Applied Mathematics, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Alexander Farrugia   +2 more
openaire   +2 more sources

Singularity, Wielandt’s lemma and singular values

open access: yesJournal of Computational and Applied Mathematics, 2010
The authors obtain some upper and lower bounds for the largest and the smallest singular values of certain complex matrices based on the entries and diagonal dominance. A relationship between largest singular value of a block matrix and its block norm matrix is obtained. Numerical examples are given to demonstrate the usefulness of their results.
Hou-Biao Li   +3 more
openaire   +2 more sources

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