Results 41 to 50 of about 581,282 (341)
Relative singularity categories and singular equivalences [PDF]
Let $R$ be a right notherian ring. We introduce the concept of relative singularity category $ _{\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 $ _{\mathcal{X}}(R)$ is triangle equivalent to a subcategory of the ...
openaire +2 more sources
Generalized teleparallel cosmology and initial singularity crossing [PDF]
We present a class of cosmological solutions for a generalized teleparallel gravity with f(T)=T+α̃ (−T)n, where α̃ is some parameter and n is an integer or half-integer.
A. Awad, G. Nashed
semanticscholar +1 more source
Digitalization of the Economy: a Challenge to Higher Education and Ways to Overcome
Purpose: the purpose of this article is to study the challenges of higher education in the digitalization of the economy and ways to overcome them. Achieving the goal is provided by identifying the system attributes of the digital economy, the gaps ...
E. N. Sirota
doaj +1 more source
En este artículo pretendemos mostrar que le conjunto de las economías singulares, si bien pequeño desde el punto de vista de la topología y/o desde el punto de vista de la teoría de la medida, tiene importantes efectos en el desarrollo de los regímenes económicos.
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5 pages, 5 figures.
Raphael Bousso, Arvin Shahbazi-Moghaddam
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Kinematics and Singularity Analysis of an Underwater Electric Manipulator
An underwater electric manipulator is a key operational tool for unmanned underwater vehicles. The control of this manipulator demands kinematic models, but for arms of different structures, these models differ.
HUANG Zhong, LIU Kean
doaj
ABSTRACT The pediatric hematology‐oncology fellowship training curriculum has not substantially changed since its inception. The first year of training is clinically focused, and the second and third years are devoted to scholarship. However, this current structure leaves many fellows less competitive in the current job market, resulting in ...
Scott C. Borinstein +3 more
wiley +1 more source
We investigate the impact of a country’s population happiness level and happiness inequality on the level of entrepreneurship engagement pursued by individual entrepreneurs in that country.
Fan Jia, André van Stel, Ying Zhang
doaj +1 more source
Singularity-constrained octahedral fields for hexahedral meshing
Despite high practical demand, algorithmic hexahedral meshing with guarantees on robustness and quality remains unsolved. A promising direction follows the idea of integer-grid maps, which pull back the Cartesian hexahedral grid formed by integer ...
Heng Liu +4 more
semanticscholar +1 more source
32 pages; 2 figures; to appear in Geometry & ...
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