Results 21 to 30 of about 58,492 (258)

A family of 512 reverse order laws for generalized inverses of a matrix product: A review

open access: yesHeliyon, 2020
Reverse order laws for generalized inverses of matrix products are a classic object of study in the theory of generalized inverses. One of the well-known reverse order laws for a matrix product AB is (AB)(i,…,j)=B(s2,…,t2)A(s1,…,t1), where (⋅)(i,…,j ...
Yongge Tian
doaj   +1 more source

Mechanical characteristics of mining coal in reverse fault area

open access: yesMeikuang Anquan, 2022
In order to study the mechanical characteristics of the coal body in the area affected by the reverse fault under the mining path, taking 1503 working face of a mine as the research object, the stress analysis model of the coal body in the area affected
ZHOU Rui
doaj   +1 more source

Reverse-order law for the Moore–Penrose inverses of tensors [PDF]

open access: yesLinear and Multilinear Algebra, 2018
Reverse order law for the Moore-Penrose inverses of tensors are useful in the field of multilinear algebra. In this paper, we first prove some more identities involving the Moore-Penrose inverse of tensors. We then obtain a few necessary and sufficient conditions for the reverse order law for the Moore-Penrose inverse of tensors via the Einstein ...
Krushnachandra Panigrahy   +2 more
openaire   +2 more sources

The principle of Ma Yozman in Iranian Civil Law: a Comparative Study [PDF]

open access: yesپژوهش تطبیقی حقوق اسلام و غرب, 2015
The Ma Yozman principle (ما یضمن) is one very famous principle in the Islamic jurisprudence. Though it does not have any grounding in Islamic traditions, it has been widely established as a principle in Islamic traditions and some other principles taken ...
Hamzh Asfandiyari, Mahsa Madani
doaj   +1 more source

Equalities and inequalities for ranks of products of generalized inverses of two matrices and their applications

open access: yesJournal of Inequalities and Applications, 2016
A complex matrix X is called an { i , … , j } $\{i,\ldots, j\}$ -inverse of the complex matrix A, denoted by A ( i , … , j ) $A^{(i,\ldots, j)}$ , if it satisfies the ith, …, jth equations of the four matrix equations (i) A X A = A $AXA = A$ , (ii) X A X
Yongge Tian
doaj   +1 more source

African Legal Instruments as Regional Tools of Harmonization of International Environmental Law

open access: yesPrzegląd Prawniczy Uniwersytetu im. Adama Mickiewicza, 2022
Environmental degradation in the world in general, and in Africa in particular, is occurring on a scale of increasing concern. The challenge for public policy is to change the relationship between people and their environment in order to reverse this ...
Boubacar Sidi Diallo
doaj   +1 more source

Proposal for processes map of post-consumption reverse logistics under the perspective of the national solid waste policy

open access: yesGEPROS: Gestão da Produção, Operações e Sistemas, 2017
The National Policy on Solid Waste (NPSW) points to the Reverse Logistics (RL) as an instrument that enables actions and strategies that allow adequate management of Urban Solid Waste (USW) according to their guidelines.
Emmily Caroline Cabral da Fonseca   +4 more
doaj   +1 more source

What Does it Mean to Have a Right?

open access: yesIntergenerational Justice Review, 2009
This contribution offers an introduction into the language of rights and the role rights play in ethics and law, with special reference to the rights of children.
Dieter Birnbacher
doaj   +3 more sources

Further Results on the Reverse Order Law for {1,3}-Inverse and {1,4}-Inverse of a Matrix Product

open access: yesJournal of Inequalities and Applications, 2010
Both Djordjević (2007) and Takane et al. (2007) have studied the equivalent conditions for B{1,3}A{1,3}⊆(AB){1,3} and B{1,4}A{1,4}⊆(AB){1,4}.
Deqiang Liu, Hu Yang
doaj   +1 more source

The Expression of the Drazin Inverse with Rank Constraints

open access: yesJournal of Applied Mathematics, 2012
By using the matrix decomposition and the reverse order law, we provide some new expressions of the Drazin inverse for any 2×2 block matrix with rank constraints.
Linlin Zhao
doaj   +1 more source

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